1993/11/24 by Kiwoon Choi
Physics and Astronomy · #Black Holes and Theoretical Physics #Quantum Chromodynamics and Particle Interactions #Quantum Mechanics and Non-Hermitian Physics #hep-ph
paper · pdf · doi:10.1103/physrevlett.72.1592
published as Phys.Rev.Lett.72:1592-1595,1994 · 15pages, Latex, SNUTP 93-85
arxiv created 1993/11/24 · openalex publication_date 1994/03/14 · arxiv updated 2010/11/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We examine the possibility of small CP-violating supersymmetry (SUSY) phases in string-inspired supergravity models in which supersymmetry is broken by the auxiliary components of the dilaton and moduli. It is found that the SUSY phases can be suppressed by a small factor governing the breakdown of the approximate Peccei-Quinn symmetries nonlinearly realized for the moduli superfields that participate in supersymmetry breaking. In many cases, the symmetry breaking factors are exponentially small for moderately large values of the moduli, leading to small phase values in a natural way.