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Title: Stellar collapse dynamics with neutrino flavor changing neutral currents

Abstract

We perform one-zone simulations of the infall epoch of a presupernova stellar core in the presence of neutrino flavor changing scattering interactions. Our calculations give a self-consistent assessment of the relationship between flavor changing rates and the reduction in electron fraction and redistribution of initial electron lepton number among the neutrino flavors. We discuss and include in our calculations subnuclear density medium corrections for flavor changing scattering coherence factors. We find that flavor changing couplings {epsilon}>3x10{sup -4} in either the {nu}{sub e}{r_reversible}{nu}{sub {mu}} or {nu}{sub e}{r_reversible}{nu}{sub {tau}} channels result in a dynamically significant reduction in the core electron fraction relatively soon after neutrino trapping and well before the core reaches nuclear matter density.

Authors:
;  [1]
  1. Department of Physics, University of California, San Diego, La Jolla, California 92093-0319 (United States)
Publication Date:
OSTI Identifier:
21020342
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.75.083008; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CORRECTIONS; COUPLING; ELECTRONS; FLAVOR MODEL; LEPTON NUMBER; NEUTRAL CURRENTS; NEUTRINOS; NUCLEAR MATTER; SCATTERING

Citation Formats

Amanik, Philip S., and Fuller, George M. Stellar collapse dynamics with neutrino flavor changing neutral currents. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.083008.
Amanik, Philip S., & Fuller, George M. Stellar collapse dynamics with neutrino flavor changing neutral currents. United States. doi:10.1103/PHYSREVD.75.083008.
Amanik, Philip S., and Fuller, George M. Sun . "Stellar collapse dynamics with neutrino flavor changing neutral currents". United States. doi:10.1103/PHYSREVD.75.083008.
@article{osti_21020342,
title = {Stellar collapse dynamics with neutrino flavor changing neutral currents},
author = {Amanik, Philip S. and Fuller, George M.},
abstractNote = {We perform one-zone simulations of the infall epoch of a presupernova stellar core in the presence of neutrino flavor changing scattering interactions. Our calculations give a self-consistent assessment of the relationship between flavor changing rates and the reduction in electron fraction and redistribution of initial electron lepton number among the neutrino flavors. We discuss and include in our calculations subnuclear density medium corrections for flavor changing scattering coherence factors. We find that flavor changing couplings {epsilon}>3x10{sup -4} in either the {nu}{sub e}{r_reversible}{nu}{sub {mu}} or {nu}{sub e}{r_reversible}{nu}{sub {tau}} channels result in a dynamically significant reduction in the core electron fraction relatively soon after neutrino trapping and well before the core reaches nuclear matter density.},
doi = {10.1103/PHYSREVD.75.083008},
journal = {Physical Review. D, Particles Fields},
number = 8,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}