1201.6658 (Michele Moresco et al.)

New constraints on cosmological parameters and neutrino properties using the expansion rate of the Universe to z~1.75    [PDF]

Michele Moresco, Licia Verde, Lucia Pozzetti, Raul Jimenez, Andrea Cimatti

We have assembled a compilation of observational Hubble parameter measurements estimated with the differential evolution of cosmic chronometers, in the redshift range 04 at 95% confidence level (at 74% confidence level using the Atacama Cosmology Telescope instead). We also put competitive limits on the sum of neutrino masses, m_\nu<0.24 eV at 68% confidence level. These results have been proven to be extremely robust to the initial choice of stellar population synthesis model adopted to estimate H(z).

View original: http://arxiv.org/abs/1201.6658