Hadronic axion, baryogenesis and dark matter

Details Hadronic axion, baryogenesis and dark matter Hadronic axion, baryogenesis and dark matter

1993-08-05

arxiv.org/abs/hep-ph/9308228v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, Latex, Preprint SNUTP-93-40

Scientific paper

We investigate the prospects of an extra global symmetry, added to the Standard Model in the context of baryogenesis. The $PQ$ symmetry is studied as an example. We show that the hadronic axion provides a protection of the B-asymmetry even if $B-L$=0 and that there are no limits on the neutrino masses. It is also shown that there is a crucial difference between the two possible invisible axion models. A connection between the baryon asymmetry and dark matter is also pointed out.

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