Search for charged Higgs bosons decaying into top and bottom quarks at √s=13TeV with the ATLAS detectorShow others and affiliations
Number of Authors: 29212018 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 11, article id 085Article in journal (Refereed) Published
Abstract [en]
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 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 m(H)+/- = 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 m(H)+/- = 200 GeV to 0.070 pb at m(H)+/- = 2000 GeV. The results are interpreted in two benchmark scenarios of the Minimal Supersymmetric Standard Model.
Place, publisher, year, edition, pages
2018. no 11, article id 085
Keywords [en]
Beyond Standard Model, Hadron-Hadron scattering (experiments), Higgs physics
National Category
Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-372715DOI: 10.1007/JHEP11(2018)085ISI: 000450508300001OAI: oai:DiVA.org:uu-372715DiVA, id: diva2:1276558
Funder
Swedish Research CouncilEU, European Research CouncilEU, Horizon 2020
Note
For complete list of authors see http://dx.doi.org/10.1007/JHEP11(2018)085
2019-01-082019-01-082019-07-31Bibliographically approved
In thesis