Cosmological Bounds to the Magnetic Moment of Heavy Tau Neutrinos

Details Cosmological Bounds to the Magnetic Moment of Heavy Tau Neutrinos Cosmological Bounds to the Magnetic Moment of Heavy Tau Neutrinos

1996-03-12

arxiv.org/abs/astro-ph/9603051v1

Phys.Rev. D54 (1996) 1374-1378

Astronomy and Astrophysics

Astrophysics

uuencoded submission which unpacks into a 14-page LaTeX file and four postscript figures, figi.ps (i=1 to 4), included using p

Scientific paper

10.1103/PhysRevD.54.1374

The magnetic moment of tau neutrinos in the MeV mass range may be large enough to modify the cosmological freeze-out calculation and determine the tau-neutrino relic density. In this paper we revisit such a possibility. We calculate the evolution and freeze-out of the tau neutrino number density as a function of its mass and magnetic moment. We then determine its relic density, then calculate its effect upon primordial nucleosynthesis including previously neglected effects.

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