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

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dc.creatorDasgupta, B.
dc.creatorDighe, A.
dc.creatorMirizzi, A.
dc.creatorRaffelt, G. G.
dc.date2008-01-10
dc.date2008-05-05
dc.date.accessioned2026-07-07T11:55:08Z
dc.date.available2026-07-07T11:55:08Z
dc.descriptionThe 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.
dc.descriptionRevised version (14 pages, 10 eps figures) to appear in Physical Review D. Text clarified, Figure 2 improved
dc.identifierhttps://arxiv.org/abs/0801.1660
dc.identifierhttp://arxiv.org/abs/0801.1660
dc.identifierPhys.Rev.D77:113007,2008
dc.identifierdoi:10.1103/PhysRevD.77.113007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205148
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleSpectral split in prompt supernova neutrino burst: Analytic three-flavor treatment
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