Three-flavor collective oscillations of supernova neutrinos

Details Three-flavor collective oscillations of supernova neutrinos Three-flavor collective oscillations of supernova neutrinos

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aps..dnp.cd007f&link_type=abstract

American Physical Society, 2010 Fall Meeting of the APS Division of Nuclear Physics, November 2-6, 2010, abstract #CD.007

Physics

Nuclear Physics

Scientific paper

Coherent forward scattering of neutrinos off each other leads to complex collective neutrino oscillations inside a supernova. We explore this phenomenon during the cooling stage of the explosion. Two- and three-flavor calculations of the oscillations are shown to give strikingly different results, especially for the inverted mass hierarchy. Analysis shows that the 2-flavor evolution trajectory can be unstable in the 3-flavor space. Additionally, the 3-flavor evolution is shown to be partially non-adiabatic, resulting in a ``mixed'' spectrum. Our results could impact the interpretation of the future galactic supernova signal, the analysis of the r-process nucleosynthesis, and the predictions of the diffuse supernova neutrino background. Based on Phys. Rev. Lett. 104:191102 (2010).

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