Search for $W^{\prime }$ signal via $t{W}^{\prime }$ associated production at LHC

Abstract

A variety of new physics models predict the existence of extra charged gauge bosons ($W^{\prime }$). It is verified that $W^{\prime }$ and top quark associated production is a promising process to search for $W^{\prime }$ signal at the LHC. We study the collider signatures of multi-jets$+$lepton$+\met$ by reconstructing the $t{W}^{\prime }$ intermediate state through the decay modes of $W^{\prime }\to tb$, $W^{\prime }\to q{\bar{q}}^{\prime }$ and $W^{\prime }\to l\nu$ respectively. An angular distribution related to charged lepton and top quark moving direction is provided to distinguish alternative left-handed or right-handed chiral couplings of $W^{\prime }$ to quarks in the hadronic decay modes. The superiority on the search of $W^{\prime }$ is demonstrated in the leptonic decay channel for the left-handed type interaction, which is forbidden for the right-handed type interaction in the most theories. To be more realistic, the relevant standard model backgrounds are simulated. We adopt various kinematic cuts to suppress the backgrounds and collect the integral luminosity needed for the corresponding process detected at the LHC with $3\sigma$ sensitivity. We also provide a forward-backward asymmetry which is related to the chirality of $W^{\prime }$. The successive studies can shed light on the potential searching for $W^{\prime }$ signal as well as distinguishing typical new physics models.

References in corpus (22)

• A Large Mass Hierarchy from a Small Extra Dimension
• An Alternative to Compactification
• The Hierarchy Problem and New Dimensions at a Millimeter
• New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
• MadGraph 5 : Going Beyond
• (De)Constructing Dimensions
• Left-Right Symmetry at LHC
• General CP Violation in Minimal Left-Right Symmetric Model and Constraints on the Right-Handed Scale
• First Limits on Left-Right Symmetry Scale from LHC Data
• Probing Heavy-Light Neutrino Mixing in Left-Right Seesaw Models at the LHC
• Lepton Number Violation and W' Chiral Couplings at the LHC
• Search for W' bosons decaying to an electron and a neutrino with the D0 detector
• Search for the Production of Narrow tb Resonances in 1.9 fb-1 of ppbar Collisions at sqrt(s) = 1.96 TeV
• ATLAS search for a heavy gauge boson decaying to a charged lepton and a neutrino in pp collisions at sqrt(s) = 7 TeV
• Chiral Couplings of W' and Top Quark Polarization at the LHC
• Search for a W' boson decaying to a bottom quark and a top quark in pp collisions at sqrt(s) = 7 TeV
• Search for tb resonances in proton-proton collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Calculation of Associated Production of a Top Quark and a W' at the LHC
• Search for charge-asymmetric production of W' bosons in top pair + jet events from pp collisions at sqrt(s) = 7 TeV
• Search for new physics in final states with a lepton and missing transverse energy in pp collisions at the LHC
• Identify Charged Higgs Boson in $W^{\pm }{H}^{\mp }$ Associated Production at LHC
• Probing $W_L^{\prime }WH$ and $W_R^{\prime }WH$ Interaction at LHC

Cited by in corpus (1)

• Search for $W^{\prime }$ signal in single top quark production at LHC