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          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 544634.0, MPI für Physik / MPI für Physik
Spectral split in prompt supernova neutrino burst: Analytic three-flavor treatment
Authors:Dasgupta, B.; Dighe, A.; Mirizzi, A.; Raffelt, G. G.
Date of Publication (YYYY-MM-DD):2008
Title of Journal:Physical Review D
Journal Abbrev.:Phys.Rev.D
Issue / Number:77
Start Page:113007
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:The prompt nu_e burst from a core-collapse supernova (SN) 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 SNe, the matter density profile can be so shallow that the usual MSW 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_e flavor survival probability shows a step-like feature. We explain this feature analytically as a "MSW prepared spectral split." In a three-flavor treatment, the step-like feature actually consists of two narrowly spaced splits. They are determined by two combinations of flavor-lepton numbers that are conserved under collective oscillations.
Classification / Thesaurus:Astroparticle Physics
Comment of the Author/Creator:12 pages, 10 eps figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2008-3
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/arxiv:0801.1660
URL:http://publications.mppmu.mpg.de/?action=search&mp...
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