Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/139722
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DC Field | Value | Language |
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dc.contributor.author | Aad, G. | - |
dc.contributor.author | Abbott, B. | - |
dc.contributor.author | Abbott, D.C. | - |
dc.contributor.author | Abeling, K. | - |
dc.contributor.author | Abidi, S.H. | - |
dc.contributor.author | Aboulhorma, A. | - |
dc.contributor.author | Abramowicz, H. | - |
dc.contributor.author | Abreu, H. | - |
dc.contributor.author | Abulaiti, Y. | - |
dc.contributor.author | Abusleme Hoffman, A.C. | - |
dc.contributor.author | Acharya, B.S. | - |
dc.contributor.author | Adam Bourdarios, C. | - |
dc.contributor.author | Adamczyk, L. | - |
dc.contributor.author | Adamek, L. | - |
dc.contributor.author | Addepalli, S.V. | - |
dc.contributor.author | Adelman, J. | - |
dc.contributor.author | Adiguzel, A. | - |
dc.contributor.author | Adorni, S. | - |
dc.contributor.author | Adye, T. | - |
dc.contributor.author | Affolder, A.A. | - |
dc.contributor.author | et al. | - |
dc.date.issued | 2023 | - |
dc.identifier.citation | The Journal of High Energy Physics, 2023; 2023(7):166-0-166-73 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.uri | https://hdl.handle.net/2440/139722 | - |
dc.description | Published: July 21, 2023 | - |
dc.description.abstract | This paper presents direct searches for lepton flavour violation in Higgs boson decays, H → eτ and H → μτ, performed using data collected with the ATLAS detector at the LHC. The searches are based on a data sample of proton-proton collisions at a centre-of-mass energy s√ = 13 TeV, corresponding to an integrated luminosity of 138 fb⁻¹. Leptonic (τ → ℓνℓντ) and hadronic (τ → hadrons ντ) decays of the τ-lepton are considered. Two background estimation techniques are employed: the MC-template method, based on data-corrected simulation samples, and the Symmetry method, based on exploiting the symmetry between electrons and muons in the Standard Model backgrounds. No significant excess of events is observed and the results are interpreted as upper limits on lepton-flavour-violating branching ratios of the Higgs boson. The observed (expected) upper limits set on the branching ratios at 95% confidence level, B(H → eτ) < 0.20% (0.12%) and B(H → μτ ) < 0.18% (0.09%), are obtained with the MC-template method from a simultaneous measurement of potential H → eτ and H → μτ signals. The best-fit branching ratio difference, B(H → μτ) → B(H → eτ), measured with the Symmetry method in the channel where the τ-lepton decays to leptons, is (0.25 ± 0.10)%, compatible with a value of zero within 2.5σ. | - |
dc.description.statementofresponsibility | G. Aad ... M. Amerl ... E. K. Filmer ... P. Jackson ... A. X. Y. Kong ... H. Potti ... T. A. Ruggeri ... E. X. L. Ting ... M. J. White ... et al. (The ATLAS collaboration) | - |
dc.language.iso | en | - |
dc.publisher | Springer-Verlag | - |
dc.rights | Open Access, Copyright CERN, for the benefit of the ATLAS Collaboration. Article funded by SCOAP3. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. | - |
dc.source.uri | http://dx.doi.org/10.1007/jhep07(2023)166 | - |
dc.subject | Hadron-Hadron Scattering | - |
dc.title | Searches for lepton-flavour-violating decays of the Higgs boson into eτ and μτ in √s = 13 TeV pp collisions with the ATLAS detector | - |
dc.title.alternative | Searches for lepton-flavour-violating decays of the Higgs boson into e tau and mu tau in root s = 13 TeV pp collisions with the ATLAS detector | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1007/JHEP07(2023)166 | - |
dc.relation.grant | ARC | - |
pubs.publication-status | Published | - |
Appears in Collections: | Physics publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_139722.pdf | Published version | 3.62 MB | Adobe PDF | View/Open |
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