CP violation including universal one-loop corrections and heterotic M-theory

TL;DR

This paper studies how universal one-loop threshold corrections influence CP violation phases in heterotic M-theory, revealing significant effects in weakly coupled regimes and bridging weak and strong coupling scenarios.

Contribution

It introduces the inclusion of universal moduli-dependent threshold corrections in the non-perturbative potential, enabling interpolation of CP phases across coupling regimes.

Findings

Universal threshold corrections significantly affect CP phases in weak coupling.

Interpolation between weakly and strongly coupled regimes is achieved.

CP violation phases can vary widely depending on threshold effects.

Abstract

CP violation by soft supersymmetry-breaking terms in orbifold compactifications is investigated. We include the universal part of the moduli-dependent threshold corrections in the construction of the non-perturbative effective potential due to gaugino-condensation. This allows interpolation of the magnitude of CP violating phases between the weakly and strongly coupled regimes. We find that the universal threshold corrections have a large effect on the CP violating phases in the weakly coupled regime.