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Title: Spectral split in a prompt supernova neutrino burst: Analytic three-flavor treatment

Abstract

The prompt {nu}{sub e} burst from a core-collapse supernova is subject to both matter-induced flavor conversions and strong neutrino-neutrino refractive effects. For the lowest-mass progenitors, leading to O-Ne-Mg core supernovae, the matter density profile can be so steep that the usual Mikheyev-Smirnov-Wolfenstein matter effects occur within the dense-neutrino region close to the neutrino sphere. In this case a 'split' occurs in the emerging spectrum, i.e., the {nu}{sub e} flavor survival probability shows a steplike feature. We explain this feature analytically as a spectral split prepared by the Mikheyev-Smirnov-Wolfenstein effect. In a three-flavor treatment, the steplike feature actually consists of two narrowly spaced splits. They are determined by two combinations of flavor-lepton numbers that are conserved under collective oscillations.

Authors:
;  [1]; ;  [2]
  1. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400005 (India)
  2. Max-Planck-Institut fuer Physik (Werner-Heisenberg-Institut), Foehringer Ring 6, 80805 Muenchen (Germany)
Publication Date:
OSTI Identifier:
21205052
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 77; Journal Issue: 11; Other Information: DOI: 10.1103/PhysRevD.77.113007; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CONVERSION; DENSITY; ELECTRON NEUTRINOS; FLAVOR MODEL; MASS; OSCILLATIONS; PROBABILITY; SPECTRA; SUPERNOVAE

Citation Formats

Dasgupta, Basudeb, Dighe, Amol, Mirizzi, Alessandro, and Raffelt, Georg G. Spectral split in a prompt supernova neutrino burst: Analytic three-flavor treatment. United States: N. p., 2008. Web. doi:10.1103/PHYSREVD.77.113007.
Dasgupta, Basudeb, Dighe, Amol, Mirizzi, Alessandro, & Raffelt, Georg G. Spectral split in a prompt supernova neutrino burst: Analytic three-flavor treatment. United States. doi:10.1103/PHYSREVD.77.113007.
Dasgupta, Basudeb, Dighe, Amol, Mirizzi, Alessandro, and Raffelt, Georg G. Sun . "Spectral split in a prompt supernova neutrino burst: Analytic three-flavor treatment". United States. doi:10.1103/PHYSREVD.77.113007.
@article{osti_21205052,
title = {Spectral split in a prompt supernova neutrino burst: Analytic three-flavor treatment},
author = {Dasgupta, Basudeb and Dighe, Amol and Mirizzi, Alessandro and Raffelt, Georg G},
abstractNote = {The prompt {nu}{sub e} burst from a core-collapse supernova is subject to both matter-induced flavor conversions and strong neutrino-neutrino refractive effects. For the lowest-mass progenitors, leading to O-Ne-Mg core supernovae, the matter density profile can be so steep that the usual Mikheyev-Smirnov-Wolfenstein matter effects occur within the dense-neutrino region close to the neutrino sphere. In this case a 'split' occurs in the emerging spectrum, i.e., the {nu}{sub e} flavor survival probability shows a steplike feature. We explain this feature analytically as a spectral split prepared by the Mikheyev-Smirnov-Wolfenstein effect. In a three-flavor treatment, the steplike feature actually consists of two narrowly spaced splits. They are determined by two combinations of flavor-lepton numbers that are conserved under collective oscillations.},
doi = {10.1103/PHYSREVD.77.113007},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 11,
volume = 77,
place = {United States},
year = {2008},
month = {6}
}