The longitudinal structure function FL(x, Q2) and the gluon distribution G(x, Q2) at low x

We obtain a relation between the longitudinal structure function F-L(x, Q(2)), F-2(x, Q(2)) and G(x, Q(2)) at small x, using the formalism recently reported by one of the authors [2]. We also obtain a relation between F-L(x, Q(2)), F-2(x, Q(2)) and its slope (d F-2(x, Q(2)))/(d ln Q(2)). This provides us with the determination of the longitudinal structure function F-L(x, Q(2)) from F-2(x, Q(2)) data and hence extract the gluon distribution G(x, Q(2)).