Same-sign W pair production in composite Higgs models

TL;DR

This paper explores the potential to detect doubly charged Higgs bosons decaying into same-sign W boson pairs within composite Higgs models, offering new constraints on their structure at the LHC.

Contribution

It analyzes the sensitivity of LHC searches to doubly charged Higgs bosons in composite models, highlighting differences from traditional triplet extensions and proposing new search strategies.

Findings

Significant constraints on $H^{\

Decays into same-sign W bosons provide a viable detection channel.

Potential to constrain composite Higgs models up to 800 GeV mass.

Abstract

Non-minimal composite Higgs scenarios can contain exotic Higgs states which, if getting observed at the Large Hadron Collider, will help to constrain the underlying UV structure of the strong dynamics. Doubly charged Higgs bosons are well-motivated scalar degrees of freedom in this context. Their phenomenology in typical composite scenarios can differ from well-established Higgs triplet extensions of the SM. Related search strategies are not necessarily adapted to such a scenario as a consequence. In this paper we discuss the sensitivity reach to doubly charged Higgs bosons with decays into pairs of same-sign $W$ bosons. While production cross sections are small, we show that significant constraints on $H^{\pm\pm}\to W^{\pm}W^{\pm}$ can be obtained, providing a new opportunity to constrain the potential composite structure of the TeV scale up to $m_{H^{\pm\pm}}\simeq 800$~GeV.