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eV Seesaw with Four Generations

Wei-Shu Hou·Andrea Soddu
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Abstract

We extend the eV seesaw scenario to four lepton generations. The LSND anomaly is taken as the right-handed seesaw scale, i.e. m_R ~ eV. The fourth generation then gives a heavy pseudo-Dirac neutrino which largely decouples from other generations, and is relatively stable. One effectively has a 3+3 solution to the LSND anomaly, where we illustrate with numerical solutions. Our study indicates that the third mixing angle sin^2(theta13) is likely less than 0.01.

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Wei-Shu Hou, Andrea Soddu. 2006-05-09. eV Seesaw with Four Generations. https://doi.org/10.1016/j.physletb.2006.05.011

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