Finding CP-violating Higgses

TL;DR

This paper explores the properties of Higgs bosons in a CP-violating two-Higgs-doublet model, deriving a sum rule that guarantees detection at colliders if kinematically accessible, regardless of mixing angles or other Higgs masses.

Contribution

It introduces a new sum rule linking Yukawa and Higgs-Z couplings, ensuring Higgs detectability at colliders in CP-violating scenarios.

Findings

Neutral Higgs bosons cannot evade detection if kinematically accessible.

Sum rule applies regardless of mixing angles and other Higgs masses.

Implications for Higgs searches at Tevatron and LHC are discussed.

Abstract

In a general two-Higgs-doublet model with CP violation in the Higgs sector, the three neutral physical Higgs bosons have no definite CP properties. A new sum rule relating Yukawa and Higgs-Z couplings implies that a neutral Higgs boson cannot escape detection at an e^+e^- collider if it is kinematically accessible in Z+Higgs, $b\bar b+$Higgs and $t\bar t+$Higgs production, irrespective of the mixing angles and the masses of the other neutral Higgs bosons. The implications of the sum rules for Higgs discovery at the Tevatron and LHC are briefly mentioned.