BSM Higgs Production at a Muon Collider

TL;DR

This paper explores the production mechanisms of non-Standard Model heavy Higgs bosons in 2HDM at a muon collider, analyzing various channels and their potential to distinguish different model types.

Contribution

It provides a detailed analysis of Higgs production channels at a muon collider within 2HDM, highlighting the importance of both pair and single production mechanisms and their dependence on model parameters.

Findings

Pair production dominates above kinematic threshold.

Single production with heavy fermions is significant with enhanced Yukawa couplings.

Different 2HDM types can be distinguished at moderate and large tanβ.

Abstract

The potential of the non-Standard Model heavy Higgs bosons in 2HDM at a muon collider is studied. The pair production of the non-SM Higgs bosons via the universal gauge interactions is the dominant mechanism once above the kinematic threshold. On the other hand, single Higgs boson production associated with a pair of heavy fermions is also important in the parameter region with enhanced Yukawa couplings. Both $\mu^+\mu^-$ annihilation channels and Vector Boson Fusion processes are considered, as well as radiative return $s$-channel production. Different types of 2HDMs can also be distinguishable for moderate and large values of $\tan\beta$.