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Title: Multiangle simulation of flavor evolution in the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova

Abstract

We report results of the first 3x3 'multiangle' simulation of the evolution of neutrino flavor in the core-collapse supernova environment. In particular, we follow neutrino flavor transformation in the neutronization neutrino burst of an O-Ne-Mg core-collapse event. Though in a qualitative sense our results are consistent with those obtained in 3x3 single-angle simulations, at least in terms of neutrino mass hierarchy dependence, performing multiangle calculations is found to reduce the adiabaticity of flavor evolution in the normal neutrino mass hierarchy, resulting in lower swap energies. Differences between single-angle and multiangle results are largest for the normal neutrino mass hierarchy. Our simulations also show that current uncertainties in the measured mass-squared and mixing angle parameters translate into uncertainties in neutrino swap energies. Our results show that at low {theta}{sub 13} it may be difficult to resolve the neutrino mass hierarchy using the O-Ne-Mg neutronization neutrino burst.

Authors:
; ; ; ;  [1]
  1. Department of Physics, University of California, San Diego, La Jolla, California 92093 (United States)
Publication Date:
OSTI Identifier:
21432428
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles Fields
Additional Journal Information:
Journal Volume: 82; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.82.085025; (c) 2010 American Institute of Physics; Journal ID: ISSN 0556-2821
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; FLAVOR MODEL; GRAVITATIONAL COLLAPSE; MASS; NEUTRINOS; NEUTRON STARS; SIMULATION; SUPERNOVAE; TRANSFORMATIONS; WEINBERG ANGLE; BINARY STARS; COMPOSITE MODELS; ELEMENTARY PARTICLES; ERUPTIVE VARIABLE STARS; FERMIONS; LEPTONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; PARTICLE MODELS; QUARK MODEL; STARS; VARIABLE STARS

Citation Formats

Cherry, John F, Fuller, George M, Carlson, J, Huaiyu, Duan, Yongzhong, Qian, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, and School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455. Multiangle simulation of flavor evolution in the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova. United States: N. p., 2010. Web. doi:10.1103/PHYSREVD.82.085025.
Cherry, John F, Fuller, George M, Carlson, J, Huaiyu, Duan, Yongzhong, Qian, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, & School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455. Multiangle simulation of flavor evolution in the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova. United States. doi:10.1103/PHYSREVD.82.085025.
Cherry, John F, Fuller, George M, Carlson, J, Huaiyu, Duan, Yongzhong, Qian, Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, and School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455. Fri . "Multiangle simulation of flavor evolution in the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova". United States. doi:10.1103/PHYSREVD.82.085025.
@article{osti_21432428,
title = {Multiangle simulation of flavor evolution in the neutronization neutrino burst from an O-Ne-Mg core-collapse supernova},
author = {Cherry, John F and Fuller, George M and Carlson, J and Huaiyu, Duan and Yongzhong, Qian and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 and School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455},
abstractNote = {We report results of the first 3x3 'multiangle' simulation of the evolution of neutrino flavor in the core-collapse supernova environment. In particular, we follow neutrino flavor transformation in the neutronization neutrino burst of an O-Ne-Mg core-collapse event. Though in a qualitative sense our results are consistent with those obtained in 3x3 single-angle simulations, at least in terms of neutrino mass hierarchy dependence, performing multiangle calculations is found to reduce the adiabaticity of flavor evolution in the normal neutrino mass hierarchy, resulting in lower swap energies. Differences between single-angle and multiangle results are largest for the normal neutrino mass hierarchy. Our simulations also show that current uncertainties in the measured mass-squared and mixing angle parameters translate into uncertainties in neutrino swap energies. Our results show that at low {theta}{sub 13} it may be difficult to resolve the neutrino mass hierarchy using the O-Ne-Mg neutronization neutrino burst.},
doi = {10.1103/PHYSREVD.82.085025},
journal = {Physical Review. D, Particles Fields},
issn = {0556-2821},
number = 8,
volume = 82,
place = {United States},
year = {2010},
month = {10}
}