Can we measure the neutrino mass hierarchy in the sky?

被引：73

作者：

Jimenez, Raul ^{[1
,2
,3
]}

Kitching, Thomas ^{[4
]}

Pena-Garay, Carlos ^{[5
]}

Verde, Licia ^{[1
,2
,3
]}

机构：

[1] Univ Barcelona, ICREA, E-08028 Barcelona, Spain

[2] Univ Barcelona, ICCUB IEEC, E-08028 Barcelona, Spain

[3] Univ Tokyo, IPMU, Chiba 2778568, Japan

[4] Univ Edinburgh, Inst Astron, Edinburgh EH9 3HJ, Midlothian, Scotland

[5] CSIC UVEG, Inst Fis Corpuscular, Valencia, Spain

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2010年 / 05期

关键词：

cosmological neutrinos; neutrino masses from cosmology; power spectrum; gravitational lensing; DARK ENERGY; SOLAR NEUTRINOS; OSCILLATIONS; MATTER;

D O I：

10.1088/1475-7516/2010/05/035

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Cosmological probes are steadily reducing the total neutrino mass window, resulting in constraints on the neutrino-mass degeneracy as the most significant outcome. In this work we explore the discovery potential of cosmological probes to constrain the neutrino hierarchy, and point out some subtleties that could yield spurious claims of detection. This has an important implication for next generation of double beta decay experiments, that will be able to achieve a positive signal in the case of degenerate or inverted hierarchy of Majorana neutrinos. We find that cosmological experiments that nearly cover the whole sky could in principle distinguish the neutrino hierarchy by yielding 'substantial' evidence for one scenario over the another, via precise measurements of the shape of the matter power spectrum from large scale structure and weak gravitational lensing.

引用

页数：14

共 37 条

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