Cosmological Bounds to the Magnetic Moment of Heavy Tau Neutrinos
arXiv:astro-ph/9603051 · doi:10.1103/PhysRevD.54.1374
Abstract
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.
uuencoded submission which unpacks into a 14-page LaTeX file and four postscript figures, figi.ps (i=1 to 4), included using psfig
Cited by in corpus (6)
- Neutrinos in cosmology
- Big Bang nucleosynthesis and physics beyond the Standard Model
- Probing Physics Beyond the Standard Model: Limits from BBN and the CMB Independently and Combined
- Neutrino Dispersion in Magnetized Media and Spin Oscillations in the Early Universe
- Majorana Neutrino Magnetic Moment and Neutrino Decoupling in Big Bang Nucleosynthesis
- On mixing angles and magnetic moment of heavy tau neutrino