2003/03/21 by Zhi-zhong Xing
Physics and Astronomy · #hep-ph #astro-ph #hep-ex
published as High Energy Phys.Nucl.Phys. 27 (2003) 841-845 · RevTex 9 pages (2 PS figures)
arxiv created 2003/03/21 · arxiv updated 2009/11/30
We show that the recent WMAP data can impose a generous upper bound on the effective masses of electron, muon and tau neutrinos defined in the kinematic measurements: <m>2e + < m>2μ+ < m>2τ= m21 + m22 + m23 < 0.5 ~ \rm eV2, or <m>α< 0.71 eV (for α= e, μ, τ). When current neutrino oscillation data are taken into account, we obtain <m>e <0.24 eV and <m>μ≈ < m>τ< 0.24 eV. Thus there is no hope to kinematically detect <m>μ and <m>τ in any realistic experiments.