Distinguishing charged Higgs bosons from different representations at the LHC

Abstract

Extending the Standard Model (SM) scalar sector via one or multiple Higgs field(s) in higher representation brings one or more charged Higgs bosons in the spectrum. Some of these gauge representations with appropriate hypercharge can bring up doubly charged Higgs boson and can be easily distinguished from the existing models with only singly charged Higgs boson. In this study we focus on distinguishing the singly charged Higgs bosons from different representations, viz. doublets and triplets of $SU(2{)}_L$ gauge group. We consider a supersymmetric extension of SM with a gauge singlet and $SU(2{)}_L$ triplet with $Y=0$ as a benchmark scenario with the possibility of rich phenomenology due to existence of light pseudoscalar for $Z_3$ symmetric superpotential. A detailed collider simulation considering all the SM backgrounds has been carried out in order to classify the final states which are favourable to charged Higgs boson from one particular representation than others. We show that such different representations can be probed an distinguished via looking at single charged Higgs boson phenomenology at the LHC with 14 TeV center of mass energy within $\sim 50$ fb${}^{-1}$ of integrated luminosity.

28 pages, 14 figures, 14 tables. updated version with references reordered

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• Discerning Singlet and Triplet scalars at the electroweak phase transition and Gravitational Wave
• Searching for a charged Higgs boson with both $H^{\pm }{W}^{\mp }Z$ and $H^{\pm }tb$ couplings at the LHC
• Phenomenology of Higgs bosons in inverse seesaw model with Type-X two Higgs doublet at the LHC
• Fingerprinting the contribution of colored scalars to the $H^{+}{W}^{-}Z(\gamma )$ vertex
• Impacts of multi-Higgs on the $\rho$ parameter, decays of a neutral Higgs to $WW$ and $ZZ$, and a charged Higgs to $WZ$