Chiral couplings of W′ and top quark polarization at the LHC

被引：49

作者：

Gopalakrishna, Shrihari ^{[1
,2
]}

Han, Tao ^{[3
]}

Lewis, Ian ^{[3
]}

Si, Zong-guo ^{[4
]}

Zhou, Yu-Feng ^{[5
,6
]}

机构：

[1] Inst Math Sci, Madras 600113, Tamil Nadu, India

[2] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[4] Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China

[5] Chinese Acad Sci, Kavli Inst Theoret Phys China, Inst Theoret Phys, Beijing 100190, Peoples R China

[6] Chinese Acad Sci, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW D | 2010年 / 82卷 / 11期

基金：

美国国家科学基金会;

关键词：

LEFT-RIGHT SYMMETRY; PAIR PRODUCTION; GAUGE BOSONS; DECAY; BOUNDS; DISTRIBUTIONS; INTERFERENCE; VIOLATION; PHYSICS; MODEL;

D O I：

10.1103/PhysRevD.82.115020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

If a TeV-scale charged gauge boson (W') is discovered at the Large Hadron Collider (LHC), it will become imperative to determine its chiral couplings to standard model (SM) fermions in order to learn about the underlying theory containing the W'. We describe the reconstruction of the tb decay mode of the W' at the LHC, and identify various kinematic observables such as the angular distributions of the top quark and the lepton resulting from top decay that can be used to disentangle the chiral couplings of the W' to SM fermions. We demonstrate by presenting analytical expressions, numerical simulations, as well as intuitive illustrations for these observables at the LHC that among the SM fermions, the polarized top quark can most directly probe the chirality of such couplings.

引用

页数：19

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