Probing CP violating Higgs sectors via the precision measurement of coupling constants
Mayumi Aoki, Katsuya Hashino, Daiki Kaneko, Shinya Kanemura and, Mitsunori Kubota
TL;DR
This paper explores how future precision measurements of Higgs boson couplings at a Higgs factory can indirectly detect CP violation in two Higgs doublet models, distinguishing CP-violating from CP-conserving scenarios.
Contribution
It demonstrates that precise coupling measurements can identify CP violation in two Higgs doublet models, providing a new indirect detection method.
Findings
High-precision coupling measurements can distinguish CP violation.
CP-violating models show measurable deviations in couplings.
Future colliders can probe CP violation indirectly.
Abstract
We study how effects of the CP violation can be observed indirectly by precision measurements of Higgs boson couplings at a future Higgs factory such as the international linear collider. We consider two Higgs doublet models with the softly broken discrete symmetry. We find that by measuring the Higgs boson couplings very precisely we are able to distinguish the two Higgs doublet model with CP violation from the CP conserving one.
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