Bounds on the neutrino magnetic moment from SN 1987 A

Details Bounds on the neutrino magnetic moment from SN 1987 A Bounds on the neutrino magnetic moment from SN 1987 A

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phlb..346..312g&link_type=abstract

Physics Letters B, v. 346, p. 312-316

Physics

10

Elsevier: Neutrino Magnetic Moment, Sn 1987 A, Sterile Neutrinos, Strange Matter, Pion Condensation

Scientific paper

We examine the emission of wrong helicity neutrinos from SN 1987 A due to neutrino magnetic moment (μν). We consider the case when the core of nascent neutron star is on the verge of pion condensation. The relevant processes are the p + π- -> n + νL,R νL,R and πνL (νR) -> πνR (ν)L). We have also studied the case where the core is assumed to have undergone a phase transition to quark matter. The important process here is q + νL (νR) -> q + νR (νL). By imposing a bound on νR luminosity, we get a limit on μν <~ (0.3-0.05) × 10-12 μB depending on the temperature and composition of the core.

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