On the Erasure and Regeneration of the Primordial Baryon Asymmetry by Sphalerons

Details On the Erasure and Regeneration of the Primordial Baryon Asymmetry by Sphalerons On the Erasure and Regeneration of the Primordial Baryon Asymmetry by Sphalerons

1993-04-30

arxiv.org/abs/hep-ph/9304321v1

Phys.Rev.Lett.71:2372-2375,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pp. LaTex (2 figures, included) UMN-TH-1201/93

Scientific paper

10.1103/PhysRevLett.71.2372

We show that a cosmological baryon asymmetry generated at the GUT scale, which would be destroyed at lower temperatures by sphalerons and possible new B- or L-violating effects, can naturally be preserved by an asymmetry in the number of right-handed electrons. This results in a significant softening of previously derived baryogenesis-based constraints on the strength of exotic B- or L-violating interactions.

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