1993/08/05 by Bengt-Åke Lindholm, Lindholm, Bengt-Åke
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9308228
8 pages, Latex, Preprint SNUTP-93-40
arxiv created 1993/08/05 · openalex publication_date 1993/08/05 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.