KK Higgs produced in association with a top quark pair in the bulk RS Model

TL;DR

This paper proposes a search strategy for detecting the first KK Higgs boson in the bulk RS model at the LHC, focusing on its production with top quark pairs and decay into boosted top pairs, potentially revealing masses up to 1.2 TeV.

Contribution

It introduces a novel search method for the KK Higgs in the bulk RS model, emphasizing boosted decay products to enhance detection sensitivity at the LHC.

Findings

KK Higgs masses up to 1.2 TeV could be explored at high LHC luminosities.

Boosted decay products improve the search sensitivity for the KK Higgs.

Beyond 1.2 TeV, the KK Higgs detection may require future colliders.

Abstract

We present a search strategy for the first Kaluza-Klein (KK) mode of the Higgs boson in the framework of the Randall-Sundrum (RS) model with a deformed metric. We study the production of this massive excitation in association with a ttbar pair at the Large Hadron Collider (LHC). The KK Higgs primarily decays into a boosted ttbar final state and we then end up with an interesting four-top final state of which two are boosted. The boosted products in the final state improve the sensitivity for the search of the KK Higgs in this channel whose production cross-section is otherwise rather small. Our results suggest that masses of the KK Higgs resonance upto about 1.2 TeV may be explorable at the highest planned luminosities of the LHC. Beyond this mass, the KK Higgs cross-section is too tiny for it to be explored at the LHC and may be possible only at a future higher energy collider.