Search for charged Higgs bosons decaying into top and bottom quarks at root s=13TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdinov, O, Abeloos, B, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2912 more authors) (2018) Search for charged Higgs bosons decaying into top and bottom quarks at root s=13TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 11 (11). 085-.

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Abstract

A search for charged Higgs bosons heavier than the top quark and decaying via $H^\pm \rightarrow tb$ is presented. The data analysed corresponds to 36.1 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV and was recorded with the ATLAS detector at the LHC in 2015 and 2016. The production of a charged Higgs boson in association with a top quark and a bottom quark, $pp \rightarrow tb H^\pm$, is explored in the mass range from $m_{H^\pm}$ = 200 to 2000 GeV using multi-jet final states with one or two electrons or muons. Events are categorised according to the multiplicity of jets and how likely these are to have originated from hadronisation of a bottom quark. Multivariate 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 fraction of a charged Higgs boson as a function of its mass, which range from 2.9 pb at $m_{H^\pm}$ = 200 GeV to 0.070 pb at $m_{H^\pm}$ = 2000 GeV. The results are interpreted in two benchmark scenarios of the Minimal Supersymmetric Standard Model.

Item Type: Article
Additional Information: 55 pages in total, author list starting page 39, 10 figures, 6 tables, published in JHEP. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2017-04/. HEPdata: https://www.hepdata.net/record/83203
Uncontrolled Keywords: Beyond Standard Model, Hadron-Hadron scattering (experiments), Higgs physics
Depositing User: Symplectic Admin
Date Deposited: 10 Sep 2018 15:25
Last Modified: 19 Jan 2023 01:20
DOI: 10.1007/JHEP11(2018)085
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3026043