Resonances all over the place?

TL;DR

This paper interprets multiple excesses observed at different energies as potential signals of CP-even scalars, proposing a minimal extended model involving doubly-charged scalars to explain these anomalies.

Contribution

It introduces a novel minimal extension of the Standard Model with doubly-charged scalars to account for observed excesses at 95GeV, 650GeV, and 320GeV.

Findings

Combined significance for 650GeV excess reaches 4σ.

Proposed model fits multiple excesses simultaneously.

Numerical examples illustrate the model's viability.

Abstract

We provide a possible interpretation of excesses reported by ATLAS and CMS at around 95GeV, 650GeV and possibly 320GeV, in terms of CP-even scalars. In particular, the combined {\sl global} statistical significances of independent indications for a 650GeV object reach the $4\sigma$ level! While this seems sufficient incentive for a further investigation, this object cannot be fitted in tradional singlet or doublet extensions of the Standard Model. It requires by itself a larger extension with doubly-charged scalars, that naturally fits the two other excesses on top of the SM-like 125~GeV Higgs. We describe the minimal model and give some numerical illustrations.