The Hadronic Tau Decay Signature of a Heavy Charged Higgs Boson at LHC

TL;DR

This paper proposes a method to detect heavy charged Higgs bosons at the LHC using hadronic tau decay signatures, exploiting tau polarization and transverse mass to identify signals up to 600 GeV with minimal background.

Contribution

It introduces a novel approach combining tau polarization and transverse mass analysis to improve heavy charged Higgs boson detection at the LHC.

Findings

Potential to detect charged Higgs up to 600 GeV

Background-free environment for signal detection

Transverse mass distribution estimates Higgs mass accurately

Abstract

The hadronic tau decay channel offers by far the best signature for heavy charged Higgs boson search at the LHC in the large $\tan\beta$ region. By exploiting the distinct polarization of the tau and its large transverse mass, along with the accompanying missing--$p_T$, one can probe for a charged Higgs boson up to a mass of about 600 GeV in an essentially background-free environment. The transverse mass distribution of the tau jet also provides a fairly unambiguous estimate of the charged Higgs boson mass.