Explaining 95 GeV Anomalies in the 2-Higgs Doublet Model Type-I

TL;DR

This paper demonstrates how the 2-Higgs Doublet Model Type-I can account for observed anomalies around 95 GeV at the LHC and LEP, proposing specific configurations and benchmark points for further testing.

Contribution

It introduces a novel explanation for 95 GeV anomalies within the 2HDM Type-I, detailing two configurations and providing benchmark points for experimental validation.

Findings

The 2HDM Type-I can explain 95 GeV excesses in collider data.

Two configurations of the model successfully reproduce the anomalies.

Benchmark points are proposed for future phenomenological studies.

Abstract

We show how the 2-Higgs Doublet Model (2HDM) Type-I can explain some excesses recently seen at the Large Hadron Collider (LHC) in $\gamma\gamma$ and $\tau^+\tau^-$ final states in turn matching Large Electron Positron (LEP) data in $b\bar b$ signatures, all anomalies residing around 95 GeV. The explanation to such anomalous data is found in the aforementioned scenario when in inverted mass hierarchy, in two configurations: i) when the lightest CP-even Higgs state is alone capable of reproducing the excesses; ii) when a combination of such a state and the CP-odd Higgs boson is able to do so. To test further this scenario, we present some Benchmark Points (BPs) of it amenable to phenomenological investigation.