Sharpening up the charged Higgs boson signature using Tau polarization at the LHC

Abstract

The opposite states of the τ polarization resulting from the charged Higgs boson and the W boson decays can be exploited to enhance the H^± signal in the inclusive 1-prong hadronic decay channel of τ. We suggest practical methods of sharpening up the H^± signature in the top quark decay at LHC using this idea. As a result one can carry on the charged Higgs boson search to within ~20 GeV of the parent top quark mass over the full parameter space of the MSSM.