A see-saw model of sterile neutrino
نویسنده
چکیده
If the smallness of the mass of the sterile neutrino is to be explained by seesaw mechanism, the off-diagonal entries of its mass matrix has to be protected by some symmetry near the electroweak scale. We study a gauge model based on SU(2)qL × SU(2) l L × U(1) q Y × U(1) l Y un-unified gauge group which breaks to SU(2)L × U(1)Y at the TeV region and this serves our purpose. The diagonal element is tied to the highest scale up-to which the un-unification symmetry holds. The sterile neutrino is interpreted as the low energy manifestation of a quark-lepton mixed representation of the un-unified group.
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تاریخ انتشار 1998