http://arxiv.org/abs/1404.5198
Popular candidates for unfication of the electroweak and strong interactions include the grand unified groups SU(5), SO(10), and the exceptional group E6. An attractive feature of the last is its ability to accommodate light “sterile” [SU(2)$_L$-singlet] neutrinos, hinted at by some recent short-baseline neutrino oscillation experiments. In order to accommodate three families of quarks and charged leptons, an E6 model must contain three 27-plets, each of which contains a sterile neutrino candidate $n$. The mixing pattern within a 27-plet is described, and experimental consequences are discussed.
J. Rosner
Tue, 22 Apr 14
50/54
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