Search for charged Higgs bosons decaying into a top quark and a bottom quark at √s=13 TeV with the ATLAS detector



Aad, G, Abbott, B, Abbott, DC, Abud, A Abed, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2913 more authors) (2021) Search for charged Higgs bosons decaying into a top quark and a bottom quark at √s=13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 06 (6). 145-.

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Abstract

A search for charged Higgs bosons decaying into a top quark and a bottom quark is presented. The data analysed correspond to 139 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$=13TeV, recorded with the ATLAS detector at the LHC. The production of a heavy charged Higgs boson in association with a top quark and a bottom quark, $pp\rightarrow tbH^{+}\rightarrow tbtb$, is explored in the $H^+$ mass range from 200 to 2000 GeV using final states with jets and one electron or muon. Events are categorised according to the multiplicity of jets and $b$-tagged jets, and multivariate analysis techniques are used to discriminate between signal and background events. No significant excess above the background-only hypothesis is observed and exclusion limits are derived for the production cross-section times branching ratio of a charged Higgs boson as a function of its mass; they range from 3.6 pb at 200 GeV to 0.036 pb at 2000 GeV at 95% confidence level. The results are interpreted in the hMSSM and $M_h^{125}$ scenarios.

Item Type: Article
Additional Information: 47 pages in total, author list starting page 31, 7 figures, 4 tables, submitted to JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HDBS-2018-51/
Uncontrolled Keywords: Hadron-Hadron scattering (experiments)
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 02 Aug 2021 09:45
Last Modified: 16 Oct 2023 19:20
DOI: 10.1007/JHEP06(2021)145
Open Access URL: https://link.springer.com/article/10.1007%2FJHEP06...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3131592