Nonstandard Higgs decays in the E(6)SSM

TL;DR

This paper explores how the lightest Higgs in the E6SSM can predominantly decay into dark matter particles, with implications for collider searches and the particle spectrum, including light inert charginos and neutralinos.

Contribution

It demonstrates that the SM-like Higgs in the E6SSM can mainly decay into dark matter, affecting decay branching ratios and search strategies.

Findings

Higgs decays into dark matter can dominate with 2-4% into SM particles.

Presence of light inert charginos and neutralinos below 200 GeV.

Higgs decay into leptons plus X may be crucial for detection.

Abstract

We study the nonstandard decays of the lightest Higgs state within the Exceptional Supersymmetric Standard Model (E6SSM). We argued that the SM--like Higgs boson can decay predominantly into dark matter particles while its branching ratios into SM particles varies from 2% to 4%. This scenario also implies the presence of other relatively light Inert chargino and neutralino states in the particle spectrum with masses below 200 GeV. We argue that in this case the decays of the lightest Higgs boson into l^{+} l^{-} + X may play an essential role in the Higgs searches.