Additional Higgs Bosons near 95 and 650 GeV in the NMSSM

TL;DR

This paper explores the possibility that the NMSSM can simultaneously explain hints of additional Higgs bosons near 95 GeV and 650 GeV observed in collider experiments, fitting multiple experimental signals within current constraints.

Contribution

It demonstrates that the NMSSM can accommodate the experimental hints of Higgs bosons at 95 GeV and 650 GeV simultaneously within the 2 sigma level, considering latest constraints.

Findings

Hints for a 95 GeV Higgs in diphoton channels can be explained by NMSSM.

A 650 GeV resonance decaying into Higgs bosons is compatible with NMSSM.

Both phenomena can be fitted within the current experimental constraints.

Abstract

Hints for an additional Higgs boson with a mass of about 95 GeV originate from LEP and searches in the diphoton channel by CMS and ATLAS. A search for resonant production of SM plus BSM Higgs bosons in the diphoton plus bb channel by CMS showed some excess for a 650 GeV resonance decaying into the SM Higgs plus a 95 GeV Higgs boson. We investigate whether these phenomena can be interpreted simultaneously within the NMSSM subject to the latest constraints on couplings of the SM Higgs boson, on extra Higgs bosons from the LHC, and on dark matter direct detection cross sections. We find that the hints for a 95 GeV Higgs boson in the diphoton channel by CMS and ATLAS and in the diphoton plus bb channel by CMS can be fitted simultaneously within the 2 sigma level.