Baryogenesis from Domain Walls in the Next-to-Minimal Supersymmetric Standard Model

Details Baryogenesis from Domain Walls in the Next-to-Minimal Supersymmetric Standard Model Baryogenesis from Domain Walls in the Next-to-Minimal Supersymmetric Standard Model

1995-05-05

arxiv.org/abs/hep-ph/9505241v1

Phys.Rev. D52 (1995) 4371-4379

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, plain LaTeX, ps figures as uuencoded gzipped tar file

Scientific paper

10.1103/PhysRevD.52.4371

We consider the production of baryon number from collapsing domain walls, and in particular examine the magnitude of CP violation which is required in such schemes. Taking the conventional solution to the domain wall problem in the Next-to-Minimal Supersymmetric Standard Model as an example, we show that the observed baryon assymmetry of the universe may have been generated, even if the initial {\em explicit} CP violation in the Lagrangian were so small ({\em i.e.} gravitational) that it could never be experimentally detected. This is possible by having the {\em explicit} CP violation affect the way in which the walls collapse, rather than be responsible for the generation of baryon number directly. Net baryon number is created at the domain walls by the spontaneous breaking of CP.

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