NNLO QCD corrections to event orientation in e+e- annihilation

被引：9

作者：

Gehrmann, T. ^{[1
]}

Glover, E. W. N. ^{[2
]}

Huss, A. ^{[3
]}

Niehues, J. ^{[1
]}

Zhang, H. ^{[1
]}

机构：

[1] Univ Zurich, Dept Phys, Winterthurerstr 190, CH-8057 Zurich, Switzerland

[2] Univ Durham, Inst Particle Phys Phenomenol, Durham DH1 3LE, England

[3] ETH, Inst Theoret Phys, CH-8093 Zurich, Switzerland

来源：

PHYSICS LETTERS B | 2017年 / 775卷

基金：

美国国家科学基金会; 瑞士国家科学基金会; 英国科学技术设施理事会;

关键词：

TO-LEADING-ORDER; ONE-LOOP AMPLITUDES; JET CROSS-SECTIONS; 3-JET EVENTS; SHAPE DISTRIBUTIONS; E+E-ANNIHILATION;

D O I：

10.1016/j.physletb.2017.10.069

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new implementation of the NNLO QCD corrections to three-jet final states and related event-shape observables in electron-positron annihilation. Our implementation is based on the antenna subtraction method, and is performed in the NNLOjet framework. The calculation improves upon earlier results by taking into account the full kinematical information on the initial state momenta, thereby allowing the event orientation to be computed to NNLO accuracy. We find the event-orientation distributions at LEP and SLC to be very robust under higher order QCD corrections. (C) 2017 Published by Elsevier B.V.

引用

页码：185 / 189

页数：5

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