On the Erasure and Regeneration of the Primordial Baryon Asymmetry by Sphalerons
arXiv:hep-ph/9304321 · doi:10.1103/PhysRevLett.71.2372
Abstract
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.
10 pp. LaTex (2 figures, included) UMN-TH-1201/93