Speaker
Description
This poster presents a search for lepton-flavor violating decays of the Higgs boson to an electron-muon pair using data from proton-proton collisions at √s = 13 TeV collected by the CMS experiment at the LHC. The dataset corresponds to an integrated luminosity of 138 fb−1. No significant excess of events is observed for the 125 GeV Higgs, leading to the most stringent upper limits so far on the branching fraction B(H → eµ) at 95% confidence level, with an observed (expected) limit of 4.4 (4.7) × 10−5. Upper limits on the cross-section of pp->X->eµ are set on the mass-range of X of 110-160 GeV. Here, an excess of events is observed at an electron-muon invariant mass of approximately 146 GeV with a local (global) significance of 3.8 (2.8) standard deviations. These results provide valuable insights into lepton-flavor violating Higgs decays and contribute to our understanding of the Higgs sector and potential new physics beyond the Standard Model.
| Collaboration / Activity | CMS |
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