Analytical calculation of two-loop feynman diagrams

Acta Physica Polonica B

Volumn 35, Issue 11, 2004, Pages 2587-2600

  Bonciani, R ^a  

^a UNIVERSITY OF FREIBURG   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

ALGEBRA; ALGORITHMS; DIFFERENTIAL EQUATIONS; HARMONIC ANALYSIS; MATHEMATICAL OPERATORS; NUMERICAL METHODS; PERTURBATION TECHNIQUES; THEOREM PROVING;

LAPORTA ALGORITHM; RUNGE-KUTTA METHOD; TRANSCENDENTAL FUNCTIONS; TWO-LOOP FEYNMAN DIAGRAMS;

INTEGRAL EQUATIONS;

EID: 9244256737     PISSN: 05874254     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (121)

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28. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
29. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
30. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
31. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
32. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
33. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
34. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
35. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
36. D.J. Broadhurst, Z. Phys. C47, 115 (1990); A.I. Davydychev, J.B. Tausk, Nucl. Phys. B397, 123 (1993); D.J. Broadhurst, J. Fleischer, O.V. Tarasov, Z. Phys. C60, 287 (1993); A.I. Davydychev, V.A. Smirnov, J.B. Tausk, Nucl. Phys. B410, 325 (1993); R. Scharf, J.B. Tausk, Nucl. Phys. B412, 523 (1994); A.I. Davydychev, J.B. Tausk, hep-ph/9504432; A.I. Davydychev, J.B. Tausk, Nucl. Phys. B465, 507 (1996); T. van Ritbergen, J.A.M. Vermaseren, S.A. Larin, Phys. Lett. B400, 379 (1997); T. van Ritbergen, R.G. Stuart, Phys. Rev. Lett. 82,488 (1999); J. Fleischer, M.Y. Kalmykov, A.V. Kotikov, Phys. Lett. B462, 169 (1999); K. Melnikov, T. van Ritbergen, Nucl. Phys. B591, 515 (2000); A.I. Davydychev, M.Y. Kalmykov, Nucl. Phys. B605, 266 (2001); M. Argeri, P. Mastrolia, E. Remiddi, Nucl. Phys. B631, 388 (2002); M. Awramik, M. Czakon, A. Onishchenko, O. Veretin, Phys. Rev. D68, 053004 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B657, 397 (2003); M. Awramik, M. Czakon, Phys. Lett. B568, 48 (2003); S. Laporta, P. Mastrolia, E. Remiddi, Nucl. Phys. B688, 165 (2004); S. Laporta, E. Remiddi, hep-ph/0406160.
37. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
38. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
39. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
40. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
41. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
42. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
43. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
44. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
45. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
46. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
47. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
48. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
49. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
50. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
51. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
52. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
53. N.I. Usyukina, A.I. Davydychev, Phys. Atom. Nucl. 56, 1553 (1993), [Yad. Fiz. 56N11, 172 (1993)]; N.I. Usyukina, A.I. Davydychev, Phys. Lett. B332, 159 (1994); N.I. Usyukina, A.I. Davydychev, Phys. Lett. B348, 503 (1995); J. Fleischer, V.A. Smirnov, A. Frink, J.G. Korner, D. Kreimer, K. Schilcher, J.B. Tausk, Eur. Phys. J. C2, 747 (1998); J. Fleischer, A.V. Kotikov, O.L. Veretin, Phys. Lett. B417, 163 (1998); J. Fleischer, M. Tentyukov, hep-ph/9802244; R.V. Harlander, Phys. Lett. B492, 74 (2000); A.I. Davydychev, V.A. Smirnov, Nucl. Instrum. Methods A502, 621 (2003); P. Mastrolia, E. Remiddi, Nucl. Phys. B664, 341 (2003); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B676, 399 (2004); R. Bonciani, P. Mastrolia, E. Remiddi, Nucl. Phys. B690, 138 (2004); J. Fleischer, O.V. Tarasov, V.O. Tarasov, Phys. Lett. B584, 294 (2004); U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B595, 432 (2004); W. Bernreuther, R. Bonciani, T. Gehrmann, R. Heinesch, T. Leineweber, P. Mastrolia, E. Remiddi, hep-ph/0406046; U. Aglietti, R. Bonciani, G. Degrassi, A. Vicini, Phys. Lett. B600, 57 (2004); M. Awramik, M. Czakon, A. Freitas, G. Weiglein, hep-ph/0407317.
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60. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
61. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl.
62. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
63. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
64. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
65. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
66. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
67. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
68. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
69. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
70. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
71. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
72. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
73. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
74. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
75. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
76. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
77. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
78. N.I. Usyukina, A.I. Davydychev, Phys. Lett. B298, 363 (1993); V. A. Smirnov, Phys. Lett. B460, 397 (1999); V.A. Smirnov, O.L. Veretin, Nucl. Phys. B566, 469 (2000); J.B. Tausk, Phys. Lett. B469, 225 (1999); C. Anastasiou, E.W.N. Glover, C. Oleari, Nucl. Phys. B575, 416 (2000), [Erratumibid. B585, 763 (2000)]; Z. Bern, L.J. Dixon, D.A. Kosower, J. High Energy Phys. 0001, 027 (2000); C. Anastasiou, T. Gehrmann, C. Oleari, E. Remiddi, J. B. Tausk, Nucl. Phys. B580, 577 (2000); V. A. Smirnov, Phys. Lett. B491, 130 (2000); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 248 (2001); Z. Bern, L.J. Dixon, A. Ghinculov, Phys. Rev. D63, 053007 (2001); C. Anastasiou, E. W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 318 (2001); V. A. Smirnov, Phys. Lett. B500, 330 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B601, 341 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Phys. Lett. B506, 59 (2001); T. Gehrmann, E. Remiddi, Nucl. Phys. B601, 287 (2001); C. Anastasiou, E.W.N. Glover, C. Oleari, M.E. Tejeda-Yeomans, Nucl. Phys. B 605 (2001) 486 E. W. N. Glover, C. Oleari, M. E. Tejeda-Yeomans, Nucl. Phys. B605, 467 (2001); E.W.N. Glover, M.E. Tejeda-Yeomans, J. High Energy Phys. 0105, 010 (2001); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0109, 037 (2001); Z. Bern, A. De Freitas, L. J. Dixon, A. Ghinculov, H. L. Wong, J. High Energy Phys. 0111, 031 (2001); V.A. Smirnov, Phys. Lett. B524, 129 (2002); L. W. Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B627, 107 (2002); Z. Bern, A. De Freitas, L.J. Dixon, J. High Energy Phys. 0203, 018 (2002); L.W.Garland, T. Gehrmann, E.W.N. Glover, A. Koukoutsakis, E. Remiddi, Nucl. Phys. B642, 227 (2002); T. Gehrmann, E. Remiddi, Nucl. Phys. B640, 379 (2002); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, Nucl. Phys. B681, 261 (2004); R. Bonciani, A. Ferroglia, P. Mastrolia, E. Remiddi, J.J. van der Bij, hep-ph/0405275; G. Heinrich, V.A. Smirnov, Phys. Lett. B598, 55 (2004); M. Czakon, J. Gluza, T. Riemann, hep-ph/0406203.
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