Is the LMA solar-neutrino solution ruled out by SN1987A data?

Details Is the LMA solar-neutrino solution ruled out by SN1987A data? Is the LMA solar-neutrino solution ruled out by SN1987A data?

2000-10-17

arxiv.org/abs/astro-ph/0010339v1

Nucl.Phys.Proc.Suppl. 100 (2001) 58-61

Astronomy and Astrophysics

Astrophysics

4 pages; 6 figures. Presented at the Europhysics Neutrino Oscillation Workshop, NOW 2000 (EPS, Lecce, Italy, Sept. 9-16, 2000)

Scientific paper

10.1016/S0920-5632(01)01410-4

The development of new supernova neutrino detectors relies on the expected hard energy spectrum of the nu_mu and nu_tau emitted in the supernova. We show that SN1987A was sensitive to the large mixing angle (LMA) and "just so" solution to the solar neutrino problem. We review the previous analysis of the SN1987A data and propose a new analysis. The results of this analysis strongly disfavor the LMA solution, provided the nu_mu and nu_tau are hard as predicted

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