Identifying neutrino mass hierarchy at extremely small theta(13) through Earth matter effects in a supernova signal

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dc.creatorDasgupta, Basudeb
dc.creatorDighe, Amol
dc.creatorMirizzi, Alessandro
dc.date2008-02-11
dc.date2008-10-20
dc.date.accessioned2026-07-07T11:55:57Z
dc.date.available2026-07-07T11:55:57Z
dc.descriptionCollective neutrino flavor transformations deep inside a supernova are sensitive to the neutrino mass hierarchy even at extremely small values of theta(13). Exploiting this effect, we show that comparison of the antineutrino signals from a galactic supernova in two megaton class water Cherenkov detectors, one of which is shadowed by the Earth, will enable us to distinguish between the hierarchies if sin^2 theta(13) < 10^{-5}. On the other hand, the observation of Earth effects in the inverted hierarchy for sin^2 theta(13) > 10^{-3} will provide a robust observable signature of collective oscillations occurring deep inside the supernova.
dc.descriptionFinal version: Text clarified, references updated. Matches the version published in Physical Review Letters
dc.identifierhttps://arxiv.org/abs/0802.1481
dc.identifierhttp://arxiv.org/abs/0802.1481
dc.identifierPhys.Rev.Lett.101:171801,2008
dc.identifierdoi:10.1103/PhysRevLett.101.171801
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205420
dc.subjectHigh Energy Physics - Phenomenology
dc.titleIdentifying neutrino mass hierarchy at extremely small theta(13) through Earth matter effects in a supernova signal
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