Probing $W_L^{\prime }WH$ and $W_R^{\prime }WH$ Interaction at LHC

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 $W^{\prime }WH$ 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.

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