A measurement of the Q2, W and t dependences of deeply virtual Compton scattering at HERA

Journal of High Energy Physics

Volumn 2009, Issue 5, 2009, Pages

  Chekanov, S ^a   Derrick, M ^a   Magill, S ^a   Musgrave, B ^a   Nicholass, D ^a,n   Repond, J ^a   Yoshida, R ^a   Mattingly, M C K ^b   Antonioli, P ^c   Bari, G ^c   Bellagamba, L ^c   Boscherini, D ^c   Bruni, A ^c   Bruni, G ^c   Cindolo, F ^c   Corradi, M ^c   Iacobucci, G ^c   Margotti, A ^c   Nania, R ^c   Polini, A ^c   Antonelli, S ^c   Basile, M ^c   Bindi, M ^c   Cifarelli, L ^c   Contin, A ^c   De Pasquale, S ^c,ba   Sartorelli, G ^c   Zichichi, A ^c   Bartsch, D ^d   Brock, I ^d   Hartmann, H ^d   Hilger, E ^d   Jakob, H P ^d   Jungst M ^d   Nuncio Quiroz, A E ^d   Paul, E ^d   Samson, U ^d   Schonberg V ^d   Shehzadi, R ^d   Wlasenko, M ^d   Brook, N H ^e   Heath, G P ^e   Morris, J D ^e   Kaur, M ^f   Kaur, P ^f,bb   Singh, I ^f,bb   Capua, M ^g   Fazio, S ^g   Mastroberardino, A ^g   Schioppa, M ^g   Susinno, G ^g   Tassi, E ^g   Kim, J Y ^h   Ibrahim, Z A ⁱ   Idris, F Mohamad ⁱ   Kamaluddin, B ⁱ   Wan Abdullah, W A T ⁱ   Ning, Y ^j   Ren, Z ^j   Sciulli, F ^j   Chwastowski, J ^k   Eskreys, A ^k   Figiel, J ^k   Galas, A ^k   Olkiewicz, K ^k   Pawlik, B ^k   Stopa, P ^k   Zawiejski, L ^k   Adamczyk, L ^l   Bold T ^l   Grabowska Bold I ^l   Kisielewska, D ^l   Lukasik J ^l,bc   Przybycien M ^l   Suszycki, L ^l   Kotanski A ^m   Slominski W ^m   Behnke, O ⁿ   Behrens, U ⁿ   Blohm, C ⁿ   Bonato, A ⁿ   Borras, K ⁿ   Bot, D ⁿ   Ciesielski, R ⁿ   Coppola, N ⁿ   Fang, S ⁿ   Fourletova, J ^d,n   Geiser, A ⁿ   Gottlicher P ⁿ   Grebenyuk, J ⁿ   Gregor, I ⁿ   Haas, T ⁿ   Hain, W ⁿ   Huttmann A ⁿ   Januschek, F ⁿ   Kahle, B ⁿ   Katkov, I I ^n,ad   Klein, U ^n,bd   Kotz U ⁿ   Kowalski, H ⁿ   Lisovyi, M ⁿ   Lobodzinska, E ⁿ   Lohr B ⁿ   Mankel, R ⁿ   Melzer Pellmann, I A ⁿ   Miglioranzi, S ^n,be   Montanari, A ⁿ   Namsoo, T ⁿ   Notz, D ⁿ   Parenti, A ⁿ   Rinaldi, L ^n,bf   Roloff, P ⁿ   Rubinsky, I ⁿ   Schneekloth, U ⁿ   Spiridonov, A ^n,bg   Szuba, D ^n,bh   Szuba, J ^l,n   Theedt, T ⁿ   Ukleja, J ⁿ   Wolf, G ⁿ   Wrona, K ⁿ   Molina, A G Yagües ⁿ   Youngman, C ⁿ   Zeuner, W ⁿ   Drugakov, V ⁿ   Lohmann, W ⁿ   Schlenstedt, S ⁿ   Barbagli, G ^o   Gallo, E ^o   Pelfer, P G ^o   Bamberger, A ^p   Dobur, D ^p   Karstens, F ^p   Vlasov, N N ^p   Bussey, P J ^q   Doyle, A T ^q   Dunne, W ^q   Forrest, M ^q   Rosin, M ^q   Saxon, D H ^q   Skillicorn, I O ^q   Gialas, I ^r   Papageorgiu, K ^r   Holm, U ^s   Klanner, R ^s   Lohrmann, E ^s   Perrey, H ^s   Schleper, P ^s   Schorner Sadenius T ^s   Sztuk, J ^s   Stadie, H ^s   Turcato, M ^s   Foudas, C ^t   Fry, C ^t   Long, K R ^t   Tapper, A D ^t   Matsumoto, T ^u   Nagano, K ^u   Tokushuku, K ^u,bi   Yamada, S ^u   Yamazaki, Y ^u,ap   Barakbaev, A N ^v   Boos, E G ^v   Pokrovskiy, N S ^v   Zhautykov, B O ^v   Aushev, V ^w   Bachynska, O ^w   Borodin, M ^w   Kadenko, I ^w   Kozulia, A ^w   Libov, V ^w   Lontkovskyi, D ^w   Makarenko, I ^w   Sorokin, Iu ^w   Verbytskyi, A ^w   Volynets, O ^w   Son, D ^x   De Favereau, J ^y   Piotrzkowski, K ^y   Barreiro, F ^z   Glasman, C ^z   Jimenez, M ^z   Labarga, L ^z   Del Peso, J ^z   Ron, E ^z   Soares, M ^z   Terron J ^z   Uribe Estrada, C ^z   Corriveau, F ^aa   Liu, C ^aa   Schwartz, J ^aa   Walsh, R ^aa   Zhou, C ^aa   Tsurugai, T ^ab   Antonov, A ^ac   Dolgoshein, B A ^ac   Gladkov, D ^ac   Sosnovtsev, V ^ac   Stifutkin, A ^ac   Suchkov, S ^ac   Dementiev, R K ^ad   Ermolov, P F ^ad   Gladilin, L K ^ad   Golubkov, Yu A ^ad   Khein, L A ^ad   Korzhavina, I A ^ad   Kuzmin, V A ^ad   Levchenko, B B ^ad   Lukina, O Yu ^ad   Proskuryakov, A S ^ad   Shcheglova, L M ^ad   Zotkin, D S ^ad   Abt, I ^ae   Caldwell, A ^ae   Kollar, D ^ae   Reisert, B ^ae   Schmidke, W B ^ae   Grigorescu, G ^af   Keramidas, A ^af   Koffeman, E ^af   Kooijman, P ^af   Pellegrino, A ^af   Tiecke, H ^af   Vazquez M ^af,be   Wiggers, L ^af   Brummer N ^ag   Bylsma, B ^ag   Durkin, L S ^ag   Lee, A ^ag   Ling, T Y ^ag   Allfrey, P D ^ah   Bell, M A ^ah   Cooper Sarkar, A M ^ah   Devenish, R C E ^ah   Ferrando, J ^ah   Foster, B ^ah   Gwenlan, C ^ah   Horton, K ^ah   Oliver, K ^ah   Robertson, A ^ah   Walczak, R ^ah   Bertolin, A ^ai   Dal Corso, F ^ai   Dusini, S ^ai   Longhin, A ^ai   Stanco, L ^ai   Bellan, P ^ai   Brugnera, R ^ai   Carlin, R ^ai   Garfagnini, A ^ai   Limentani, S ^ai   Oh, B Y ^aj   Raval, A ^aj   Whitmore, J J ^aj   Iga, Y ^ak   D'Agostini, G ^al   Marini, G ^al   Nigro, A ^al   Cole, J E ^am,bj   Hart, J C ^am   Abramowicz, H ^an,bk   Ingbir, R ^an   Kananov, S ^an   Levy, A ^an   Stern, A ^an   Kuze, M ^ao   Maeda, J ^ao   Hori, R ^ap   Kagawa, S ^ap,bl   Okazaki, N ^ap   Shimizu, S ^ap   Tawara, T ^ap   Hamatsu, R ^aq   Kaji, H ^aq,bm   Kitamura, S ^aq   Ota, O ^aq,bn   Ri, Y D ^aq   Costa, M ^ar   Ferrero, M I ^ar   Monaco, V ^ar   Sacchi, R ^ar   Sola, V ^ar   Solano, A ^ar   Arneodo, M ^as   Ruspa, M ^as   Fourletov, S ^d,at   Martin, J F ^at   Stewart, T P ^at   Boutle, S K ^au   Butterworth, J M ^au   Jones, T W ^au   Loizides, J H ^au   Wing, M ^s,au   Brzozowska, B ^av   Ciborowski, J ^av,bo   Grzelak, G ^av   Kulinski, P ^av   Luzniak P ^av   Malka, J ^av   Nowak, R J ^av   Pawlak, J M ^av   Perlanski, W ^av   Tymieniecka, T ^av,bp   Zarnecki, A F ^av   Adamus, M ^aw   Plucinski, P ^aw,bq   Ukleja, A ^aw   Eisenberg, Y ^ax   Hochman, D ^ax   Karshon, U ^ax   Brownson, E ^ay   Reeder, D D ^ay   Savin, A A ^ay   Smith, W H ^ay   Wolfe, H ^ay   Bhadra, S ^az   Catterall, C D ^az   Cui, Y ^az   Hartner, G ^az   Menary, S ^az   Noor, U ^az   Standage, J ^az   Whyte, J ^az   more..

^a ARGONNE NATIONAL LABORATORY   (United States)

^b ANDREWS UNIVERSITY   (United States)

^c INFN SEZIONE DI BOLOGNA   (Italy)

^d UNIVERSITY OF BONN   (Germany)

^e UNIVERSITY OF BRISTOL   (United Kingdom)

^f PANJAB UNIVERSITY   (India)

^g UNIVERSITY OF CALABRIA   (Italy)

^h Chonnam National University   (South Korea)

ⁱ UNIVERSITY OF MALAYA   (Malaysia)

^j Universiti Malaya ^*  (United States)

^k INSTITUTE OF NUCLEAR PHYSICS   (Poland)

^l AGH UNIVERSITY OF SCIENCE AND TECHNOLOGY   (Poland)

^m JAGIELLONIAN UNIVERSITY   (Poland)

ⁿ DESY   (Germany)

^o INFN SEZIONE DI FIRENZE   (Italy)

^p UNIVERSITY OF FREIBURG   (Germany)

^q UNIVERSITY OF GLASGOW   (United Kingdom)

^r UNIVERSITY OF THE AEGEAN   (Greece)

^s UNIVERSITY OF HAMBURG   (Germany)

^t IMPERIAL COLLEGE LONDON   (United Kingdom)

^u INSTITUTE OF PARTICLE AND NUCLEAR STUDIES   (Japan)

^v Ministry of Education and Science of the Republic of Kazakhstan   (Kazakhstan)

^w INSTITUTE FOR NUCLEAR RESEARCH   (Ukraine)

^x Kyungpook National University   (South Korea)

^y UNIVERSITÉ CATHOLIQUE DE LOUVAIN   (Belgium)

^z UNIVERSIDAD AUTÓNOMA DE MADRID   (Spain)

^aa MCGILL UNIVERSITY   (Canada)

^ab MEIJI GAKUIN UNIVERSITY   (Japan)

^ac NATIONAL RESEARCH NUCLEAR UNIVERSITY MEPHI   (Russian Federation)

^ad MOSCOW STATE UNIVERSITY   (Russian Federation)

^ae MAX PLANCK INSTITUT FÜR PHYSIK   (Germany)

^af UNIVERSITY OF AMSTERDAM   (Netherlands)

^ag OHIO STATE UNIVERSITY   (United States)

^ah UNIVERSITY OF OXFORD   (United Kingdom)

^ai SEZIONE DI PADOVA   (Italy)

^aj PENNSYLVANIA STATE UNIVERSITY   (United States)

^ak POLYTECHNIC UNIVERSITY   (Japan)

^al UNIVERSITÀ DI ROMA LA SAPIENZA   (Italy)

^am RUTHERFORD APPLETON LABORATORY   (United Kingdom)

^an TEL AVIV UNIVERSITY   (Israel)

^ao TOKYO INSTITUTE OF TECHNOLOGY   (Japan)

^ap UNIVERSITY OF TOKYO   (Japan)

^aq TOKYO METROPOLITAN UNIVERSITY   (Japan)

^ar UNIVERSITY OF TURIN   (Italy)

^as UNIVERSITY OF EASTERN PIEDMONT   (Italy)

^at UNIVERSITY OF TORONTO   (Canada)

^au UNIVERSITY COLLEGE LONDON   (United Kingdom)

^av UNIVERSITY OF WARSAW   (Poland)

^aw INSTITUTE OF NUCLEAR CHEMISTRY AND TECHNOLOGY   (Poland)

^ax WEIZMANN INSTITUTE OF SCIENCE   (Israel)

^ay Wisconsin Electric Machines and Power Electronics Consortium   (United States)

^az YORK UNIVERSITY   (Canada)

^ba UNIVERSITY OF SALERNO   (Italy)

^bb MAX PLANCK INSTITUTE   (Germany)

^bc INSTITUTE OF AVIATION   (Poland)

^bd UNIVERSITY OF LIVERPOOL   (United Kingdom)

^be CERN   (Switzerland)

^bf UNIVERSITY OF BOLOGNA   (Italy)

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

^bh INP   (Poland)

^bi Moscow State University ^*

^bj KOBE UNIVERSITY   (Japan)

^bk UNIVERSITY OF KANSAS   (United States)

^bl HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION KEK   (Japan)

^bm NAGOYA UNIVERSITY   (Japan)

^bn SunMelx Co Ltd   (Japan)

^bo UNIVERSITY OF LODZ   (Poland)

^bp SIEDLCE UNIVERSITY OF NATURAL SCIENCES AND HUMANITIES   (Poland)

^bq LUND UNIVERSITY   (Sweden)

more..

Author keywords

Lepton nucleon scattering

Indexed keywords

EID: 73349097155     PISSN: 11266708     EISSN: 10298479     Source Type: Journal    
DOI: 10.1088/1126-6708/2009/05/108     Document Type: Article

References (59)

1. M. Diehl, T. Gousset, B. Pire and J.P. Ralston, Testing the handbag contribution to exclusive virtual Compton scattering, Phys. Lett. B 411 (1997) 193 [hep-ph/9706344] [SPIRES].
2. M. Burkardt, Impact parameter space interpretation for generalized parton distributions, Int. J. Mod. Phys. A 18 (2003) 173 [hep-ph/0207047] [SPIRES].
3. M. Diehl, Generalized parton distributions in impact parameter space, Eur. Phys. J. C 25 (2002) 223, [hep-ph/0205208] [SPIRES].
4. M. Diehl, Generalized parton distributions in impact parameter space, Eur. Phys. J. [Erratum ibid. C 31 (2003) 277] [hep-ph/0205208] [SPIRES].
5. V. Guzey and T. Teckentrup, The dual parameterization of the proton generalized parton distribution functions H and E and description of the DVCS cross sections and asymmetries, Phys. Rev. D 74 (2006) 054027 [hep-ph/0607099] [SPIRES].
6. K. Kumericki, D. Mueller and K. Passek-Kumericki, Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond, Nucl. Phys. B 794 (2008) 244 [hep-ph/0703179] [SPIRES].
7. L.L. Frankfurt, A. Freund and M. Strikman, Deeply virtual Compton scattering at HERA: a probe of asymptotia, Phys. Lett. B 460 (1999) 417 [hep-ph/9806535] [SPIRES].
8. A.V. Belitsky, D. Müller and A. Kirchner, Theory of deeply virtual Compton scattering on the nucleon, Nucl. Phys. B 629 (2002) 323 [hep-ph/0112108] [SPIRES].
9. A. Freund and M.F. McDermott, A next-to-leading order analysis of deeply virtual Compton scattering, Phys. Rev. D 65 (2002) 091901 [hep-ph/0106124] [SPIRES].
10. ZEUS collaboration, J. Breitweg et al., Measurement of exclusive omega electroproduction at HERA, Phys. Lett. B 487 (2000) 273 [hep-ex/0006013] [SPIRES].
11. ZEUS collaboration, S. Chekanov et al., Exclusive electroproduction of ø mesons at HERA, Nucl. Phys. B 718 (2005) 2 [hep-ex/0504010] [SPIRES].
12. ZEUS collaboration, S. Chekanov et al., Exclusive electroproduction of J/ψ mesons at HERA, Nucl. Phys. B 695 (2004) 3 [hep-ex/0404008] [SPIRES].
13. ZEUS collaboration, J. Breitweg et al., Measurement of diffractive photoproduction of vector mesons at large momentum transfer at HERA, Eur. Phys. J. C 14 (2000) 213[hep-ex/9910038] [SPIRES].
14. H1 collaboration, C. Adloff et al., Measurement of elastic electroproduction of Φ mesons at HERA, Phys. Lett. B 483 (2000) 360 [hep-ex/0005010] [SPIRES].
15. 0 production in deep inelastic scattering at HERA, PMC Phys. A 1 (2007) 6 [arXiv:0708.1478] [SPIRES].
16. H1 collaboration, A. Aktas et al., Elastic J/ψ production at HERA, Eur. Phys. J. C 46 (2006) 585 [hep-ex/0510016] [SPIRES].
17. H1 collaboration, C. Adloff et al., Elastic electroproduction of ρ mesons at HERA, Eur. Phys. J. C 13 (2000) 371 [hep-ex/9902019] [SPIRES].
18. H1 collaboration, C. Adloff et al., Measurement of deeply virtual Compton scattering at HERA, Phys. Lett. B 517 (2001) 47 [hep-ex/0107005] [SPIRES].
19. ZEUS collaboration, S. Chekanov et al., Measurement of deeply virtual Compton scattering at HERA, Phys. Lett. B 573 (2003) 46 [hep-ex/0305028] [SPIRES].
20. H1 collaboration, A. Aktas et al., Measurement of deeply virtual Compton scattering at HERA, Eur. Phys. J. C 44 (2005) 1 [hep-ex/0505061] [SPIRES].
21. H1 collaboration, F.D. Aaron et al., Measurement of deeply virtual Compton scattering and its t-dependence at HERA, Phys. Lett. B 659 (2008) 796 [arXiv:0709.4114] [SPIRES].
22. 0 photoproduction at HERA using the ZEUS leading proton spectrometer, Z. Phys. C 73 (1997) 253 [hep-ex/9609003].[SPIRES].
23. ZEUS collaboration, S. Chekanov et al., Dissociation of virtual photons in events with a leading proton at HERA, Eur. Phys. J. C 38 (2004) 43 [hep-ex/0408009] [SPIRES].
24. ZEUS collaboration, U. Holm ed., The ZEUS detector, status report, unpublished, DESY, Germany (1993), available on http://www-zeus.desy.de/ bluebook/bluebook.html.
25. tot(γp) √ = 210GeV, Phys. Lett. B 293 (1992) 465 [SPIRES].
26. N. Harnew et al., Vertex triggering using time difference measurements in the ZEUS central tracking detector, Nucl. Instrum. Meth. A 279 (1989) 290 [SPIRES].
27. B. Foster et al., The performance of the ZEUS central tracking detector z-by-timing electronics in a transputer based data acquisition system, Nucl. Phys. Proc. Suppl. B 32 (1993) 181 [SPIRES].
28. ZEUS collaboration, B. Foster et al., The design and construction of the ZEUS central tracking detector, Nucl. Instrum. Meth. A 338 (1994) 254 [SPIRES].
29. M. Derrick et al., Design and construction of the ZEUS barrel calorimeter, Nucl. Instrum. Meth. A 309 (1991) 77.
30. ZEUS Calorimeter Group and ZEUS collaborations, A. Andresen et al., Construction and beam test of the ZEUS forward and rear calorimeter, Nucl. Inst. Meth. A 309 (1991) 101 [SPIRES].
31. A. Caldwell et al., Design and implementation of a high precision readout system for the ZEUS calorimeter, Nucl. Instrum. Meth. A 321 (1992) 356 [SPIRES].
32. ZEUS Barrel Calorimeter Group collaboration, A. Bernstein et al., Beam tests of the ZEUS barrel calorimeter, Nucl. Instrum. Meth. A 336 (1993) 23 [SPIRES].
33. ZEUS collaboration, A. Bamberger et al., The small angle rear tracking detector of ZEUS, Nucl. Instrum. Meth. A 401 (1997) 63 [SPIRES].
34. A. Dwurazny et al., Experimental study of electron-hadron separation in calorimeters using silicon diodes, Nucl. Instrum. Meth. A 277 (1989) 176 [SPIRES].
35. ZEUS FPC group collaboration, A. Bamberger et al., The ZEUS forward plug calorimeter with lead scintillator plates and WLS fiber readout, Nucl. Instrum. Meth. A 450 (2000) 235[hep-ex/9912045] [SPIRES].
36. ZEUS Luminosity Monitor Group collaboration, J. Andruszków et al., First measurement of HERA luminosity by ZEUS lumi monitor, preprint DESY-92-066, DESY, Germany (1992) [SPIRES].
37. ZEUS collaboration, M. Derrick et al., Measurement of total and partial photon proton cross-sections at 180GeV center-of-mass energy, Z. Phys. C 63 (1994) 391 [SPIRES].
38. ZEUS Luminosity Group collaboration, J. Andruszków et al., Luminosity measurement in the ZEUS experiment, Acta Phys. Pol. B 32 (2001) 2025 [SPIRES].
39. R. Brun et al., GEANT3, Technical Report CERN-DD/EE/84-1, CERN, Switzerland (1987)[SPIRES].
40. P.R.B. Saull, A Monte Carlo generator for deeply virtual Compton scattering at HERA, available on http://www-zeus.desy.de/physics/diff/pub/MC (1999).
41. L.L. Frankfurt, A. Freund and M. Strikman, Diffractive exclusive photoproduction in DIS at HERA, Phys. Rev. D 58 (1998) 114001 [Erratum ibid. D 59 (1999) 119901].[hep-ph/9710356] [SPIRES].
42. L.L. Frankfurt, A. Freund and M. Strikman, Diffractive exclusive photoproduction in DIS at HERA, Phys. Rev. [Erratum ibid. D 59 (1999) 119901].[hep-ph/9710356] [SPIRES].
43. tot(*p): an update, preprint DESY-97-251, DESY, Germany (1997) [hep-ph/9712415] [SPIRES].
44. T. Abe, GRAPE dilepton (version1.1): a generator for dilepton production in e p collisions, Comput. Phys. Commun. 136 (2001) 126 [hep-ph/0012029] [SPIRES].
45. MINAMI-TATEYA group collaboration, T. Ishikawa et al., GRACE manual: automatic generation of tree amplitudes in standard models: version 1.0, KEK Report KEK-92-19, Japan (1993) [SPIRES].
46. K. Muchorowski, Analysis of exclusive ρ0 production in deep inelastic ep scattering at 300GeV center-of-mass energy, Ph.D. Thesis, unpublished, Warsaw University, Warsaw Poland (1998).
47. H. Spiesberger, An event generator for ep interactions at HERA including radiative processes (version 4.6), (1996), available on http://www.desy.de/ ~hspiesb/heracles.html.
48. W.H. Smith, K. Tokushuku and L.W. Wiggers, The ZEUS trigger system, in Proceedings of Computing in High-Energy Physics (CHEP), Annecy France September 1992, C. Verkerk and W. Wojcik eds., CERN, Geneva Switzerland (1992), pg. 222 [DESY-92-150B] [SPIRES].
49. H. Abramowicz, A. Caldwell and R. Sinkus, Neural network based electron identification in the ZEUS calorimeter, Nucl. Instrum. Meth. A 365 (1995) 508 [hep-ex/9505004] [SPIRES].
50. R. Sinkus and T. Voss, Particle identification with neural networks using a rotational invariant moment representation, Nucl. Instrum. Meth. A 391 (1997) 360.
51. R. Ciesielski, Exclusive J/ψproduction in deep inelastic ep scattering in the ZEUS exeriment at HERA, Ph.D. thesis, Warsaw University, Warsaw Poland (2004).
52. ZEUS collaboration, S. Chekanov et al., Leading proton production in deep inelastic scattering at HERA, preprint DESY-08-176, DESY, Germany (2008) [arXiv:0812.2416].[SPIRES].
53. 0 production in deep inelastic scattering at HERA, PMC Phys. A 1 (2007) 6 [arXiv:0708.1478] [SPIRES].
54. 2) and extraction of structure functions in neutral current scattering at HERA, in Proceedings Workshop on Physics at HERA, W. Buchmüller and G. Ingelman eds., vol. 1, DESY, Hamburg Germany (1992), pg. 23.
55. 2 in neutral current events, in Proceedings Workshop on Physics at HERA, W. Buchmüller and G. Ingelman eds., vol. 1, DESY, Hamburg Germany (1992), pg. 43.
56. S. Fazio, Measurement of deeply virtual Compton scattering cross sections at HERA and a new model for the DVCS amplitude. Ph.D. Thesis, Calabria University, Rende Cosenza Italy (2007), available on http://www-zeus.desy.de/ physics/diff/pub/theses.html.
57. I. Grabowska-Bo ld, Measurement of deeply virtual Compton scattering using the ZEUS detector at HERA, Ph.D. Thesis, report DESY-THESIS-2004-034, University of Mining and Metallurgy, Cracow Poland (2003) [SPIRES].
58. ZEUS collaboration, S. Chekanov et al., Exclusive photoproduction of J/ψmesons at HERA, Eur. Phys. J. C 24 (2002) 345 [hep-ex/0201043] [SPIRES].
59. 0 and J/ψmesons at HERA, Eur. Phys. J. C 6 (1999) 603 [hep-ex/9808020] [SPIRES].