Hopeless to Kinematically Detect the Effective Masses of Muon and Tau Neutrinos

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XING Zhi-Zhong. Hopeless to Kinematically Detect the Effective Masses of Muon and Tau Neutrinos[J]. Chinese Physics C, 2003, 27(10): 841-845.
XING Zhi-Zhong. Hopeless to Kinematically Detect the Effective Masses of Muon and Tau Neutrinos[J]. Chinese Physics C, 2003, 27(10): 841-845. shu
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Received: 2003-05-28
Revised: 1900-01-01
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Hopeless to Kinematically Detect the Effective Masses of Muon and Tau Neutrinos

    Corresponding author: XING Zhi-Zhong,
  • Institute of High Energy Physics,CAS,Beijing 100039,China

Abstract: 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:2, +< m>u2+2t = m12 + m22 + m32<0.5eV2, or a<0.71eV ( for a = e, u,t) . When current neutrino oscillation data are taken into account, we obtain (m)?< 0.24eV and u=t< 0.24eV, Thus there is no hope to kinematically detect u and t in any realistic experiments.

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