Primordial Baryon Asymmetry and Sphalerons

Abstract

I show that a cosmological baryon asymmetry generated at the GUT scale is in general safe against washout due to sphalerons and generic $B$- or $L$-violating effects. This result is mainly due to the (almost) conserved number of right-handed electrons at high temperatures $T \gsim {\cal O}(10) $ TeV, but also the mass corrections, in particular the thermal masses of leptons act as the protector of the primordial baryon asymmetry.

4 pages, Latex, uses espcrc2.sty, Talk at the Conference ``Trends in Particle Astrophysics'' Stockholm, Sweden, Sept. 22-25, 1994.

References in corpus (5)

• Progress in Electroweak Baryogenesis
• On the Baryon, Lepton-Flavour and Right-Handed Electron Asymmetries of the Universe
• Strong Sphalerons and Electroweak Baryogenesis
• On the Erasure and Regeneration of the Primordial Baryon Asymmetry by Sphalerons
• Protecting the Baryon Asymmetry with Thermal Masses

Cited by in corpus (2)

• Electroweak Baryon Number Non-Conservation in the Early Universe and in High Energy Collisions
• Experimental and Theoretical Evidence for Extended Particle Models