Inverted Hierarchy of Neutrino Masses Disfavored by Supernova 1987A
High Energy Physics - Phenomenology
2009-10-31 v2 Astrophysics
Abstract
We discuss the flavor conversion of supernova neutrinos in the three-flavor mixing scheme of neutrinos. We point out that by neutrino observation from supernova one can discriminate the inverted hierarchy of neutrino masses from the normal one if s_{13}^2 \gsim a few \times 10^{-4}, irrespective of which oscillation solution to the solar neutrino problem is realized in nature. We perform an analysis of data of SN1987A and obtain a strong indication that the inverted mass hierarchy is disfavored unless s_{13}^2 \lsim a few \times 10^{-4}.
Keywords
Cite
@article{arxiv.hep-ph/0010240,
title = {Inverted Hierarchy of Neutrino Masses Disfavored by Supernova 1987A},
author = {Hisakazu Minakata and Hiroshi Nunokawa},
journal= {arXiv preprint arXiv:hep-ph/0010240},
year = {2009}
}
Comments
RevTex file, 15 pages, 4 postscript figures, typos corrected, version to appear in Physics Letters B