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题名: J/psi polarization in photoproduction up to the next-to-leading order of QCD
作者: Chang, Chao-Hsi ;  Li, Rong ;  Wang, Jian-Xiong
刊名: PHYSICAL REVIEW D
出版日期: 2009
卷号: 80, 期号:3, 页码:-
关键词: INELASTIC PHOTOPRODUCTION ;  HEAVY QUARKONIUM ;  STATES ;  HERA ;  PSI ;  LHC
学科分类: Physics
通讯作者: Chang, CH , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
部门归属: [Chang, CH; Li, R; Wang, JX] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; [Chang, CH] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; [Chang, CH; Li, R; Wang, JX] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
英文摘要: We investigate the J/psi polarization in photoproduction at the Hadron Electron Ring Accelerator (HERA) up to the next-to-leading order of QCD. The results show that the transverse momentum p(t) and energy fraction z distributions of J/psi production do not agree with the observed ones very well. The theoretical uncertainties for the z distributions of the J/psi polarization parameters with respect to various choices of the renormalization and factorization scales are too large to give a definite predication. The uncertainties for the p(t) distributions of these parameters are small when p(t) > 3 GeV and the obtained p(t) distributions cannot describe the experimental data even in this region.
资助者: National Natural Science Foundation of China[10775141, 10547001, 10875155]; Chinese Academy of Sciences[KJCX3-SYW-N2]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000269641100042
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5267
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Chang, Chao-Hsi,Li, Rong,Wang, Jian-Xiong. J/psi polarization in photoproduction up to the next-to-leading order of QCD[J]. PHYSICAL REVIEW D,2009,80(3):-.
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