Search for $thj$ production with $h\rightarrow \gamma\gamma$ at the LHC in the littlest Higgs model with T-parity

TL;DR

This study investigates the potential to detect the associated production of a Higgs boson and a single top quark in the littlest Higgs model with T-parity at the 14 TeV LHC, focusing on the Higgs to gamma gamma decay channel.

Contribution

It provides the first detailed analysis of the $thj$ channel in the littlest Higgs model with T-parity, estimating the exclusion limits on the top partner mass at the LHC.

Findings

Can exclude top partner mass up to 805 GeV (case A) and 857 GeV (case B) at 2σ confidence level.

Uses fast detector simulation to evaluate the search sensitivity.

Highlights the potential of the $h ightarrow \gamma\gamma$ channel for new physics searches.

Abstract

In the littlest Higgs model with T-parity, we study associated production of a Higgs and a single top quark at the 14 TeV LHC. We focus on the Higgs to two photons decay and the semileptonic top decay channel. By performing a fast detector simulation, we find that the $thj$ search in the selected channel can excluded the top partner mass $m_{T_{+}}$ up to 805 (857) GeV for case A (case B) at $2\sigma$ confidence level at 14 TeV LHC with the integrated luminosity $L= 3 \rm ab^{-1}$.