Neutrino mass hierarchy and stepwise spectral swapping of supernova neutrino flavors

被引：115

作者：

Duan, Huaiyu ^{[1
]}

Fuller, George M. ^{[1
]}

Carlson, J. ^{[2
]}

Qian, Yong-Zhong ^{[3
]}

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[3] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.99.241802

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We examine a phenomenon recently predicted by numerical simulations of supernova neutrino flavor evolution: the swapping of supernova nu(e) and nu(mu,tau) energy spectra below (above) energy E-C 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, E-C decreases as the assumed effective 2x2 vacuum nu(e)-><-nu(mu,tau) mixing angle (similar or equal to theta(13)) is decreased. In contrast, these calculations indicate that E-C 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 theta(13) is too small to be measured by terrestrial neutrino oscillation experiments.

引用

页数：4

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