Neutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors

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dc.creatorDuan, Huaiyu
dc.creatorFuller, George M.
dc.creatorCarlson, J.
dc.creatorQian, Yong-Zhong
dc.date2007-07-02
dc.date2007-12-14
dc.date.accessioned2026-07-07T11:17:25Z
dc.date.available2026-07-07T11:17:25Z
dc.descriptionWe examine a phenomenon recently predicted by numerical simulations of supernova neutrino flavor evolution: the swapping of supernova $ν_e$ and $ν_{μ,τ}$ energy spectra below (above) energy $\EC$ for the normal (inverted) neutrino mass hierarchy. We present the results of large-scale numerical calculations which show that in the normal neutrino mass hierarchy case, $\EC$ decreases as the assumed $ν_e\rightleftharpoonsν_{μ,τ}$ effective $2\times 2$ vacuum mixing angle ($\simeq θ_{1 3}$) is decreased. However, these calculations also indicate that $\EC$ is essentially independent of the vacuum mixing angle in the inverted neutrino mass hierarchy case. With a good neutrino signal from a future Galactic supernova, the above results could be used to determine the neutrino mass hierarchy even if $θ_{13}$ is too small to be detected in terrestrial neutrino oscillation experiments.
dc.description4 pages, 2 figures. Version accepted by PRL
dc.identifierhttps://arxiv.org/abs/0707.0290
dc.identifierhttp://arxiv.org/abs/0707.0290
dc.identifierPhys.Rev.Lett.99:241802,2007
dc.identifierdoi:10.1103/PhysRevLett.99.241802
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/193003
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleNeutrino Mass Hierarchy and Stepwise Spectral Swapping of Supernova Neutrino Flavors
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