Theoretical top quark cross section at the Fermilab Tevatron and the CERN LHC

被引:174
作者
Kidonakis, Nikolaos [1 ]
Vogt, Ramona [2 ,3 ]
机构
[1] Kennesaw State Univ, Kennesaw, GA 30144 USA
[2] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA
[3] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
来源
PHYSICAL REVIEW D | 2008年 / 78卷 / 07期
基金
美国国家科学基金会;
关键词
D O I
10.1103/PhysRevD.78.074005
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We present results for the top quark pair cross section at the Tevatron and the LHC. We use the resummed double differential cross section, employing the fully kinematics-dependent soft-anomalous-dimension matrices, to calculate the soft-gluon contributions at next-to-next-to-leading order (NNLO). We improve and update our previous estimates by refining our methods, including further subleading terms, and employing the most recent parton distribution function sets. The NNLO soft corrections significantly enhance the NLO cross section while considerably reducing the scale dependence. We provide a detailed discussion of all theoretical uncertainties in our calculation, including kinematics, scale, and parton distribution uncertainties, and clarify the differences between our work and other approaches in the literature.
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页数:9
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