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Search for a Charged Higgs Boson Decaying to Charm and Bottom Quarks in Proton-Proton Collisions at √s = 8 TeV

Author(s)
CMS Collaboration; Abercrombie, Daniel Robert; Allen, Brandon Leigh; Azzolini, Virginia; Baty, Austin Alan; Bauer, Gerry P; Bi, Ran; Brandt, Stephanie Akemi; Busza, Wit; Cali, Ivan Amos; D'Alfonso, Mariarosaria; Demiragli, Zeynep; Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Harris, Philip Coleman; Hsu, Dylan George; Hu, Miao; Iiyama, Yutaro; Innocenti, Gian Michele; Klute, Markus; Kovalskyi, Dmytro; Lee, Yen-Jie; Luckey Jr, P David; Maier, Benedikt; Marini, Andrea Carlo; McGinn, Christopher Francis; Mironov, Camelia Maria; Narayanan, Siddharth Madhavan; Niu, Xinmei; Paus, Christoph M. E.; Roland, Christof E; Roland, Gunther M; Stephans, George S. F.; Sumorok, Konstanty C; Tatar, Kaya; Velicanu, Dragos Alexandru; Wang, Jing; Wang, Ta-Wei; Wyslouch, Boleslaw; Shi, Zhaozhong; ... Show more Show less
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Abstract
A search for charged Higgs boson decaying to a charm and a bottom quark (H+→cb¯¯¯) is performed using 19.7 fb⁻¹ of pp collision data at √s = 8 TeV. The production mechanism investigated in this search is tt¯ pair production in which one top quark decays to a charged Higgs boson and a bottom quark and the other decays to a charged lepton, a neutrino, and a bottom quark. Charged Higgs boson decays to cb¯¯¯ are searched for, resulting in a final state containing at least four jets, a charged lepton (muon or electron), and missing transverse momentum. A kinematic fit is performed to identify the pair of jets least likely to be the bottom quarks originating from direct top quark decays and the invariant mass of this pair is used as the final observable in the search. No evidence for the presence of a charged Higgs boson is observed and upper limits at 95% confidence level of 0.8–0.5% are set on the branching fraction ℬ(t → H⁺b), assuming ℬ(H⁺ → cb¯¯¯) = 1.0 and ℬ(t → H⁺b) + ℬ(t → Wb) = 1.0, for the charged Higgs boson mass range 90–150 GeV. Keywords: Hadron-Hadron scattering (experiments); Higgs physics
Date issued
2018-11
URI
http://hdl.handle.net/1721.1/119398
Department
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Journal of High Energy Physics
Publisher
Springer Nature
Citation
Sirunyan, A. M. et al. “Search for a Charged Higgs Boson Decaying to Charm and Bottom Quarks in Proton-Proton Collisions at √s = 8 TeV.” Journal of High Energy Physics 2018, 11 (November 2018): 115 © 2018 The Author(s)
Version: Final published version
ISSN
1029-8479

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