NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction

被引:379
|
作者
Czakon, Michal [1 ]
Mitov, Alexander [2 ]
机构
[1] Rhein Westfal TH Aachen, Inst Theoret Teilchenphys & Kosmol, D-52056 Aachen, Germany
[2] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
来源
JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 01期
关键词
QCD Phenomenology; NLO Computations; HIGH-ENERGY FACTORIZATION; DOUBLE-REAL RADIATION; THRESHOLD EXPANSION; SINGULAR BEHAVIOR; QCD AMPLITUDES; CROSS-SECTION; SCATTERING;
D O I
10.1007/JHEP01(2013)080
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We compute the next-to-next-to-leading order QCD correction to the total inclusive top pair production cross-section in the reaction qg -> t (t) over bart + X. We find moderate O(1%) correction to central values at both Tevatron and LHC. The scale variation of the cross-section remains unchanged at the Tevatron and is significantly reduced at the LHC. We find that recently introduced approximation based on the high-energy limit of the top pair cross-section significantly deviates from the exact result. The results derived in the present work are included in version 1.4 of the program Top++. Work towards computing the reaction gg -> t (t) over bar + X is ongoing.
引用
收藏
页数:19
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