TY  - JOUR
AU  - Jimenez, R.
AU  - Kitching, T.
AU  - Pena-Garay, C.
AU  - Verde, L.
PY  - 2010
DA  - 2010//
TI  - Can we measure the neutrino mass hierarchy in the sky?
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 035
EP  - 14pp
VL  - 05
IS  - 5
PB  - Iop Publishing Ltd
KW  - cosmological neutrinos
KW  - neutrino masses from cosmology
KW  - power spectrum
KW  - gravitational lensing
AB  - 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.
SN  - 1475-7516
UR  - http://lanl.arxiv.org/abs/1003.5918
UR  - https://doi.org/10.1088/1475-7516/2010/05/035
DO  - 10.1088/1475-7516/2010/05/035
LA  - English
N1  - ISI:000279490800005
ID  - Jimenez_etal2010
ER  -