Year: 2000
Type: article
Abstract: We describe a ``neutrinogenesis'' mechanism whereby, in the presence of right-handed neutrinos with sufficiently small pure Dirac masses, $(B+L)$-violating sphaleron processes create the baryon asymmetry of the Universe, even when $B\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}L\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0$ initially. It is shown that the resulting neutrino mass constraints are easily fulfilled by the neutrino masses suggested by current experiments. We present a simple toy model which uses this mechanism to produce the observed baryon asymmetry of the Universe.
Source: Physical Review Letters
Authors: K. Dick, M. Lindner, M. Ratz, D. Wright
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2135062364