Direct Hard Photoproduction of J/ψ andγ in High Energy Pb-Pb and Ca-Ca Collisions at LHC

Li Yunde; Xu Xiaomei; Liu Lianshou

Chinese Physics C> 1999, Vol. 23> Issue(8) : 837-840

Direct Hard Photoproduction of J/ψ andγ in High Energy Pb-Pb and Ca-Ca Collisions at LHC

Department of Physics, Yunnan University Kunming 6500912 Department of Physics, Yunnan Normal University, Kunming 6500923 Institute of Particle Physics, Huazhong Normal University, Wuhan 430070

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Abstract：
Direct hard PhotoProduction of J/ψ and γ at LHC Pb-Pb collisions with CMS energy 5.5ATeV, and Ca-Ca collisions with CMS energy 7ATeV, are discussed in the process: A+A→A+J/ψ(γ) + X. It turns out that the processes can be used to testing the gluon distribution in the nucleus, as well as to studying the mechanism of large P_t gluon and heavy quark fragmentation of J/ψ.

References

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ALICE Collab. CERN/LHCC/95–01; Eggert K et al. CERN/LHCC 97–45, LHCC/110, 1997 2 Baur G hep–h/98043483 Sadovsky S A. ALICE/95–30 4 Baier K Ruckl K Z. Phys, 1983, C19:2515 UAl Collab, Albajar C et al. Phys. Lett 1991, B256:1126 CDF Collab, Abe F et al. Phys. Rev Lett, 1992, 69:37047 Braaten E, Yuan T C. Phys. Rev Lett, 1993, 71:16738 E Braaten, K Cheung, Yuan T C Phys. Rev 1993, D48:5049 9 Papageorgiu E. Phys. lett., 1990,B250: 155;Phys、Lett,1989, B223:45410 Bazizi K A. FERMILAB–Conf–95/238-E 11 Kunszt Z. Phys. Lett., 1988, B207:103

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Li Yunde, Xu Xiaomei and Liu Lianshou. Direct Hard Photoproduction of J/ψ andγ in High Energy Pb-Pb and Ca-Ca Collisions at LHC[J]. Chinese Physics C, 1999, 23(8): 837-840.

Li Yunde, Xu Xiaomei and Liu Lianshou. Direct Hard Photoproduction of J/ψ andγ in High Energy Pb-Pb and Ca-Ca Collisions at LHC[J]. Chinese Physics C, 1999, 23(8): 837-840. shu

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Received: 1999-02-23
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Direct Hard Photoproduction of J/ψ andγ in High Energy Pb-Pb and Ca-Ca Collisions at LHC

Corresponding author: Li Yunde,

Department of Physics, Yunnan University Kunming 6500912 Department of Physics, Yunnan Normal University, Kunming 6500923 Institute of Particle Physics, Huazhong Normal University, Wuhan 430070

Received Date: 1999-02-23
Accepted Date: 1900-01-01
Available Online: 1999-08-05

Abstract: Direct hard PhotoProduction of J/ψ and γ at LHC Pb-Pb collisions with CMS energy 5.5ATeV, and Ca-Ca collisions with CMS energy 7ATeV, are discussed in the process: A+A→A+J/ψ(γ) + X. It turns out that the processes can be used to testing the gluon distribution in the nucleus, as well as to studying the mechanism of large P_t gluon and heavy quark fragmentation of J/ψ.