CP Violation in the Higgs Sector of the MSSM

TL;DR

This paper investigates how loop effects can induce CP violation in the Higgs sector of the MSSM, affecting electric dipole moments and collider phenomenology.

Contribution

It demonstrates that loop-induced soft-CP-violating interactions can significantly break CP invariance in the MSSM Higgs potential, with implications for EDM constraints and collider signals.

Findings

Loop effects can cause sizable CP violation in the Higgs sector.

Two-loop contributions impact electron and neutron EDMs.

Phenomenological implications for current and future colliders.

Abstract

Recently, it has been found that the tree-level CP invariance of the Higgs potential in the MSSM can be sizeably broken by loop effects due to soft-CP-violating trilinear interactions involving third generation scalar quarks. These soft-CP-violating couplings may be constrained by considering new two-loop contributions to the electron and neutron EDMs. The phenomenological consequences of such a minimal supersymmetric scenario of explicit CP violation at present and future colliders are briefly discussed.