Electroweak corrections to top quark pair production in association with a hard photon at hadron colliders

Electroweak corrections to top quark pair production in association with a hard photon at hadron colliders
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强子对撞机中与硬光子相关的顶夸克对产生的电弱校正

DOI:
10.1016/j.physletb.2016.12.061
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发表时间:
2016-12
期刊:
影响因子:
4.4
通讯作者:
Li Gang
Li Gang
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Duan Peng-Fei;Zhang Yu;Wang Yong;Song Mao;Li Gang

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我们提出了当前和未来强子对撞机中与硬光子相关的顶夸克对产生的次领先阶(NLO)电弱(EW)修正。研究了光子横向动量切割对导阶(LO)和非导阶(NLO) EW修正截面的影响。我们还给出了最终顶夸克和光子的横向动量的LO和NLO EW校正分布,以及顶夸克对和顶-反顶光子系统的不变质量。结果表明,由于EW Sudakov效应,NLO - EW修正在高能区是显著的。
We present the next-to-leading order (NLO) electroweak (EW) corrections to the top quark pair production associated with a hard photon at the current and future hadron colliders. The dependence of the leading order (LO) and NLO EW corrected cross sections on the photon transverse momentum cut are investigated. We also provide the LO and NLO EW corrected distributions of the transverse momentum of final top quark and photon and the invariant mass of top quark pair and top–antitop-photon system. The results show that the NLO EW corrections are significant in high energy regions due to the EW Sudakov effect.
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