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Hadronic axion, baryogenesis and dark matter

Bengt-Åke Lindholm
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Abstract

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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Bengt-Åke Lindholm. 1993-08-05. Hadronic axion, baryogenesis and dark matter. https://arxiv.org/abs/hep-ph/9308228

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