Cosmological bounds to the magnetic moment of heavy tau-neutrinos
Journal Article
·
· Physical Review. D, Particles Fields
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
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.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1155590
- Report Number(s):
- UUITP-5-96; PRVDAQ
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 54, Issue 2; ISSN 0556-2821
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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