Spectral split in prompt supernova neutrino burst: Analytic three-flavor treatment
Jan, 2008
12 pages
Published in:
- Phys.Rev.D 77 (2008) 113007
e-Print:
- 0801.1660 [hep-ph]
Report number:
- MPP-2008-3
View in:
Citations per year
Abstract: (arXiv)
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.Note:
- 12 pages, 10 eps figures
- 14.60.Pq
- 97.60.Bw
- supernova
- neutrino: burst
- neutrino: mass difference
- MSW effect
- neutrino neutrino: interaction
- matter: density
- flavor: 3
- mass: hierarchy
References(54)
Figures(10)