Probing $W^\prime_L WH$ and $W^\prime_R W H$ Interaction at LHC

TL;DR

This paper investigates how to distinguish between right-handed and left-handed $W^\prime$ bosons interacting with Higgs at the LHC by analyzing angular distributions and asymmetries in specific decay processes.

Contribution

It introduces a novel forward-backward asymmetry method to differentiate $W_R^\prime$ and $W_L^\prime$ interactions with the Higgs in LHC experiments.

Findings

$A_{FB}$ can reach 0.03 for $W_R^\prime$ and -0.07 for $W_L^\prime$ at 14 TeV.

The angular distribution analysis effectively distinguishes $W^\prime$ chiralities.

Background suppression techniques enhance the signal detection.

Abstract

Many new physics models predict the existence of TeV-scale charged gauge boson $W^\prime$ together with Higgs boson(s). We study the $W^\prime WH$ interaction and explore the angular distribution of charged lepton to distinguish $W_R^\prime WH$ from $W_L^\prime WH$ in $pp\to HW\to b \bar b l \nu$ process at the LHC. It is found that a new type forward-backward asymmetry($A_{FB}$) relating to the angle between the direction of the charged lepton in $W$ rest frame and that of the reconstructed $W^\prime$ in laboratory frame is useful to investigate the properties of $W^\prime W H$ interaction. We analyze the Standard Model backgrounds and develop a set of cuts to highlight the signal and suppress the backgrounds at LHC. We find that $A_{FB}$ can reach 0.03(-0.07) for $W_R^\prime$($W_L^\prime$) production at $\sqrt{S}=14$ TeV.