arXiv:2405.02899·v2·High Energy Physics — Phenomenology
Superposition of CP-Even and CP-Odd Higgs Resonances: Explaining the 95 GeV Excesses within a Two-Higgs Doublet Model
Rachid Benbrik (1)🇲🇦 · Mohammed Boukidi (1)🇲🇦 · Stefano Moretti (2) (3) ((1) Polydisciplinary Faculty, Laboratory of Fundamental and Applied Physics, Cadi Ayyad University, Sidi Bouzid, Safi, Morocco, (2) School of Physics and Astronomy, University of Southampton, United Kingdom, (3) Department of Physics and Astronomy, Uppsala University, Uppsala, Sweden)🇬🇧
Abstract
We propose an explanation for the observed excesses around 95 GeV in the di-photon and di-tau invariant mass distributions, as reported by the CMS collaboration at the Large Hadron Collider (LHC). These findings are complemented by a long-standing discrepancy in the invariant mass at the Large Electron-Positron (LEP) Collider. Additionally, the ATLAS collaboration has reported a corroborative excess in the di-photon final state within the same mass range, albeit with slightly lower significance. Our approach involves the superposition of CP-even and CP-odd Higgs bosons within the Type-III Two-Higgs Doublet Model (2HDM) to simultaneously explain these excesses at 1 Confidence Level (C.L.), while remaining consistent with current theoretical and experimental constraints.
Comments: 11 pages, 7 figures. References added. Matches published version in PRD