Search for the intermediate Mass Higgs Signal at TeV $eγ$ colliders

Abstract

The intermediate mass Higgs (IMH) can be abundantly produced through the process $e^-γ\rightarrow W^-Hν$ at TeV $e^-γ$ colliders, which are realized by the laser back-scattering method. We search for the signature of $W^-H \rightarrow (jj)(b\bar b)$ plus missing transverse momentum, with and without considering the $b$-tagging. We also analyse all the potential backgrounds from $e^-γ\rightarrow W^-Zν,\,W^-W^+e^-,\,ZZe^-,\, \bar t bν$ and $t\bar t e^-$. With our selective acceptance cuts these backgrounds are reduced to a manageable level. We find that for the entire intermediate mass range 60 -- 150~GeV the Higgs discovery should be viable. We also present detail formulas for the helicity amplitudes of these processes.