Explaining the 96 GeV Di-photon anomaly in a generic 2HDM Type-III

Benbrik, Rachid, Boukidi, Mohammed, Moretti, Stefano and Semlali, Souad (2022) Explaining the 96 GeV Di-photon anomaly in a generic 2HDM Type-III. Physical Letter B, 832, [137245]. (doi:10.1016/j.physletb.2022.137245).

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Abstract

Motivated by results recently reported by the CMS Collaboration about an excess in the di-photon spectrum at about 96 GeV, especially when combined with another long-standing anomaly at the same value in the bb¯ invariant mass spectrum in four-jet events collected at LEP, we show that a possible explanation to both phenomena can be found at 1σ level in a generic 2-Higgs Doublet Model (2HDM) of Type-III in presence of a specific Yukawa texture, wherein Lepton Flavour Violating (LFV) (neutral) currents are induced at tree level. Bounds from Higgs data play a major role in limiting the parameter space of this scenario, yet we find solutions with m _H=125 GeV and m _h=96 GeV consistent with current theoretical and experimental bounds.

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Accepted/In Press date: 8 June 2022

e-pub ahead of print date: 16 June 2022

Published date: 10 September 2022

Additional Information: Funding Information: SM acknowledges support from the STFC Consolidated Grant ST/L000296/1 and is partially financed through the NExT Institute. The work of SS is supported in full by the NExT Institute . The work of RB and MB is supported by the Moroccan Ministry of Higher Education and Scientific Research MESRSFC and CNRST Project PPR/2015/6 . Publisher Copyright: © 2022 The Author(s)

Keywords: hep-ph