Measuring neutrino properties with BigBOSS

Details Measuring neutrino properties with BigBOSS Measuring neutrino properties with BigBOSS

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21933501s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #335.01

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Scientific paper

BigBOSS will measure cosmological fluctuations in an unprecedented volume of the Universe, covering 14000 sq.deg. and redshifts to z=3 using two complementary tracers of cosmic structure: galaxies and the Lyman-alpha forest. Using the Fisher-matrix methodology we estimate its ability to measure the neutrino mass hierarchy. Most signal comes from galaxy clustering. We should be able to measure the total mass with precision of 17meV at 1 sigma. Since terrestrial measurements of neutrino oscillations put a lower limit on the sum of netrino mass eigenstates to 50meV, BigBOSS should detect a non-zero neutrino mass. Depending on the fiducial model assumed, it might also be able to measure neutrino mass difference or rule-out inverted hierarchy. We discuss control of the systematic effects and the potential impact of these results on neutrino physics.

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