8-13 September 2013
Asilomar, California
US/Pacific timezone

Self-induced flavor evolution of supernova neutrinos without axial symmetry

12 Sep 2013, 15:20
20m
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Oral Low-Energy Neutrinos (solar, reactor, supernova, and geo neutrinos and also nuclear astrophysics associated with these sources) Atmospheric Neutrinos II

Speaker

Prof. Alessandro Mirizzi (Hamburg University)

Description

Supernova neutrinos experience self-induced flavor conversions associated with the neutrino-neutrino interactions in the deepest stellar regions. In this context, we perferm the first numerical simulations of the self-induced neutrino evolution incluing the azimuthal angle of neutrino propagation as an explicit variable. Without enforcing the axial symmetry of the solution, we find that new suprising results can occur. In particular, a new flavor instability develops in normal mass hierarchy leading to large flavor conversions. Depending on the intial differences of the neutrino fluxes, these can lead to peculiar spectral splits or to flavor decoherence of the neutrino ensemble.

Primary author

Prof. Alessandro Mirizzi (Hamburg University)

Presentation Materials

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