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Search for charged Higgs bosons produced in top-quark decays or in association with top quarks and decaying via H+- → [tau]+-[nu][tau] in 13 TeV pp collisions with the ATLAS detector

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 140 fb−1 of proton-proton collision data at √𝑠 =13 TeV recorded with the ATLAS detector. Depending on whether the top quark is produced together with...

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Main Authors: Aad, Georges (Author) , Ackermann, Anke (Author) , Baltes, Lisa Marie (Author) , Bartels, Falk (Author) , Dittmeier, Sebastian (Author) , Dunford, Monica (Author) , Franchino, Silvia (Author) , Junkermann, Thomas (Author) , Mkrtchyan, Tigran (Author) , Rassloff, Damir Fabrice (Author) , Sanfilippo, Lorenzo (Author) , Schöning, André (Author) , Schultz-Coulon, Hans-Christian (Author) , Sothilingam, Varsiha (Author) , Stamen, Rainer (Author) , Vigani, Luigi (Author) , Wessels, Martin (Author) , Zinßer, Joachim (Author)
Corporate Author: ATLAS Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 9 April 2025
In: Physical review
Year: 2025, Volume: 111, Issue: 7, Pages: 1-31
ISSN:2470-0029
DOI:10.1103/PhysRevD.111.072006
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevD.111.072006
Verlag, kostenfrei, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.111.072006
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Author Notes:G. Aad et al. (ATLAS Collaboration)*
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Summary: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 140 fb−1 of proton-proton collision data at √𝑠 =13 TeV recorded with the ATLAS detector. Depending on whether the top quark is produced together with the 𝐻± decays hadronically or semileptonically, the search targets 𝜏 +jets or 𝜏 +lepton final states, in both cases with a 𝜏-lepton decaying into a neutrino and hadrons. No significant excess over the Standard Model background expectation is observed. For the mass range of 80 ≤𝑚𝐻± ≤3000 GeV, upper limits at 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 4.5 pb-0.4 fb. In the mass range 80-160 GeV, assuming the Standard Model cross section for 𝑡⁢¯𝑡 production, this corresponds to upper limits between 0.27% and 0.02% on ℬ⁡(𝑡 →𝑏⁢𝐻±) ×ℬ⁡(𝐻± →𝜏±⁢𝜈𝜏).
Item Description:Veröffentlicht: 9. April 2025
*ATLAS Collaboration: G. Aad, A. Ackermann, L.M. Baltes, F. Bartels, S.J. Dittmeier, M. Dunford, S. Franchino, T. Junkermann, T. Mkrtchyan, D.F. Rassloff, L. Sanfilippo, A. Schoening, H.-C. Schultz-Coulon, V. Sothilingam, R. Stamen, L. Vigani, M. Wessels, J. Zinsser [und 2873 weitere Personen]
Gesehen am 06.03.2026
Im Titel ist der zweite Buchstabe "tau" tiefgestellt
Im Titel sind die Plus- und Minuszeichen hochgestellt
Physical Description:Online Resource
ISSN:2470-0029
DOI:10.1103/PhysRevD.111.072006

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