Triggering collective oscillations by three-flavor effects

Journal Article · Thu Apr 01 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.073004· OSTI ID:21409457

Dasgupta, Basudeb; Raffelt, Georg G ^[1]; Tamborra, Irene ^[1]

---

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

Collective flavor transformations in supernovae, caused by neutrino-neutrino interactions, are essentially a two-flavor phenomenon driven by the atmospheric mass difference and the small mixing angle {theta}{sub 13}. In the two-flavor approximation, the initial evolution depends logarithmically on {theta}{sub 13} and the system remains trapped in an unstable fixed point for {theta}{sub 13}=0. However, any effect breaking exact {nu}{sub {mu}-{nu}{tau}}equivalence triggers the conversion. Such three-flavor perturbations include radiative corrections to weak interactions, small differences between the {nu}{sub {mu}}and {nu}{sub {tau}}fluxes, or nonstandard interactions. Therefore, extremely small values of {theta}{sub 13} are in practice equivalent, the fate of the system depending only on the neutrino spectra and their mass ordering.

• OSTI ID: 21409457
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 7; Other Information: DOI: 10.1103/PhysRevD.81.073004; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
DISTURBANCES
FLAVOR MODEL
MASS
MASS DIFFERENCE
MUON NEUTRINOS
NEUTRINO-NEUTRINO INTERACTIONS
OSCILLATIONS
PERTURBATION THEORY
RADIATIVE CORRECTIONS
SPECTRA
SUPERNOVAE
TAU NEUTRINOS
TRANSFORMATIONS
TRAPPING
WEAK INTERACTIONS
WEINBERG ANGLE
BASIC INTERACTIONS
BINARY STARS
CALCULATION METHODS
COMPOSITE MODELS
CORRECTIONS
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
FERMIONS
HEAVY LEPTONS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
LEPTONS
MASSLESS PARTICLES
MATHEMATICAL MODELS
NEUTRINOS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
QUARK MODEL
STARS
VARIABLE STARS