A Higgs in the Warped Bulk and LHC signals

TL;DR

This paper explores the properties and detection strategies of the first KK Higgs mode in warped extra-dimensional models with a bulk Higgs, highlighting its decay into top quark pairs and potential observability at the LHC.

Contribution

It demonstrates that the KK Higgs can be gaugephobic, decay mainly into tar{t}, and proposes a search strategy using substructure techniques at the LHC.

Findings

KK Higgs mass in 1-2 TeV range

Higgs decays predominantly to tar{t}

Detectable at LHC with 300 fb^{-1}

Abstract

Warped models with the Higgs in the bulk can generate light Kaluza-Klein (KK) Higgs modes consistent with the electroweak precision analysis. The first KK mode of the Higgs (h_{1}) could lie in the 1-2 TeV range in the models with a bulk custodial symmetry. We find that the h_{1} is gaugephobic and decays dominantly into a t\bar{t} pair. We also discuss the search strategy for h_{1} decaying to t\bar{t} at the Large Hadron Collider. We used substructure tools to suppress the large QCD background associated with this channel. We find that h_{1} can be probed at the LHC run-2 with an integrated luminosity of 300 fb^{-1}.