Search for charged Higgs bosons decaying via H ± →τ ± ν τ 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

The ATLAS Collaboration, , Abraham, N L, Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Jones, S D, Lerner, G, Miano, F, Salvatore, F, Santoyo Castillo, I, Shaw, K, Stevenson, T J, Suruliz, K, Sutton, Mark, Tresoldi, F, Trovato, F, Vivarelli, I, Winkels, E, Winston, O J and others, (2018) Search for charged Higgs bosons decaying via H ± →τ ± ν τ 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. Journal of High Energy Physics, 9 (139). pp. 1-47. ISSN 1126-6708

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Abstract

Charged Higgs bosons produced either in top-quark decays or in association with a top-quark, subsequently decaying via H ± →τ ± ν τ , 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 m H ± = 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 ± ν τ ) 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 ± ν τ )

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Experimental Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Alice Jackson
Date Deposited: 09 Nov 2018 16:53
Last Modified: 09 Nov 2018 16:53
URI: http://srodev.sussex.ac.uk/id/eprint/80108

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