Implications of the triplet-Majoron model for the supernova SN1987A

Details Implications of the triplet-Majoron model for the supernova SN1987A Implications of the triplet-Majoron model for the supernova SN1987A

Mar 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvd..37.1360a&link_type=abstract

Physical Review D (Particles and Fields), Volume 37, Issue 6, 15 March 1988, pp.1360-1367

Physics

9

Elementary Particle Processes

Scientific paper

We address several possible implications of the triplet-Majoron (TM) model for supernova physics, such as cooling and rapid deleptonization. We find that recent observations of the neutrinos from SN1987A are consistent with the TM model even if the νeνe-Majoron coupling constant is gee~=0.7×10-3 suggested by a recent ββ-decay experiment. We find specifically that deleptonization via νeνe-->χ0, followed by conversion to χ¯0, is unlikely to be important for this value of gee; however, if gee~=gμμ~=gττ, neutrino species equilibration via νeνe-->νμνμ and νeνe-->ντντ is likely to occur on a time scale of ~10-4 sec. Rapid equilibration, followed by decay in flight via νμ(ντ)-->ν¯e+χ0, can dramatically enhance the chance of observing neutronization neutrinos, even for g2μe and g2τe~=10-18. This last effect might be detected in nearby supernovas.

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