Generalized Lepton Number and Dark Left-Right Gauge Model
Abstract
In a left-right gauge model of particle interactions, the left-handed fermion doublet (nu,e)L is connected to its right-handed counterpart (n,e)R through a scalar bidoublet so that eL pairs with eR, and nuL with nR to form mass terms. Suppose the latter link is severed without affecting the former, then nR is not the mass partner of nuL, and as we show in this paper, becomes a candidate for dark matter which is relevant for the recent PAMELA and ATIC observations. We accomplish this in a specific nonsupersymmetric model, where a generalized lepton number can be defined, so that nR and WR are odd under R = (-1)3B+L+2j. Fermionic leptoquarks are also predicted.
0