| 非微扰QCD和核遮蔽效应对K因子的影响 |
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| 引用本文： | 智海素,侯召宇.非微扰QCD和核遮蔽效应对K因子的影响[J].原子核物理评论,2006,23(1):6-9. |
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| 作者姓名： | 智海素 侯召宇 |
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| 作者单位： | [1]石家庄职业技术学院基础部,河北石家庄050081 [2]石家庄铁道学院数理系,河北石家庄050043 [3]河北师范大学物理学院,河北石家庄050016 |
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| 摘 要： | 考虑非微扰量子色动力学物理真空夸克凝聚效应，计算了碳核与碳核在质心系能量分别为630和200GeV时碰撞Drell—Yan过程的K因子，以及加入核遮蔽因子后非微扰效应对K因子的影响，并把计算结果与没有考虑夸克凝聚非微扰效应的K值进行了对比。结果表明，非微扰效应和核遮蔽效应对K因子影响很小。Considering quark condensate contributions from the QCD vacuum, the non-perturbative effect on the K-factor is investigated for the C-C collision Drell-Yan process with and without nuclear shadowing respectively, at the center-of-mass energy √s= 630 and 200 GeV. Comparison of the results indicates that both the non-perturbative effect and the nuclear shadowing effect pose a weak influence on the K-factor.
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| 关 键 词： | K因子 Drell—Yan过程 夸克凝聚 非微扰量子色动力学 核遮蔽效应 |
| 文章编号： | 1007-4627（2006）01-0006-04 |
| 收稿时间： | 2005-10-08 |
| 修稿时间： | 2005-12-30 |
Non-perturbative QCD and Nuclear Shadowing Effect on K-factor |
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| ZHI Hai-su,HOU Zhao-yu.Non-perturbative QCD and Nuclear Shadowing Effect on K-factor[J].Nuclear Physics Review,2006,23(1):6-9. |
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| Authors: | ZHI Hai-su HOU Zhao-yu |
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| Institution: | 1 Basic Education Department, Shijiazhuang Professional Technology, Shijiazhuang 050081,China; 2 Mathematics and Physics Department, Shijiazhuang Railway Institute, Shijiazhuang 050043, China;3 Physics Department, Hehei Normal University, Shijiazhuang 050016, China |
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| Abstract: | Considering quark condensate contributions from the QCD vacuum,the non-perturbative effect on the K-factor is investigated for the C-C collision Drell-Yan process with and without nuclear shadowing respectively,at the center-of-mass energy s= 630 and 200 GeV.Comparison of the results indicates that both the non-perturbative effect and the nuclear shadowing effect pose a weak influence on the K-factor. |
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| Keywords: | K-factor Drell-Yan process quark condensation non-perturbative QCD nuclear shadowing |
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