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

ATLAS Collaboration; S. Alderweireldt; J.F. Allen; J.R. Curran; D. Duda; S. M. Farrington; Y. Gao; R.Y. González Andana; C. Jiang; C. Leonidopoulos; M. Firdaus M. Soberi; V. J.  Martin; L. Mijović; T. Qiu; J.M. Silva; A.L. Sopio; F. Ustuner; H. Watson; B.M. Wynne; Z. Xu

doi:10.1103/gzdh-p159

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

ATLAS Collaboration
, S. Alderweireldt
, J.F. Allen
, J.R. Curran
, D. Duda
, S. M. Farrington
, Y. Gao
, R.Y. González Andana
, C. Jiang
, C. Leonidopoulos
, M. Firdaus M. Soberi
, V. J. Martin
, L. Mijović
, T. Qiu
, J.M. Silva
, A.L. Sopio
, F. Ustuner
, H. Watson
, B.M. Wynne
, Z. Xu

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

A search for the dimuon decay of the Higgs boson is presented based on 𝑝⁢𝑝
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 3.4⁢𝜎(2.5⁢𝜎expected). The best-fit signal strength is 𝜇=1.4±0.4. This result provides evidence for the 𝐻→𝜇⁢𝜇 decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions.

Original language	English
Article number	231802
Pages (from-to)	1-24
Number of pages	24
Journal	Physical Review Letters
Volume	135
Issue number	23
Early online date	3 Dec 2025
DOIs	https://doi.org/10.1103/gzdh-p159
Publication status	Published - 5 Dec 2025

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10.1103/gzdh-p159Licence: Creative Commons: Attribution (CC-BY)

3 Finished
3 Active

Upgrade of the ATLAS detector at the LHC (2023-26)
Clark, P. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 31/03/27
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/04/23 → 30/09/26
Project: Research
Experimental Particle Physics at the University of Edinburgh
Leonidopoulos, C. (Principal Investigator)
Science and Technology Facilities Council
1/10/22 → 30/09/26
Project: Research

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ATLAS Collaboration, Alderweireldt, S., Allen, J. F., Curran, J. R., Duda, D., Farrington, S. M., Gao, Y., González Andana, R. Y., Jiang, C., Leonidopoulos, C., Soberi, M. F. M., Martin, V. J., Mijović, L., Qiu, T., Silva, J. M., Sopio, A. L., Ustuner, F., Watson, H., Wynne, B. M., & Xu, Z. (2025). Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector. Physical Review Letters, 135(23), 1-24. Article 231802. https://doi.org/10.1103/gzdh-p159

@article{58858465248643e68898aa1ed839634e,

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 𝑝⁢𝑝 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 3.4⁢𝜎(2.5⁢𝜎expected). The best-fit signal strength is 𝜇=1.4±0.4. This result provides evidence for the 𝐻→𝜇⁢𝜇 decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions.",

author = "\{ATLAS Collaboration\} and S. Alderweireldt and J.F. Allen and J.R. Curran and D. Duda and Farrington, \{S. M.\} and Y. Gao and \{Gonz{\'a}lez Andana\}, R.Y. and C. Jiang and C. Leonidopoulos and Soberi, \{M. Firdaus M.\} and Martin, \{V. J.\} and L. Mijovi{\'c} and T. Qiu and J.M. Silva and A.L. Sopio and F. Ustuner and H. Watson and B.M. Wynne and Z. Xu",

year = "2025",

month = dec,

day = "5",

doi = "10.1103/gzdh-p159",

language = "English",

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journal = "Physical Review Letters",

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ATLAS Collaboration, Alderweireldt, S, Allen, JF, Curran, JR, Duda, D , Farrington, SM , Gao, Y, González Andana, RY, Jiang, C, Leonidopoulos, C, Soberi, MFM, Martin, VJ , Mijović, L , Qiu, T, Silva, JM, Sopio, AL, Ustuner, F, Watson, H , Wynne, BM & Xu, Z 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, pp. 1-24. 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 - ATLAS Collaboration

AU - Alderweireldt, S.

AU - Allen, J.F.

AU - Curran, J.R.

AU - Duda, D.

AU - Farrington, S. M.

AU - Gao, Y.

AU - González Andana, R.Y.

AU - Jiang, C.

AU - Leonidopoulos, C.

AU - Soberi, M. Firdaus M.

AU - Martin, V. J.

AU - Mijović, L.

AU - Qiu, T.

AU - Silva, J.M.

AU - Sopio, A.L.

AU - Ustuner, F.

AU - Watson, H.

AU - Wynne, B.M.

AU - Xu, Z.

PY - 2025/12/5

Y1 - 2025/12/5

N2 - A search for the dimuon decay of the Higgs boson is presented based on 𝑝⁢𝑝 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 3.4⁢𝜎(2.5⁢𝜎expected). The best-fit signal strength is 𝜇=1.4±0.4. This result provides evidence for the 𝐻→𝜇⁢𝜇 decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions.

AB - A search for the dimuon decay of the Higgs boson is presented based on 𝑝⁢𝑝 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 3.4⁢𝜎(2.5⁢𝜎expected). The best-fit signal strength is 𝜇=1.4±0.4. This result provides evidence for the 𝐻→𝜇⁢𝜇 decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions.

U2 - 10.1103/gzdh-p159

DO - 10.1103/gzdh-p159

M3 - Article

SN - 0031-9007

VL - 135

SP - 1

EP - 24

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

Abstract

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Projects

Upgrade of the ATLAS detector at the LHC (2023-26)

Experimental Particle Physics at the University of Edinburgh

Experimental Particle Physics at the University of Edinburgh

Cite this