Identifying Neutrino Mass Hierarchy at Extremely Small θ13 through Earth Matter Effects in a Supernova Signal

被引：62

作者：

Dasgupta, Basudeb ^{[1
]}

Dighe, Amol ^{[1
]}

Mirizzi, Alessandro ^{[2
]}

机构：

[1] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India

[2] Werner Heisenberg Inst, Max Planck Inst Phys, D-80805 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.101.171801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Collective 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 Earth, will enable us to distinguish between the hierarchies if sin(2)theta(13) less than or similar to 10(-5), where long baseline neutrino experiments would be ineffectual.

引用

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