Home > Research > Publications & Outputs > Search for charged Higgs bosons decaying via H ...
View graph of relations

Search for charged Higgs bosons decaying via H ± → τ ± ν in fully hadronic final states using pp collision data at √s = 8 TeV with the ATLAS detector

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
  • The ATLAS collaboration
Close
Article number88
<mark>Journal publication date</mark>2015
<mark>Journal</mark>Journal of High Energy Physics
Issue number3
Volume2015
Number of pages45
Publication StatusPublished
<mark>Original language</mark>English

Abstract

The results of a search for charged Higgs bosons decaying to a τ lepton and a neutrino, H ± → τ ± ν, are presented. The analysis is based on 19.5 fb−1 of proton-proton collision data at s√ = 8 TeV collected by the ATLAS experiment at the Large Hadron Collider. Charged Higgs bosons are searched for in events consistent with top-quark pair production or in associated production with a top quark, depending on the considered H ± mass. The final state is characterised by the presence of a hadronic τ decay, missing transverse momentum, b-tagged jets, a hadronically decaying W boson, and the absence of any isolated electrons or muons with high transverse momenta. The data are consistent with the expected background from Standard Model processes. A statistical analysis leads to 95% confidence-level upper limits on the product of branching ratios ℬ(t → bH ±) × ℬ(H ± → τ ± ν), between 0.23% and 1.3% for charged Higgs boson masses in the range 80-160GeV. It also leads to 95% confidence-level upper limits on the production cross section times branching ratio, σ(pp → tH ± + X) × ℬ(H ± → τ ± ν), between 0.76 pb and 4.5 fb, for charged Higgs boson masses ranging from 180 GeV to 1000 GeV. In the context of different scenarios of the Minimal Supersymmetric Standard Model, these results exclude nearly all values of tan β above one for charged Higgs boson masses between 80 GeV and 160 GeV, and exclude a region of parameter space with high tan β for H ± masses between 200 GeV and 250 GeV.

Bibliographic note

The final publication is available at Springer via http://dx.doi.org/10.1007/JHEP03(2015)088