Search for a light charged Higgs boson decaying to cS in pp collisions at p s = 8 TeV

Authors

The CMS Collaboration
V. Khachatryan, Yerevan Physics Institute
A. M. Sirunyan, Yerevan Physics Institute
Marc M. Baarmand, Florida Institute of Technology
Vallary Bhopatkar, Florida Institute of Technology
Marcus Hohlmann, Florida Institute of Technology
Himali Kalakhety, Florida Institute of Technology
Daniel Noonan, Florida Institute of Technology
Tuhin Roy, Florida Institute of Technology
Francisco Yumiceva, Florida Institute of Technology

Document Type

Article

Publication Title

Journal of High Energy Physics

Abstract

A measurement of the W boson helicity is presented, where the W boson originates from the decay of a top quark produced in pp collisions. The event selection, optimized for reconstructing a single top quark in the final state, requires exactly one isolated lepton (muon or electron) and exactly two jets, one of which is likely to originate from the hadronization of a bottom quark. The analysis is performed using data recorded at a center-of-mass energy of 8 TeV with the CMS detector at the CERN LHC in 2012. The data sample corresponds to an integrated luminosity of 19.7 fb⁻¹. The measured helicity fractions are F L = 0.298 ± 0.028 (stat) ± 0.032(syst), F 0 = 0.720 ± 0.039 (stat) ± 0.037(syst), and F R = −0.018 ± 0.019 (stat) ± 0.011(syst). These results are used to set limits on the real part of the tWb anomalous couplings, g L and g R.

DOI

10.1007/JHEP12(2015)178

Publication Date

2015

Recommended Citation

The CMS collaboration., Khachatryan, V., Sirunyan, A.M. et al. Search for a light charged Higgs boson decaying to in pp collisions at TeV. J. High Energ. Phys. 2015, 1–37 (2015). https://doi.org/10.1007/JHEP12(2015)178