Probing for variation of neutrino mass with current observations

Nov, 2006
4 pages
Published in:
  • JCAP 07 (2007) 010
e-Print:

Citations per year

20062011201620212025012345
Abstract: (arXiv)
With the latest astronomical data including Cosmic Microwave Background (WMAP three year, CBI, ACBAR, VSA), Type Ia Supernova (gold sample), galaxy clustering (SDSS 3-D matter power, Lyman-α\alpha forest and Baryon Acoustic Oscillating (BAO)), we make a global fitting to constrain the mass varying neutrinos. We find the parameter denoting time evolving of neutrino mass δ\delta is weakly constrained and the neutrino mass limit today can be relaxed at least by a factor of 2. Adding data of 0ν2β0\nu2\beta decay of Heidelberg-Moscow experiment to our analysis, we find δ\delta can be measured and mass varying neutrinos are favored at about 99.7% confidence level.
Note:
  • 4 pages, 4 figures
  • neutrino: mass
  • mass: time dependence
  • cosmic background radiation
  • supernova
  • data analysis method
  • galaxy: cluster
  • baryon: oscillation
  • oscillation: acoustic
  • double-beta decay: (0neutrino)
  • dark matter