Cosmological bounds to the magnetic moment of heavy tau-neutrinos

Grasso, Dario; Kolb, Edward W.

doi:10.1103/PhysRevD.54.1374

Title: Cosmological bounds to the magnetic moment of heavy tau-neutrinos

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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.

Authors:

Grasso, Dario ^[1]; Kolb, Edward W. ^[1]

Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Publication Date:: Fri Mar 01 00:00:00 EST 1996

Research Org.:: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1155590

Report Number(s):: UUITP-5-96
Journal ID: ISSN 0556-2821; PRVDAQ

DOE Contract Number:: AC02-07CH11359

Resource Type:: Journal Article

Journal Name:: Physical Review. D, Particles Fields

Additional Journal Information:: Journal Volume: 54; Journal Issue: 2; Journal ID: ISSN 0556-2821

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats


                    Grasso, Dario, and Kolb, Edward W. Cosmological bounds to the magnetic moment of heavy tau-neutrinos.  United States: N. p., 1996. 
        Web.  doi:10.1103/PhysRevD.54.1374.

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                    Grasso, Dario, & Kolb, Edward W. Cosmological bounds to the magnetic moment of heavy tau-neutrinos.  United States.  https://doi.org/10.1103/PhysRevD.54.1374

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                    Grasso, Dario, and Kolb, Edward W. 1996.  
        "Cosmological bounds to the magnetic moment of heavy tau-neutrinos".  United States.  https://doi.org/10.1103/PhysRevD.54.1374.  https://www.osti.gov/servlets/purl/1155590.

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@article{osti_1155590,

  title        = {Cosmological bounds to the magnetic moment of heavy tau-neutrinos},

  author       = {Grasso, Dario and Kolb, Edward W.},

  abstractNote = {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.},

  doi          = {10.1103/PhysRevD.54.1374},

  url          = {https://www.osti.gov/biblio/1155590},
  journal      = {Physical Review. D, Particles Fields},

  issn         = {0556-2821},

  number       = 2,

  volume       = 54,

  place        = {United States},

  year         = {Fri Mar 01 00:00:00 EST 1996},

  month        = {Fri Mar 01 00:00:00 EST 1996}

}

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