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

Research output: Contribution to journalArticlepeer-review

Authors

Colleges, School and Institutes

External organisations

  • Université Mohamed Premier and LPTPM

Abstract

A search for charged Higgs bosons heavier than the top quark and decaying
via H± → tb is presented. The data analysed corresponds to 36.1 fb−1 of pp collisions at √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 → tbH±, is explored in the mass range from mH± = 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 ratio of a charged Higgs boson as a function of its mass, which range from 2.9 pb at mH± = 200 GeV to 0.070 pb at mH± = 2000 GeV. The results are interpreted in two benchmark scenarios of the Minimal Supersymmetric Standard Model.

Bibliographic note

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

Details

Original languageEnglish
Article number85
JournalJournal of High Energy Physics
Volume2018
Publication statusPublished - 13 Nov 2018

Keywords

  • hep-ex