Dilepton production in heavy-ion collisions at intermediate energies

Physical Review C - Nuclear Physics

Volumn 68, Issue 1, 2003, Pages 149041-1490422

  Shekhter, K ^a   Fuchs, C ^a   Faessler, Amand ^a   Krivoruchenko, M ^a,b   Martemyanov, B ^a,b  

^a UNIVERSITY OF TÜBINGEN   (Germany)

^b INSTITUTE FOR THEORETICAL AND EXPERIMENTAL PHYSICS   (Russian Federation)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 10044231991     PISSN: 05562813     EISSN: 1089490X     Source Type: Journal    
DOI: 10.1103/PhysRevC.68.014904     Document Type: Article

References (92)

1. G.E. Brown and M. Rho, Phys. Rev. Lett. 66, 2720 (1991); Phys. Rep. 269, 333 (1996).
2. G.E. Brown and M. Rho, Phys. Rev. Lett. 66, 2720 (1991); Phys. Rep. 269, 333 (1996).
3. T. Hatsuda and S.H. Lee, Phys. Rev. C 46, R34 (1992); Y. Koike, ibid. 51, 1488 (1995); T. Hatsuda, S.H. Lee, and H. Shiomi, ibid. 52, 3364 (1992); S. Leupold, ibid. 64, 015202 (2001); S. Zschoke, O.P. Pavlenko, and B. Kämpfer, Eur. Phys. J. A 15, 529 (2002).
4. T. Hatsuda and S.H. Lee, Phys. Rev. C 46, R34 (1992); Y. Koike, ibid. 51, 1488 (1995); T. Hatsuda, S.H. Lee, and H. Shiomi, ibid. 52, 3364 (1992); S. Leupold, ibid. 64, 015202 (2001); S. Zschoke, O.P. Pavlenko, and B. Kämpfer, Eur. Phys. J. A 15, 529 (2002).
5. T. Hatsuda and S.H. Lee, Phys. Rev. C 46, R34 (1992); Y. Koike, ibid. 51, 1488 (1995); T. Hatsuda, S.H. Lee, and H. Shiomi, ibid. 52, 3364 (1992); S. Leupold, ibid. 64, 015202 (2001); S. Zschoke, O.P. Pavlenko, and B. Kämpfer, Eur. Phys. J. A 15, 529 (2002).
6. T. Hatsuda and S.H. Lee, Phys. Rev. C 46, R34 (1992); Y. Koike, ibid. 51, 1488 (1995); T. Hatsuda, S.H. Lee, and H. Shiomi, ibid. 52, 3364 (1992); S. Leupold, ibid. 64, 015202 (2001); S. Zschoke, O.P. Pavlenko, and B. Kämpfer, Eur. Phys. J. A 15, 529 (2002).
7. T. Hatsuda and S.H. Lee, Phys. Rev. C 46, R34 (1992); Y. Koike, ibid. 51, 1488 (1995); T. Hatsuda, S.H. Lee, and H. Shiomi, ibid. 52, 3364 (1992); S. Leupold, ibid. 64, 015202 (2001); S. Zschoke, O.P. Pavlenko, and B. Kämpfer, Eur. Phys. J. A 15, 529 (2002).
8. A. Bhattacharyya, S.K. Ghosh, and S.C. Phatak, Phys. Rev. C 60, 044903 (1999).
9. F. Klingl, N. Kaiser, and W. Weise, Nucl. Phys. A624, 527 (1997); F. Klingl and W. Weise, Eur. Phys. J. A 4, 225 (1999).
10. F. Klingl, N. Kaiser, and W. Weise, Nucl. Phys. A624, 527 (1997); F. Klingl and W. Weise, Eur. Phys. J. A 4, 225 (1999).
11. V.L. Eletsky and B.L. Ioffe, Phys. Rev. Lett. 78, 1010 (1997).
12. V.L. Eletsky, M. Belkasem, P.J. Ellis, and J.I. Kapusta, Phys. Rev. C 64, 035202 (2001).
13. L.A. Kondratyuk et al., Phys. Rev. C 58, 1078 (1998).
14. G. Agakichiev et al., Phys. Rev. Lett. 75, 1272 (1995); A. Drees, Nucl. Phys. A610, 536c (1996).
15. G. Agakichiev et al., Phys. Rev. Lett. 75, 1272 (1995); A. Drees, Nucl. Phys. A610, 536c (1996).
16. M. Masera, Nucl. Phys. A590, 93c (1995).
17. W. Cassing, W. Ehehalt, and C.M. Ko, Phys. Lett. B 363, 35 (1995); G.Q. Li, C.M. Ko, and G.E. Brown, Nucl. Phys. A606, 568 (1996); C.M. Hung and E.V. Shuryak, Phys. Rev. C 56, 453 (1997).
18. W. Cassing, W. Ehehalt, and C.M. Ko, Phys. Lett. B 363, 35 (1995); G.Q. Li, C.M. Ko, and G.E. Brown, Nucl. Phys. A606, 568 (1996); C.M. Hung and E.V. Shuryak, Phys. Rev. C 56, 453 (1997).
19. W. Cassing, W. Ehehalt, and C.M. Ko, Phys. Lett. B 363, 35 (1995); G.Q. Li, C.M. Ko, and G.E. Brown, Nucl. Phys. A606, 568 (1996); C.M. Hung and E.V. Shuryak, Phys. Rev. C 56, 453 (1997).
20. M. Urban, M. Buballa, R. Rapp, and J. Wambach, Nucl. Phys. A641, 433 (1998); A673, 357 (2000); R. Rapp and J. Wambach, Adv. Nucl. Phys. 25, 1 (2000).
21. M. Urban, M. Buballa, R. Rapp, and J. Wambach, Nucl. Phys. A641, 433 (1998); A673, 357 (2000); R. Rapp and J. Wambach, Adv. Nucl. Phys. 25, 1 (2000).
22. M. Urban, M. Buballa, R. Rapp, and J. Wambach, Nucl. Phys. A641, 433 (1998); A673, 357 (2000); R. Rapp and J. Wambach, Adv. Nucl. Phys. 25, 1 (2000).
23. E.L. Bratkovskaya, W. Gassing, R. Rapp, and J. Wambach, Nucl. Phys. A634, 168 (1998).
24. R. Schneider and W. Weise, Eur. Phys. J. A 9, 357 (2000).
25. R.J. Porter et al., DLS Collaboration, Phys. Rev. Lett. 79, 1229 (1997).
26. C. Ernst, S.A. Bass, M. Belkacem, H. Stocker, and W. Greiner, Phys. Rev. C 58, 447 (1998).
27. E.L. Bratkovskaya and C.M. Ko, Phys. Lett. B 445, 265 (1999).
28. T. Inoue and E. Oset, Nucl. Phys. A710, 354 (2002).
29. K. Ozawa et al., Phys. Rev. Lett. 86, 5019 (2001).
30. E.L. Bratkovskaya, Phys. Lett. B 529, 26 (2002).
31. A. Faessler, C. Fuchs, and M.I. Krivoruchenko, Phys. Rev. C 61, 035206 (2000).
32. A. Faessler, C. Fuchs, M.I. Krivoruchenko, and B.V. Martemianov, J. Phys. G 29, 603 (2003).
33. C. Song and V. Koch, Phys. Rev. C 54, 1903 (1995).
34. W. Gassing, E.L. Bratkovskaya, M. Effenberger, and U. Mosel, Nucl. Phys. A653, 301 (1999).
35. B. Friman and H.J. Pirner, Nucl. Phys. A617, 496 (1997).
36. M. Post and U. Mosel, Nucl. Phys. A688, 808 (2001).
37. A.I. Titov and B. Kämpfer, Eur. Phys. J. A 12, 217 (2001).
38. M. Zetenyi and Gy. Wolf, nucl-th/0202047.
39. E.L. Bratkovskaya, W. Gassing, and U. Mosel, Nucl. Phys. A686, 568 (2001).
40. E.L. Bratkovskaya, Nucl. Phys. A696, 761 (2001); M. Effenberger, E.L. Bratkovskaya, W. Gassing, and U. Mosel, Phys. Rev. C 60, 027601 (1999).
41. E.L. Bratkovskaya, Nucl. Phys. A696, 761 (2001); M. Effenberger, E.L. Bratkovskaya, W. Gassing, and U. Mosel, Phys. Rev. C 60, 027601 (1999).
42. M.F.M. Lutz, B. Friman, and M. Soyeur, Nucl. Phys. A713, 97 (2003).
43. G. Penner, and U. Mosel, Phys. Rev. C 66, 055211 (2002); 66, 055212 (2002).
44. G. Penner, and U. Mosel, Phys. Rev. C 66, 055211 (2002); 66, 055212 (2002).
45. M.I. Krivoruchenko and Amand Faessler, Phys. Rev. D 65, 017502 (2002).
46. M.I. Krivoruchenko, B.V. Martemyanov, A. Faessler, and C. Fuchs, Ann. Phys. (N.Y.) 296, 299 (2002).
47. C. Fuchs, M.I. Krivoruchenko, H. Yadav, A. Faessler, B.V. Martemyanov, and K. Shekther, Phys. Rev. C 67, 025202 (2003).
48. J. Aichelin, Phys. Rep. 202, 233 (1991).
49. V.S. Uma Maheswari, C. Fuchs, Amand Faessler, L. Sehn, D. Kosov, and Z. Wang, Nucl. Phys. A628, 669 (1998).
50. N. Blanchi et al., Phys. Lett. B 309, 5 (1993); 325, 333 (1994).
51. N. Blanchi et al., Phys. Lett. B 309, 5 (1993); 325, 333 (1994).
52. L.A. Kondratyuk, M.I. Krivoruchenko, N. Bianchi, E.D. Sanctis, and V. Muccifora, Nucl. Phys. A579, 453 (1994).
53. CMD-2 Collaboration, Phys. Lett. B 501, 191 (2001); 503, 237 (2001).
54. CMD-2 Collaboration, Phys. Lett. B 501, 191 (2001); 503, 237 (2001).
55. A.I. Vainstein and V.I. Zakharov, Phys. Lett. 72B, 368 (1978).
56. L.G. Landsberg, Phys. Rep. 128, 301 (1985).
57. G. Hohler, E. Pietarinen, I. Sabba Stefanescu, F. Borkowski, G.G. Simon, V.H. Walther, and R.D. Wendling, Nucl. Phys. B114, 505 (1976).
58. P. Mergell, U.G. Meissner, and D. Drechsel, Nucl. Phys. A596, 367 (1996).
59. A. Sibirtsev, Nucl. Phys. A604, 455 (1996).
60. A. Sibirtsev, W. Gassing, and U. Mosel, Z. Phys. A 358, 357 (1997).
61. S. Teis, W. Gassing, M. Effenberger, A. Hombach, U. Mosel, and Gy. Wolf, Z. Phys. A 356, 421 (1997).
62. S.A. Bass et al., Prog. Part. Nucl. Phys. 41, 225 (1998).
63. Particle Data Group, Phys. Rev. D 54, 1 (1996).
64. F. Hibou et al., Phys. Rev. Lett. 83, 492 (1999).
65. COSY-TOF Collaboration, Phys. Lett. B 522, 16 (2001).
66. F. Balestra et al., DISTO Collaboration, Phys. Rev. C 63, 024004 (2001).
67. V. Flaminio et al., CERN-HERA Report No. 84-10, 1984.
68. A. Berthon, J. Mas, J.L. Narjoux, and P. Ladron de Guevara, Nucl. Phys. B81, 431 (1974); Y. Williamson et al., Phys. Rev. Lett. 29, 1353 (1972).
69. A. Berthon, J. Mas, J.L. Narjoux, and P. Ladron de Guevara, Nucl. Phys. B81, 431 (1974); Y. Williamson et al., Phys. Rev. Lett. 29, 1353 (1972).
70. W.K. Wilson et al., DLS Collaboration, Phys. Rev. C 57, 1865 (1998).
71. A. Bussiere et al., Nucl. Phys. A365, 349 (1981).
72. H. Calen et al., Phys. Rev. Lett. 79, 2642 (1997); Phys. Rev. C 58, 2667 (1998).
73. H. Calen et al., Phys. Rev. Lett. 79, 2642 (1997); Phys. Rev. C 58, 2667 (1998).
74. E. Chiavassa et al., Phys. Lett. B 337, 192 (1994).
75. F. Hibou et al., Phys. Lett. B 438, 41 (1998).
76. J. Smyrski et al., COSY-11 Collaboration, Phys. Lett. B 474, 182 (2000).
77. H. Calen et al., Phys. Lett. B 366, 39 (1996).
78. E. Chiavassa et al., Phys. Lett. B 322, 270 (1994).
79. A. Bergdolt et al., Phys. Rev. D 48, 2969 (1993).
80. V.A. Matveev, R.M. Muradian, and A.N. Tavkhelidze, Lett. Nuovo Cimento 7, 719 (1973); S.J. Brodsky and G.R. Farrar, Phys. Rev. Lett. 31, 1153 (1973); Phys. Rev. D 11, 1309 (1975).
81. V.A. Matveev, R.M. Muradian, and A.N. Tavkhelidze, Lett. Nuovo Cimento 7, 719 (1973); S.J. Brodsky and G.R. Farrar, Phys. Rev. Lett. 31, 1153 (1973); Phys. Rev. D 11, 1309 (1975).
82. V.A. Matveev, R.M. Muradian, and A.N. Tavkhelidze, Lett. Nuovo Cimento 7, 719 (1973); S.J. Brodsky and G.R. Farrar, Phys. Rev. Lett. 31, 1153 (1973); Phys. Rev. D 11, 1309 (1975).
83. S. Huber and J. Aichelin, Nucl. Phys. A573, 587 (1994).
84. P. Danielewicz and S. Pratt, Phys. Rev. C 53, 249 (1966).
85. J. Aichelin and C. Hartnack, in Proceedings to the 25th International Workshop on Gross Properties of Nuclei and Nuclear Excitations, Hirschegg, 1997, edited by H. Feldmeier et al
86. A.B. Larionov, M. Effenberger, S. Leupold, and U. Mosel, Phys. Rev. C 66, 054604 (2002).
87. C. Sturm et al., KaoS Collaboration, Phys. Rev. Lett. 86, 39 (2001).
88. G. Faeldt and C. Wilkin, Nucl. Phys. A587, 769 (1995).
89. C. Fuchs, Amand Faessler, E. Zabrodin, and Y.M. Zheng, Phys. Rev Lett. 86, 1974 (2001).
90. E.L. Bratkovskaya and W. Cassing, Phys. Rep. 308, 65 (1999).
91. J. Friese, HADES Collaboration, Nucl. Phys. A654, 1017c (1999).
92. As mentioned in the text, we used an averaging procedure with constant bin width √2ρ=35 MeV. If one applies a mass dependent smearing function as suggested by the DLS Collaboration, the contribution from the ω-peak can further be flattened. However, different smearing procedures do not affect the total dilepton yield and thus the problem of overestimation of the DLS spectra in the vicinity of the ω-peak remains. The conclusions on strong collision broadenings of the ρ- and ω-mesons which are required to reduce that yield are independent from the actual averaging procedure applied.