Search for charged Higgs bosons decaying via H ± → τ ± ντ in the τ+jets and τ+lepton final states with 36 fb−1 of pp collision data recorded at √s=13 TeV with the ATLAS experiment

Research output: Contribution to journalArticle

  • External authors:
  • Agni Bethani
  • Brian Cox
  • Jonathan Crane
  • Cinzia Da Via
  • Nicholas Dann
  • Sam Dysch
  • Alessandra Forti
  • David Lack
  • Jiri Masik
  • Stephen Menary
  • Alexander Oh
  • Emily Orgill
  • Joleen Pater
  • Yvonne Peters
  • Yang Qin
  • Jacob Rawling
  • Rhys Roberts
  • Nicolas Scharmberg
  • Savanna Shaw
  • Stephen Watts
  • Terence Wyatt
  • The ATLAS Collaboration

Abstract

Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via H± → τ±ντ, are searched for in 36.1 fb−1 of proton-proton collision data at s√=13 TeV recorded with the ATLAS detector. Depending on whether the top-quark produced together with H± decays hadronically or leptonically, the search targets τ+jets and τ+lepton final states, in both cases with a hadronically decaying τ-lepton. No evidence of a charged Higgs boson is found. For the mass range of mH± = 90–2000 GeV, upper limits at the 95% confidence level are set on the production cross-section of the charged Higgs boson times the branching fraction B(H±→τ±ντ) in the range 4.2–0.0025 pb. In the mass range 90–160 GeV, assuming the Standard Model cross-section for tt¯ production, this corresponds to upper limits between 0.25% and 0.031% for the branching fraction B(t→bH±)×B(H±→τ±ντ) .

Bibliographical metadata

Original languageEnglish
JournalThe Journal of High Energy Physics
Volume139
Early online date25 Sep 2018
DOIs
Publication statusPublished - Sep 2018