Supernova bound on keV-mass sterile neutrinos reexamined

Journal Article · Sun May 01 00:00:00 EDT 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.093014· OSTI ID:21541587

Raffelt, Georg G; Shun, Zhou ^[1]

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1. Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, D-80805 Muenchen (Germany)

Active-sterile neutrino mixing is strongly constrained for m{sub s} < or approx. 100 keV to avoid excessive energy losses from supernova cores. For smaller m{sub s}, matter effects suppress the effective mixing angle except for a resonant range of energies where it is enhanced. We study the case of {nu}{sub {tau}-{nu}s} mixing where a {nu}{sub {tau}-{nu}{tau}} asymmetry builds up due to the strong excess of {nu}{sub s} over {nu}{sub s} emission or vice versa, reducing the overall emission rate. In the warm dark matter range m{sub s} < or approx. 10 keV the mixing angle is essentially unconstrained.

• OSTI ID: 21541587
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 9; Other Information: DOI: 10.1103/PhysRevD.83.093014; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
ASYMMETRY
COSMIC NEUTRINOS
EMISSION
ENERGY LOSSES
KEV RANGE 100-1000
LIMITING VALUES
MASS
MIXING
NONLUMINOUS MATTER
SUPERNOVAE
TAU NEUTRINOS
WEINBERG ANGLE
BINARY STARS
COSMIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
ERUPTIVE VARIABLE STARS
FERMIONS
HEAVY LEPTONS
IONIZING RADIATIONS
KEV RANGE
LEPTONS
LOSSES
MASSLESS PARTICLES
MATTER
NEUTRINOS
RADIATIONS
STARS
VARIABLE STARS