Next-to-leading order QCD corrections to a heavy resonance production and decay into top quark pair at the LHC

被引：28

作者：

Gao, Jun ^{[1
,2
]}

Li, Chong Sheng ^{[1
,2
]}

Li, Bo Hua ^{[1
,2
]}

Zhu, Hua Xing ^{[1
,2
]}

Yuan, C-P. ^{[3
]}

机构：

[1] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[2] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 01期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

GAUGE; PHYSICS;

D O I：

10.1103/PhysRevD.82.014020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a complete next-to-leading order (NLO) QCD calculation to a heavy resonance production and decay into a top quark pair at the LHC, where the resonance could be either a Randall-Sundrum Kaluza-Klein graviton G or an extra gauge boson Z'. The complete NLO QCD corrections can enhance the total cross sections by about 80%-100% and 20%-40% for the G and the Z', respectively, depending on the resonance mass. We also explore in detail the NLO corrections to the polar angle distributions of the top quark, and our results show that the shapes of the NLO distributions can be different from the leading order ones for the Kaluza-Klein graviton. Moreover, we study the NLO corrections to the spin correlations of the top quark pair production via the above process, and find that the corrections are small.

引用

页数：10

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