Automatic computations at next-to-leading order in QCD for top-quark flavor-changing neutral processes

被引：54

作者：

Degrande, Celine ^{[1
]}

Maltoni, Fabio ^{[2
]}

Wang, Jian ^{[3
,4
]}

Zhang, Cen ^{[5
]}

机构：

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

[2] Catholic Univ Louvain, Ctr Cosmol Particle Phys & Phenomenol, B-1348 Louvain, Belgium

[3] Johannes Gutenberg Univ Mainz, PRISMA Cluster Excellence, D-55099 Mainz, Germany

[4] Johannes Gutenberg Univ Mainz, Mainz Inst Theoret Phys, D-55099 Mainz, Germany

[5] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA

来源：

PHYSICAL REVIEW D | 2015年 / 91卷 / 03期

关键词：

STANDARD; DECAYS;

D O I：

10.1103/PhysRevD.91.034024

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Computations at next-to-leading order in the Standard Model offer new technical challenges in the presence of higher dimensional operators. We introduce a framework that, starting from the top-quark effective field theory at dimension six, allows one to make predictions for cross sections as well as distributions in a fully automatic way. As an application, we present the first complete results at next-toleading order in QCD for flavor-changing neutral interactions including parton shower effects, for tZ, th, t gamma. associated production at the LHC.

引用

页数：6