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Implications of a 17 keV neutrino for baryogenesis

Authors
Journal
Nuclear Physics B
0550-3213
Publisher
Elsevier
Publication Date
Volume
380
Issue
3
Identifiers
DOI: 10.1016/0550-3213(92)90257-c
Disciplines
  • Astronomy
  • Physics

Abstract

Abstract There is some experimental evidence for a 17 keV component of the electron neutrino, in the form of the recent observations of kinks in the beta-decay spectra of tritium, 14C, 35S and 63Ni. In this paper I show that most particle-physics models consistent with the 17 keV neutrino require a baryogenesis scale below ∼ 10 6 GeV. Furthermore, models with a 17 keV neutrino typically contain new sources of CP violation, and the cosmological baryon asymmetry could be generated by anomalous electroweak interactions during a first-order weak phase transition.

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