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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-4177
DTSTART:20160511T150000Z
DTEND:20160511T160000Z
DTSTAMP:20260311T071953Z
LAST-MODIFIED:20160509T180425Z
LOCATION:4274 Chamberlin Hall
SUMMARY:Neutrino mass limits from galaxy surveys and implications for 
 particle physics\, NPAC (Nuclear/Particle/Astro/Cosmo) Forum\, Viviana
  Niro\, Madrid\, Autonoma U. & Madrid\, IFT
DESCRIPTION:In this talk I'll first review the information that cosmol
 ogy can provide on neutrino properties\, in particular on the sum of n
 eutrino masses. I'll then present constraints on neutrino masses obtai
 ned using information from galaxy surveys. In particular\, I'll use ga
 laxy power spectrum data from the WiggleZ Dark Energy Survey (WZ) and 
 from the Luminous Red Galaxies (LRG) sample of the Sloan Digital Sky S
 urvey-Data Release 7 (SDSS-DR7). I'll show how the constraints on neut
 rino masses\, obtained using Planck temperature and polarisation measu
 rements\, are improved by the information on the full shape of the pow
 er spectrum. Adding also Baryon Acoustic Oscillations measurements\, t
 he constraints on neutrino masses are further improved\, since these m
 easurements help in breaking cosmological parameters degeneracies. The
  tighter upper limit (0.13 eV) is obtained using SDSS-DR7 LRG together
  with Baryon Acoustic Oscillations measurements and Planck data. This 
 value is close to the one recently obtained using Lyman-alpha data. Fi
 nally\, I'll outline the implications of these current bounds for part
 icle physics and the interplay with laboratory experiments\, such as t
 ritium beta decay and neutrinoless double-beta decay experiments.
URL:https://www.physics.wisc.edu/events/?id=4177
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