Search for light gauge boson $Z^{}_{μτ}$ via ${t}\bar{t}h^{}_{1}$ production at LHC
We consider the production of the new gauge boson $Z^{}_{μτ}$ predicted by the ${U(1)}_{L^{}_μ - L^{}_τ}$ model via SM-like Higgs boson $h^{}_{1}$ decaying in the ${t}\bar{t}h^{}_{1}$ production at LHC. Considering the current constraints on the relevant free parameters, we calculate its production cross section and further investigate the possibility of detecting $Z^{}_{μτ}$ through the process $pp\to{t(\to{bjj})}\bar{t}(\to{\bar{b}l^{-}\barν_{l}})h_{1}(\to{Z_{μτ}Z_{μτ}})\to{b\bar{b}jjl^{-}\barν_{l}}+/\!\!\!\!E_{T}$ at LHC. We find that $Z^{}_{μτ}$ might be detected via this process at LHC with high integrated luminosity.
hep-ph↗