Non-adiabatic oscillations of supernova neutrinos

Abstract

The level-crossing probability, local and global adiabaticity conditions are discussed for 2-flavour neutrino oscillations in matter with arbitrary mixing angle $\theta$. Different approximations for the survival probability of supernova neutrinos are compared. Results of a combined likelihood analysis of the observed SN1987A neutrino signal and of the latest solar neutrino data including the recent SNO CC measurement are presented.

Comments: 5 pages, 8 eps figures, JHEP style included. Talk presented at "Neutrino masses and mixings", Les Houches, June 2001, and at "EPS HEP 2001", Budapest, July 2001