Effects of neutrino oscillation on supernova neutrino: inverted mass hierarchy

Details Effects of neutrino oscillation on supernova neutrino: inverted mass hierarchy Effects of neutrino oscillation on supernova neutrino: inverted mass hierarchy

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003nupha.718..455t&link_type=abstract

Nuclear Physics A, Volume 718, p. 455-457.

Physics

Nuclear Physics

9

Scientific paper

We study the effects of neutrino oscillation on supernova neutrino in the case of the inverted mass hierarchy (m3 << m1 < m2). This is an extended study of our previous study [1] where all analyses are performed with normal mass hierarchy (m1 < m2 << m3). Numerical analysis using a realistic supernova and presupernova model allow us to discuss quantitatively a possibility to probe neutrino oscillation parameters. We show that we can break partly the degeneracy of the solar neutrino problem (LMA or SMA) and probe the magnitude of θ13 to some extent by the ratios of high-energy events and low-energy events at SuperKamiokande and SNO and the presence of the Earth effects. Further, if the magnitude of θ13 is known roughly, we can identify the mass hierarchy.
This work was supported in part by Grants-in-Aid for Scientific Research provided by the Ministry of Education, Science and Culture of Japan through Research Grant No.S14102004.

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