Photoproduction of J/ ψ in pp and PbPb Collisions at Leading Order
ZHU Jia-Qing, LI Yun-De**
Department of physics, Yunnan University, Kunming 650091
Abstract ：The production of J/ ψ originating from photoproduction processes in pp and PbPb collisions at leading order is calculated. We use the color singlet and color octet mechanisms for heavy quarkonium production to deal with the direct photon processes, and consider fragmentation processes. The shadowing and iso-spin of the nucleus are also considered in our calculation. The numerical results show that the modification of photoproduction processes for J/ψ production becomes obvious in the large pT region at LHC energy.
收稿日期: 2011-10-17
出版日期: 2012-07-31
[1] Bodwin G T, Braaten E and Lepage G P 1995 Phys. Rev. D 51 1125 1997 Phys. Rev. D 55 5853 1988 Nucl. Phys. B 303 607 1989 Phys. Rev. D 40 54 1996 Phys. Rev. D 53 6203 2010 Phys. Rev. Lett. 104 072001 2011 Phys. Rev. Lett. 106 022003 2011 Phys. Rev. D 84 051501(R) 2009 Chin. Phys. Lett. 26 111201 2010 Chin. Phys. Lett. 27 101202 2011 Nucl. Phys. A 865 76 2011 Phys. Rev. C 84 044906 1981 Phys. Rev. D 23 1521 1983 Z. Phys. C 19 251 1996 Phys. Rev. D 53 150 2001 Prog. Part. Nucl. Phys. 47 141 1996 Annu. Rev. Nucl. Part. Sci. 46 197 2000 Int. J. Mod. Phys. A 15 461 1997 Phys. Rev. D 55 4129 1997 arXiv:9702225v1[hep-ph] 1996 Phys. Rev. D 54 4312 1999 Phys. Rev. D 60 119902(E) 2003 Phys. Rev. D 68 034017 1994 Phys. Rev. D 50 2335 1998 J. Phys. G 24 1657 2001 Phys. Rep. 345 265 1999 Phys. Rev. D 60 054019 2000 Phys. Rep. 332 165 1992 Phys. Rev. D 46 1973 1992 Z. Phys. C 53 127 1987 Nucl. Phys. B 291 746 Appl. Perturbative QCD (New York: Addison-Wesley Publishing Company) p 1221993 Phys. Rev. D 48 R5049 1995 Phys. Rev. D 51 R2039 2010 J. Phys. G 37 075021 1998 Phys. Rev. D 57 4258 2000 Phys. Rev. D 61 114013
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[2]
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[3]
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[4]
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[5]
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[6]
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[7]
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2012, Vol. 29 
