Supernova neutrinos can tell us the neutrino mass hierarchy independently of flux models

Details Supernova neutrinos can tell us the neutrino mass hierarchy independently of flux models Supernova neutrinos can tell us the neutrino mass hierarchy independently of flux models

2005-01-19

arxiv.org/abs/hep-ph/0501184v2

Phys.Lett.B617:167-173,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 3 figures. Version to appear in PLB

Scientific paper

10.1016/j.physletb.2005.05.017

We demonstrate that the detection of shock modulations of the neutrino spectra from a galactic core-collapse supernova is sufficient to obtain a high significance determination of the neutrino mass hierarchy if the supernova event is observed in both a Mton-class water Cherenkov detector and a 100 kton-class liquid argon detector. Neither detailed supernova neutrino flux modelling nor observation of Earth matter effects is needed for this determination. As a corollary, a nonzero value of \theta_x will be established.

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