NNLO QCD predictions for fully-differential top-quark pair production at the Tevatron

被引:75
|
作者
Czakon, Michal [1 ]
Fiedler, Paul [1 ]
Heymes, David [2 ]
Mitov, Alexander [2 ]
机构
[1] Rhein Westfal TH Aachen, Inst Theoret Teilchenphys & Kosmol, D-52056 Aachen, Germany
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
来源
基金
英国科学技术设施理事会;
关键词
QCD Phenomenology; DOUBLE-REAL RADIATION; HADRON COLLIDERS; PARTON DISTRIBUTIONS; BOSON PRODUCTION; CROSS-SECTION; LEADING ORDER; ZZ PRODUCTION; JET; ASSOCIATION; PLUS;
D O I
10.1007/JHEP05(2016)034
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 present a comprehensive study of differential distributions for Tevatron top-pair events at the level of stable top quarks. All calculations are performed in NNLO QCD with the help of a fully differential partonic Monte-Carlo and are exact at this order in perturbation theory. We present predictions for all kinematic distributions for which data exists. Particular attention is paid on the top-quark forward-backward asymmetry which we study in detail. We compare the NNLO results with existing approximate NNLO predictions as well as differential distributions computed with different parton distribution sets. Theory errors are significantly smaller than current experimental ones with overall agreement between theory and data.
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页码:1 / 41
页数:41
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