NLO corrections to the hard pomeron behavior of the charm structure functions Fkc (k=2, L) at low x

We show that the charm structure functions F-k(c) have a hard pomeron behavior at low x. as the gluon distribution is dominated by the hard (Lipatov) pomeron at small x and all Q(2) values. It is shown that the charm structure functions obtained, using the gluon distribution functions. are in agreement with data from HERA in the next-to-leading analysis (NLO). Having checked that this behavior gives the charm structure functions exponent independent of x. With respect to the hard (Lipatov) pomeron for the low-x gluon distribution, we provide a compact formula for the ratio R-c = F-L(C)/F-2(C);. that is approximately independent of x at low x and its independent of the input gluon distribution function at all Q(2) values. Published by Elsevier B.V.