Investigation of charged Higgs boson in the bottom and top quark decay channel at the FCC-hh

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 (t) over bar 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), 3 ab(-1)(comparison with HL-LHC) and 30 ab(-1)(ultimate). We find that an important part of the parameter spaces of two Higgs doublet model is examinableat the FCC-hh. (C) 2021 Published by Elsevier B.V.

Automated summary

The study assesses the future discovery potential of a charged Higgs boson in the bottom and top quark decay channel at the Future Circular Collider, focusing on the extended Higgs sector and performing signal significance analysis. The results show that a significant portion of the parameter space in the two Higgs doublet model can be examined at the FCC-hh.