Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-05-02
AIP Conf.Proc.668:263-287,2003
Astronomy and Astrophysics
Astrophysics
RevTeX4, 25 pages, 5 figures, to appear in the "Proceedings of the Xth Brazilian School of Cosmology and Gravitation", M. Nove
Scientific paper
10.1063/1.1587102
In addition to the problem of galaxy formation, one of the greatest open questions of cosmology is represented by the existence of an asymmetry between matter and antimatter in the baryonic component of the Universe. We believe that a net lepton number for the three neutrino species can be used to understand this asymmetry. This also implies an asymmetry in the matter-antimatter component of the leptons. The existence of a nonnull lepton number for the neutrinos can easily explain a cosmological abundance of neutrinos consistent with the one needed to explain both the rotation curves of galaxies and the flatness of the Universe. Some propedeutic results are presented in order to attack this problem.
Lattanzi Massimiliano
Ruffini Remo
Vereshchagin Gregory
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