Baryogenesis at the QCD Scale

Details Baryogenesis at the QCD Scale Baryogenesis at the QCD Scale

1999-03-11

arxiv.org/abs/hep-ph/9903318v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, based on a plenary talk by R.B. at SEWM-98 and an invited talk by A.Z. at COSMO-98, to be publ. in the proceedings o

Scientific paper

We propose a new mechanism for explaining the observed asymmetry between matter and antimatter, based on nonperturbative physics at the QCD scale. Our mechanism is a charge separation scenario, making use of domain walls separating the recently discovered long-lived metastable vacua from the lowest energy vacuum. The walls acquire a fractional negative baryon charge, leaving behind a compensating positive baryon charge in the bulk. The regions of metastable vacuum bounded by walls ("B-shells") will contribute to the dark matter of the Universe.

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