Investigation of Charged Higgs Boson in the Bottom and Top Quark Decay Channel at the FCC-hh

TL;DR

This paper evaluates the potential of the future FCC-hh collider to discover charged Higgs bosons in the bottom and top quark decay channels within the two Higgs doublet model, focusing on heavy charged Higgs detection.

Contribution

It provides a detailed analysis of the discovery prospects for charged Higgs bosons at FCC-hh, considering specific decay channels and collider parameters, extending previous studies to future collider capabilities.

Findings

Significant parts of the 2HDM parameter space are accessible at FCC-hh.

The study demonstrates the collider's potential to detect heavy charged Higgs bosons.

Analysis covers both initial and ultimate luminosity scenarios.

Abstract

After the recent discovery of a neutral Higgs boson with a mass about 125 GeV, we assess the extend of discovery potential of future circular hadron collider (FCC-hh) for a charged Higgs boson in the bottom and top quark decay channel. The charged Higgs boson can be produced through the pp->h^{-}t+X process with a subsequent decay h^{-}->b bar{t} channel. This decay channel is particularly important for studying the charged Higgs boson heavier than the top quark. We consider an extension of the standard model Higgs sector, namely two Higgs doublet model (2HDM), and perform a dedicated signal significance analysis to test this channel for the FCC-hh running at the center of mass energy of 100 TeV and the integrated luminosity of 1 ab^{-1} (initial) and 30 ab^{-1} (ultimate). We find that an important part of the parameter spaces of two Higgs doublet model are examinable at the FCC-hh.