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 root(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 sigma (2.5 sigma expected). The best-fit signal strength is mu = 1.4 +- 0.4. This result provides evidence for the H -> mu mu decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions.

Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. ., et al. (2025). Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 135(23) [10.1103/gzdh-p159].

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

Aielli, G.;Camarri, P.;Cerrito, L.;De Sanctis, U.;Di Ciaccio, A.;Giuli, F.;
2025-01-01

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 root(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 sigma (2.5 sigma expected). The best-fit signal strength is mu = 1.4 +- 0.4. This result provides evidence for the H -> mu mu decay with ATLAS data and offers a direct probe of the Higgs-boson Yukawa coupling to second-generation fermions.
2025
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Rilevanza internazionale
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Esperti anonimi
Settore PHYS-01/A - Fisica sperimentale delle interazioni fondamentali e applicazioni
English
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Aad, G., Aakvaag, E., Abbott, B., Abdelhameed, S., Abeling, K., Abicht, N. ., et al. (2025). Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector. PHYSICAL REVIEW LETTERS, 135(23) [10.1103/gzdh-p159].
Aad, G; Aakvaag, E; Abbott, B; Abdelhameed, S; Abeling, K; Abicht, N ; Abidi, S ; Aboelela, M; Aboulhorma, A; Abramowicz, H; Abulaiti, Y; Acharya, B ;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/441864
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