The $s$-channel Charged Higgs in the Fully Hadronic Final State at LHC

TL;DR

This paper investigates the potential to detect heavy charged Higgs bosons in the s-channel single top production process at the LHC, demonstrating that the signal can be distinguished from background despite challenges.

Contribution

It introduces a method to observe heavy charged Higgs bosons as resonances in the fully hadronic final state at the LHC, expanding search strategies beyond current exclusions.

Findings

Charged Higgs signals can be extracted with significant confidence.

Detection is feasible across a wide MSSM parameter space.

Potential for discovery with existing LHC luminosities.

Abstract

With the current measurements performed by CMS and ATLAS experiments, the light charged Higgs scenario ($m_{H^{\pm}}$ $<$ 160 GeV), is excluded for most of the parameter space in the context of MSSM. However, there is still possibility to look for heavy charged Higgs boson particularly in the $s$-channel single top production process where the charged Higgs may appear as a heavy resonance state and decay to $t\bar{b}$. The production process under consideration in this paper is $pp \ra H^{\pm} \ra t\bar{b}~+~h.c.$, where the top quark decays to $W^{+}b$ and $W^{+}$ boson subsequently decays to two light jets. It is shown that despite the presence of large QCD and electroweak background events, the charged Higgs signal can be extracted and observed at a large area of MSSM parameter space ($m_{H^{\pm}}$,tan$\beta$) at LHC. The observability of charged Higgs is potentially demonstrated with 5$\sigma$ contours and $95\%$ confidence level exclusion curves at different integrated LHC luminosities assuming a nominal center of mass energy of $\sqrt{s}$ = 14 TeV.