Density dependence of nuclear neutrino-pair production

Details Density dependence of nuclear neutrino-pair production Density dependence of nuclear neutrino-pair production

Nov 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvl..69.2627h&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 69, no. 18, p. 2627-2630.

Physics

2

Neutral Currents, Neutrinos, Pair Production, Electromagnetic Coupling, Gravitational Collapse, Particle Interactions, Relativistic Theory

Scientific paper

Nuclear decay via neutrino-pair production is found to have a large density dependence because of intermediate electromagnetic couplings to electrons. These are calculated in a relativistic random phase approximation. The decay rate for vector (Fermi) transitions producing electron type neutrino pairs can be enhanced by 100,000 or more at densities relevant for stellar collapse. Axial-vector (Gamow-Teller) transitions are not enhanced.

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