Mu-tau neutrino refraction and collective three-flavor transformations in supernovae

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.065024· OSTI ID:21249877

Esteban-Pretel, Andreu; Pastor, Sergio; Tomas, Ricard ^[1]; Raffelt, Georg G ^[2]; Sigl, Guenter ^[3]

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1. Institut de Fisica Corpuscular, CSIC-Universitat de Valencia, Ed. Instituts d'Investigacio, Ap. correus 22085, 46071 Valencia (Spain)
2. Max-Planck-Institut fuer Physik, Werner-Heisenberg-Institut, Foehringer Ring 6, 80805 Muenchen (Germany)
3. II. Institut fuer theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany) and APC (AstroParticules et Cosmologie), 10, rue Alice Domon et Leonie Duquet, 75205 Paris Cedex 13 (France)

We study three-flavor collective neutrino transformations in the dense-neutrino region above the neutrino sphere of a supernova core. We find that two-flavor conversions driven by the atmospheric mass difference and the 13-mixing angle capture the full effect if one neglects the second-order difference between the {nu}{sub {mu}} and {nu}{sub {tau}} refractive index. Including this 'mu-tau matter term' provides a resonance at a density of {rho}{approx_equal}3x10{sup 7} g cm{sup -3} that typically causes significant modifications of the overall {nu}{sub e} and {nu}{sub e} survival probabilities. This effect is surprisingly sensitive to deviations from maximal 23-mixing, being different for each octant.

• OSTI ID: 21249877
• Journal Information: Physical Review. D, Particles Fields, Vol. 77, Issue 6; Other Information: DOI: 10.1103/PhysRevD.77.065024; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
CAPTURE
CONVERSION
DENSITY
ELECTRON NEUTRINOS
FLAVOR MODEL
MASS DIFFERENCE
MESONS
MODIFICATIONS
MUON NEUTRINOS
PROBABILITY
REFRACTION
REFRACTIVE INDEX
SUPERNOVAE
TAU NEUTRINOS
TRANSFORMATIONS
WEINBERG ANGLE