Non-Gaussianity for a two component hybrid model of inflation

We consider a hybrid model of inflation, in which two fields drive inflation. Our results show that, if the parameters are tunely tuned, this model may generate an observable non-Gaussian contribution to the curvature spectrum, within the limits allowed by the recent WMAP year three data. We show that if one field has a mass eta(phi) < 0 and an initial value phi(*) < 0.025M(pl), while the other field has a mass eta(sigma) > 0 and an initial. eld value 0.45Mpl < sigma <= M-pl, then the non-Gaussianity is observable with 1 less than or similar to f(NL) < 2.48, but that f(NL) becomes much less than the observable limit should we take both masses to have the same sign, or if we loosened the constraints on the initial field values.