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

Abstract

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.

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

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Cited by in corpus (13)

• The Next-to-Minimal Supersymmetric Standard Model
• The Next-to-Minimal Supersymmetric extension of the Standard Model reviewed
• Evading the cosmological domain wall problem
• Destabilising Divergences in the NMSSM
• Electroweak Phase Transition in the munuSSM
• Neutral Higgs sector of the next-to-minimal supersymmetric standard model with explicit CP violation
• Gravitational waves from domain walls in the next-to-minimal supersymmetric standard model
• Spontaneous CP Violation and Higgs Masses in the Next-to-Minimal Supersymmetric Model
• Ferromagnetic Domain Wall and Primeval Magnetic Field
• Status and prospects of the nMSSM after LHC Run-1
• Effect of pre-existing baryon inhomogeneities on the dynamics of quark-hadron transition
• Minimal Electroweak Baryogenesis via Domain Walls
• Right-handed neutrinos, domain walls and tadpoles in the superstring inspired $\mu \nu$SSM