Interplay between collective effects and nonstandard interactions of supernova neutrinos

Journal Article · Mon Mar 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.063003· OSTI ID:21409366

Esteban-Pretel, A; Valle, J W. F. ^[1]; Tomas, R ^[2]

---

1. AHEP Group, Institut de Fisica Corpuscular-CSIC/Universitat de Valencia Edifici Instituts d'Investigacio, Apt. 22085, E-46071 Valencia (Spain)
2. II. Institut fuer theoretische Physik, Universitaet Hamburg, Luruper Chaussee 149, 22761 Hamburg (Germany)

We consider the effect of nonstandard neutrino interactions (NSI, for short) on the propagation of neutrinos through the supernova (SN) envelope within a three-neutrino framework and taking into account the presence of a neutrino background. We find that for given NSI parameters, with strength generically denoted by {epsilon}{sub ij}, neutrino evolution exhibits a significant time dependence. For |{epsilon}{sub {tau}{tau}|} > or approx. 10{sup -3} the neutrino survival probability may become sensitive to the {theta}{sub 23} octant and the sign of {epsilon}{sub {tau}{tau}.} In particular, if {epsilon}{sub {tau}{tau}}> or approx. 10{sup -2} an internal I-resonance may arise independently of the matter density. For typical values found in SN simulations this takes place in the same dense-neutrino region above the neutrinosphere where collective effects occur, in particular, during the synchronization regime. This resonance may lead to an exchange of the neutrino fluxes entering the bipolar regime. The main consequences are (i) bipolar conversion taking place for normal neutrino mass hierarchy and (ii) a transformation of the flux of low-energy {nu}{sub e}, instead of the usual spectral swap.

• OSTI ID: 21409366
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevD.81.063003; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CONVERSION
DENSITY
ELECTRON NEUTRINOS
INTERACTIONS
MASS
NEUTRINO DETECTION
PROBABILITY
RESONANCE
SIMULATION
SUPERNOVAE
SYNCHRONIZATION
TIME DEPENDENCE
TRANSFORMATIONS
BINARY STARS
DETECTION
ELEMENTARY PARTICLES
ERUPTIVE VARIABLE STARS
FERMIONS
LEPTONS
MASSLESS PARTICLES
NEUTRINOS
PHYSICAL PROPERTIES
RADIATION DETECTION
STARS
VARIABLE STARS