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

2002-05-08

arxiv.org/abs/hep-ph/0205070v3

Prog.Theor.Phys. 109 (2003) 919-931

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 9 figures, significantly revised. Published version in PTP

Scientific paper

10.1143/PTP.109.919

We study the effects of neutrino oscillation on supernova neutrino in the case of the inverted mass hierarchy ($m_{3} \ll m_{1} < m_{2}$) as well as the normal mass hierarchy ($m_{1} < m_{2} \ll m_{3}$). Numerical analysis using a realistic supernova and presupernova model allows us to discuss quantitatively a possibility to probe neutrino oscillation parameters. We show that information about the mass hierarchy can be obtained if $\theta_{13}$ is rather large ($\sin^{2}{2 \theta_{13}} > 10^{-3}$) and that $\theta_{13}$ can be well probed by SuperKamiokande if the neutrino mass hierarchy is the inverted case. Errors due to the uncertainty of the original neutrino spectra and the Earth effect are also discussed.

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