New Cosmological Constraints on Neutrino Parameters

by Alessandro Melchiorri (University of Roma "La Sapienza")

Thursday 22 Nov 2007, 14:00 → 15:00 Europe/Zurich

TH Theory Conference Room (CERN)

A survey is made of the most recent constraints on Neutrino parameters from several cosmological observables (Cosmic Microwave Background Anisotropies, Large Scale Structure, Lyman-alpha forest clouds). In particular I will discuss the interplay between cosmological, tritium decay and neutrinoless double beta decay data in determining the neutrino mass parameters. I will also show that independent determinations of the age of the universe in combination with CMB data can provide the most stringent constraint on the effective number of neutrino species.