Phys. Rev. Lett. 91, 241301 (2003) [4 pages]Determining Neutrino Mass from the Cosmic Microwave Background AloneReceived 30 March 2003; published 10 December 2003 Distortions of cosmic microwave background 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 mν, we forecast σ(mν)=0.15 eV from the Planck satellite and σ(mν)=0.04 eV from observations with twice the angular resolution and ∼20 times the sensitivity. A detection is likely at this higher sensitivity since the observation of atmospheric neutrino oscillations requires Δmν2≳(0.04 eV)2. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.241301
DOI:
10.1103/PhysRevLett.91.241301
PACS:
98.70.Vc, 14.60.Pq, 98.62.Sb
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