非微扰QCD和核遮蔽效应对K因子的影响

Non-perturbative QCD and Nuclear Shadowing Effect on K-factor

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

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.
- 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
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.
- K-factor /
- Drell-Yan process /
- quark condensation /
- non-perturbative QCD /
- nuclear shadowing