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

G. Aad; T.P.A. Åkesson; K.S.V. Astrand; L. Calic; C. Doglioni; P.A. Ekman; V. Hedberg; H. Herde; B. Konya; E. Lytken; R. Poettgen; O. Smirnova; N. Sur; E.J. Wallin; L. Zwalinski; ATLAS Collaboration

doi:10.1103/gzdh-p159

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

G. Aad, T.P.A. Åkesson, K.S.V. Astrand, L. Calic, C. Doglioni, P.A. Ekman, V. Hedberg, H. Herde, B. Konya, E. Lytken, R. Poettgen, O. Smirnova, N. Sur, E.J. Wallin, L. Zwalinski, ATLAS Collaboration

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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.

Original language	English
Article number	231802
Journal	Physical Review Letters
Volume	135
Issue number	23
DOIs	https://doi.org/10.1103/gzdh-p159
Publication status	Published - 2025

Subject classification (UKÄ)

Subatomic Physics

Free 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

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Aad, G., Åkesson, T. P. A., Astrand, K. S. V., Calic, L., Doglioni, C., Ekman, P. A., Hedberg, V., Herde, H., Konya, B., Lytken, E., Poettgen, R., Smirnova, O., Sur, N., Wallin, E. J., Zwalinski, L., & ATLAS Collaboration (2025). Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector. Physical Review Letters, 135(23), Article 231802. https://doi.org/10.1103/gzdh-p159

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title = "Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector",

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. {\textcopyright} 2025 CERN, for the ATLAS Collaboration.",

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",

author = "G. Aad and T.P.A. {\AA}kesson and K.S.V. Astrand and L. Calic and C. Doglioni and P.A. Ekman and V. Hedberg and H. Herde and B. Konya and E. Lytken and R. Poettgen and O. Smirnova and N. Sur and E.J. Wallin and L. Zwalinski and \{ATLAS Collaboration\}",

year = "2025",

doi = "10.1103/gzdh-p159",

language = "English",

volume = "135",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "23",

}

Aad, G, Åkesson, TPA , Astrand, KSV , Calic, L, Doglioni, C, Ekman, PA, Hedberg, V , Herde, H , Konya, B , Lytken, E , Poettgen, R , Smirnova, O , Sur, N , Wallin, EJ, Zwalinski, L & ATLAS Collaboration 2025, 'Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector', Physical Review Letters, vol. 135, no. 23, 231802. https://doi.org/10.1103/gzdh-p159

TY - JOUR

T1 - Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector

AU - Aad, G.

AU - Åkesson, T.P.A.

AU - Astrand, K.S.V.

AU - Calic, L.

AU - Doglioni, C.

AU - Ekman, P.A.

AU - Hedberg, V.

AU - Herde, H.

AU - Konya, B.

AU - Lytken, E.

AU - Poettgen, R.

AU - Smirnova, O.

AU - Sur, N.

AU - Wallin, E.J.

AU - Zwalinski, L.

AU - ATLAS Collaboration

PY - 2025

Y1 - 2025

N2 - 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.

AB - 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.

KW - Colliding beam accelerators

KW - Fermions

KW - Hadrons

KW - ATLAS detectors

KW - Best fit

KW - Direct probe

KW - Higgs boson

KW - Integrated luminosity

KW - Large Hadron Collider

KW - Large-hadron colliders

KW - Second generation

KW - Signal strengths

KW - Yukawa couplings

KW - article

KW - boson

KW - human

KW - Bosons

U2 - 10.1103/gzdh-p159

DO - 10.1103/gzdh-p159

M3 - Article

C2 - 41418209

SN - 0031-9007

VL - 135

JO - Physical Review Letters

JF - Physical Review Letters

IS - 23

M1 - 231802

ER -

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

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Subject classification (UKÄ)

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