Probing for variation of neutrino mass with current observations

Abstract

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-$\alpha$ forest and Baryon Acoustic Oscillating (BAO)), we make a global fitting to constrain the mass varying neutrinos. We find that the parameter $\delta$, denoting time evolving of neutrino mass, is weakly constrained and the neutrino mass limit today can be relaxed at least by a factor of two. Adding data of $0\nu 2\beta$ decay of Heidelberg-Moscow experiment to our analysis, we find that $\delta$ can be constrained tightly and mass varying neutrinos are favored at about 99.7% confidence level.

9 pages, 4 figures

References in corpus (9)

• Cosmological parameters from combining the Lyman-alpha forest with CMB, galaxy clustering and SN constraints
• Can sterile neutrinos be the dark matter?
• Cosmology of Mass-Varying Neutrinos Driven by Quintessence: Theory and Observations
• Observables sensitive to absolute neutrino masses: A reappraisal after WMAP-3y and first MINOS results
• Cosmological Evolution of Interacting Dark Energy Models with Mass Varying Neutrinos
• Probing Neutrino Dark Energy with Extremely High-Energy Cosmic Neutrinos
• The impact of neutrino masses on the determination of dark energy properties
• Cosmological neutrino mass limit and the dynamics of dark energy
• Weighing neutrinos in the presence of a running primordial spectral index

Cited by in corpus (10)

• The Low-Energy Frontier of Particle Physics
• Determining Cosmological Parameters with Latest Observational Data
• Observational constraints on cosmic neutrinos and dark energy revisited
• Weighing Neutrinos in $f(R)$ gravity
• Model independent constraints on mass-varying neutrino scenarios
• High-resolution temporal constraints on the dynamics of dark energy
• Dirac Neutrinos, Dark Energy and Baryon Asymmetry
• Unified picture for Dirac neutrinos, dark matter, dark energy and matter-antimatter asymmetry
• Possible scenario for MaVaN's as the only neutrino flavor conversion mechanism in the Sun
• Weighing neutrinos in $f(R)$ gravity in light of BICEP2