Constraints on Dirac Neutrinos from SN 1987A

Details Constraints on Dirac Neutrinos from SN 1987A Constraints on Dirac Neutrinos from SN 1987A

1993-01-13

arxiv.org/abs/astro-ph/9301005v1

Phys.Lett. B317 (1993) 119-124

Astronomy and Astrophysics

Astrophysics

8 pages, 5 Figures (available on request), FERMILAB-Pub-92/381-A

Scientific paper

10.1016/0370-2693(93)91580-G

The Livermore Supernova Explosion Code was used to calculate the effect of a massive Dirac neutrino on neutrino emission from SN 1987A in a fully self-consistent manner. Spin-flip interactions lead to the copious emission of sterile, right-handed neutrinos and cool the core faster than the observed neutrino emission time for Dirac masses exceeding about 3$\,$keV. This limit is relaxed to $7\,$keV if pion emission processes in the core are neglected. These limits are compared with the previous less stringent limits of Burrows et al.

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