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Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector

Aad, G. ; Åkesson, T.P.A. LU orcid ; Astrand, K.S.V. LU ; Calic, L. LU orcid ; Doglioni, C. LU ; Ekman, P.A. LU orcid ; Hedberg, V. LU ; Herde, H. LU orcid ; Konya, B. LU and Lytken, E. LU orcid , et al. (2025) In Physical Review Letters 135(23).
Abstract
A search for the dimuon decay of the Higgs boson is presented based on pp collision data recorded by ATLAS during Run 3 of the Large Hadron Collider, corresponding to an integrated luminosity of 165 fb-1 at √s = 13.6 TeV. To enhance the sensitivity, the results are combined with those from Run 2. An excess of events over the background is observed with a significance of 3.4σ (2.5σ expected). The best-fit signal strength is μ = 1.4 ± 0.4. This result provides evidence for the H → μμ decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions. © 2025 CERN, for the ATLAS Collaboration.
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author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Colliding beam accelerators, Fermions, Hadrons, ATLAS detectors, Best fit, Direct probe, Higgs boson, Integrated luminosity, Large Hadron Collider, Large-hadron colliders, Second generation, Signal strengths, Yukawa couplings, article, boson, human, Bosons
in
Physical Review Letters
volume
135
issue
23
article number
231802
publisher
American Physical Society
external identifiers
  • scopus:105024968958
  • pmid:41418209
ISSN
0031-9007
DOI
10.1103/gzdh-p159
language
English
LU publication?
yes
id
be65f15a-7a68-4b5d-8964-6d60a30513d5
date added to LUP
2026-04-10 09:22:14
date last changed
2026-04-11 03:36:20
@article{be65f15a-7a68-4b5d-8964-6d60a30513d5,
  abstract     = {{A search for the dimuon decay of the Higgs boson is presented based on pp collision data recorded by ATLAS during Run 3 of the Large Hadron Collider, corresponding to an integrated luminosity of 165 fb<sup>-1</sup> at √s = 13.6 TeV. To enhance the sensitivity, the results are combined with those from Run 2. An excess of events over the background is observed with a significance of 3.4σ (2.5σ expected). The best-fit signal strength is μ = 1.4 ± 0.4. This result provides evidence for the H → μμ decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions. © 2025 CERN, for the ATLAS Collaboration.}},
  author       = {{Aad, G. and Åkesson, T.P.A. and Astrand, K.S.V. and Calic, L. and Doglioni, C. and Ekman, P.A. and Hedberg, V. and Herde, H. and Konya, B. and Lytken, E. and Poettgen, R. and Smirnova, O. and Sur, N. and Wallin, E.J. and Zwalinski, L.}},
  issn         = {{0031-9007}},
  keywords     = {{Colliding beam accelerators; Fermions; Hadrons; ATLAS detectors; Best fit; Direct probe; Higgs boson; Integrated luminosity; Large Hadron Collider; Large-hadron colliders; Second generation; Signal strengths; Yukawa couplings; article; boson; human; Bosons}},
  language     = {{eng}},
  number       = {{23}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review Letters}},
  title        = {{Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector}},
  url          = {{http://dx.doi.org/10.1103/gzdh-p159}},
  doi          = {{10.1103/gzdh-p159}},
  volume       = {{135}},
  year         = {{2025}},
}