Signatures of supernova neutrino oscillations in the Earth mantle and core

Details Signatures of supernova neutrino oscillations in the Earth mantle and core Signatures of supernova neutrino oscillations in the Earth mantle and core

2003-11-13

arxiv.org/abs/hep-ph/0311172v1

JCAP 0401 (2004) 004

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages, 9 figures

Scientific paper

10.1088/1475-7516/2004/01/004

The Earth matter effects on supernova (SN) neutrinos can be identified at a single detector through peaks in the Fourier transform of their ``inverse energy'' spectrum. The positions of these peaks are independent of the SN models and therefore the peaks can be used as a robust signature of the Earth matter effects, which in turn can distinguish between different neutrino mixing scenarios. Whereas only one genuine peak is observable when the neutrinos traverse only the Earth mantle, traversing also the core gives rise to multiple peaks. We calculate the strengths and positions of these peaks analytically and explore their features at a large scintillation detector as well as at a megaton water Cherenkov detector through Monte Carlo simulations. We propose a simple algorithm to identify the peaks in the actual data and quantify the chances of a peak identification as a function of the location of the SN in the sky.

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