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 sqrt(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.
Evidence for the Dimuon Decay of the Higgs Boson in pp Collisions with the ATLAS Detector
G Chiodini;R Coluccia;Francesco De Santis;E Gorini;S Grancagnolo;FG Gravili;A Palazzo;M Primavera;S Spagnolo;A Ventura;
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 sqrt(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.File in questo prodotto:
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