Associated production of Higgs bosons and heavy quarks at photon colliders

TL;DR

This paper investigates the production of Higgs bosons with heavy quarks at photon colliders within the MSSM, showing potential for precise Yukawa coupling measurements through photon-photon interactions.

Contribution

It analyzes Higgs-heavy quark associated production at photon colliders in the MSSM, highlighting a method less affected by Higgs resonances for Yukawa coupling determination.

Findings

Cross sections can reach ~1.0 fb or higher for certain parameters.

Photon colliders offer a sensitive way to measure Higgs-heavy quark Yukawa couplings.

Production mechanism is unaffected by Higgs resonance effects.

Abstract

The idea of fermion mass generation through Yukawa couplings between Higgs bosons and fermions may be tested by their associated production at future linear colliders (LC). We study the production mechanism in the minimal supersymmeric standard model at photon colliders that can be realized by the laser back-scattering technique at the LC. We find that the cross sections for the production of the light Higgs-top pair, heavy Higgs-bottom pair and pseudoscalr Higgs-bottom pair can reach the level of \sim 1.0 fb or higher for phenomenologically favoured values of the parameters in the Higgs sector. Since this mechanism is not affected by the appearance of Higgs resonances as in electron collisions, it may provide a more sensitive way to determine the Yukawa couplings between Higgs bosons and heavy quarks.