Determining Neutrino Mass from the CMB Alone
Astrophysics
2010-04-22 v3 High Energy Physics - Phenomenology
Abstract
Distortions of Cosmic Microwave Background (CMB) temperature and polarization maps caused by gravitational lensing, observable with high angular resolution and high sensitivity, can be used to measure the neutrino mass. Assuming two massless species and one with mass m_nu we forecast sigma(m_nu) = 0.15 eV from the Planck satellite and sigma(m_nu)=0.04 eV from observations with twice the angular resolution and about 20 times the sensitivity. A detection is likely at this higher sensitivity since the observation of atmospheric neutrino oscillations require mass-squared differences greater than about (0.04 eV)^2.
Cite
@article{arxiv.astro-ph/0303344,
title = {Determining Neutrino Mass from the CMB Alone},
author = {Manoj Kaplinghat and Lloyd Knox and Yong-Seon Song},
journal= {arXiv preprint arXiv:astro-ph/0303344},
year = {2010}
}
Comments
4 pages, 1 figure; Version accepted for publication in PRL