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

ATLAS, Collaboration; Agustoni, Marco; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Kabana, Sonja; Marti, Lukas; Meloni, Federico; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania; Weber, Michael (2015). 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. Journal of High Energy Physics, 3(3), p. 88. Springer 10.1007/JHEP03(2015)088

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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. 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 80-160 GeV. 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 tanβ above one for charged Higgs boson masses between 80 GeV and 160 GeV, and exclude a region of parameter space with high tanβ for H ± masses between 200 GeV and 250 GeV.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Physics Institute > Laboratory for High Energy Physics (LHEP)

UniBE Contributor:

Agustoni, Marco; Beck, Hans Peter; Cervelli, Alberto; Ereditato, Antonio; Haug, Sigve; Marti, Lukas; Meloni, Federico; Pretzl, Klaus-Peter; Stramaglia, Maria Elena; Stucci, Stefania and Weber, Michael

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Annette Krebs-Wegenast

Date Deposited:

08 Sep 2016 14:02

Last Modified:

11 Sep 2016 02:13

Publisher DOI:

10.1007/JHEP03(2015)088

ArXiv ID:

1412.6663

Additional Information:

Kollaboration - Es sind nur die Berner Autoren namentlich erwähnt

BORIS DOI:

10.7892/boris.87668

URI:

https://boris.unibe.ch/id/eprint/87668

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