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On the application of gluon to heavy quarkonium fragmentation function

文献类型：期刊论文

作者Qi W(戚伟); Qi, W; Wang JX(王建雄); Qiao, CF; Wang, JX
刊名HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
出版日期2007
卷号31期号:8页码:715-718
关键词gluon fragmentation function heavy quarkonium uncertainty
通讯作者Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China ; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
英文摘要We analyze the uncertainties induced by different definitions of the momentum fraction z in the application of gluon to heavy quarkonium fragmentation function. We numerically calculate the initial g -> J/psi fragmentation functions by using the non-covariant definitions of z with finite gluon momentum and find that these fragmentation functions have strong dependence on the gluon momentum k. As vertical bar k vertical bar -> infinity, these fragmentation functions approach to the fragmentation function in the light-cone definition. We find that when vertical bar k vertical bar is small (for instance in the typical energy scale (about 4-20GeV) of the gluon production at the hadron colliders, such as Tevatron and LHC), large uncertainty remains while the in-covariant definitions of z are employed in the application of the fragmentation functions.
学科主题Physics
类目[WOS]Physics, Nuclear ; Physics, Particles & Fields
研究领域[WOS]Physics
原文出处SCI
语种英语
WOS记录号WOS:000248405400003
源URL[http://ir.ihep.ac.cn/handle/311005/238334]  
专题高能物理研究所_理论物理室
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Qi W,Qi, W,Wang JX,et al. On the application of gluon to heavy quarkonium fragmentation function[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2007,31(8):715-718.
APA 戚伟,Qi, W,王建雄,Qiao, CF,&Wang, JX.(2007).On the application of gluon to heavy quarkonium fragmentation function.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,31(8),715-718.
MLA 戚伟,et al."On the application of gluon to heavy quarkonium fragmentation function".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 31.8(2007):715-718.

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来源：高能物理研究所

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