Protecting the Primordial Baryon Asymmetry From Erasure by Sphalerons

Details Protecting the Primordial Baryon Asymmetry From Erasure by Sphalerons Protecting the Primordial Baryon Asymmetry From Erasure by Sphalerons

1994-01-05

arxiv.org/abs/hep-ph/9401208v1

Phys.Rev.D49:6394-6409,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

41 pp., 4 latex figures included and 3 uuencoded or postscript figures available by request, UMN-TH-1213-93

Scientific paper

10.1103/PhysRevD.49.6394

If the baryon asymmetry of the universe was created at the GUT scale,
sphalerons together with exotic sources of $(B-L)$-violation could have erased
it, unless the latter satisfy stringent bounds. We elaborate on how the small
Yukawa coupling of the electron drastically weakens previous estimates of these
bounds.

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