Kaluza-Klein gluon searches using the three-b-jet decay channel at the Large Hadron Collider

TL;DR

This paper investigates the potential to detect Kaluza-Klein gluons at the LHC through three-b-jet final states, demonstrating that significant signals could be observed with sufficient data and specific model parameters.

Contribution

It introduces a novel analysis method for KK gluon detection focusing on three-b-jet channels in a warped extra dimension model at the LHC.

Findings

Significance exceeds 5-sigma with 10 fb^{-1} of data for certain parameters.

Detection prospects improve with higher integrated luminosity, up to 100 fb^{-1}.

The three-b-jet channel is promising for KK gluon searches.

Abstract

We study observability of a Kaluza-Klein (KK) excitation of a gluon in a five-dimensional model with a warped geometry at the Large Hadron Collider. In this model, the Standard Model fields reside in the bulk and the third generation quarks couple to the KK gluon strongly. We focus on the processes including three b-quarks as a final state where the first KK gluon propagates as an intermediate state. We evaluate a significance of those processes by taking account of kinematical cuts and a detector efficiency at the Large Hadron Collider and find that the significance is lager than 5-sigma with the integrated luminosity of 10 (100) fb^{-1} for a certain range of parameters of the model.