The Structure Functions F_2^c, F_L and F_L^c in the Framework of the k_T Factorization

Details The Structure Functions F_2^c, F_L and F_L^c in the Framework of the k_T Factorization The Structure Functions F_2^c, F_L and F_L^c in the Framework of the k_T Factorization

2003-04-08

arxiv.org/abs/hep-ph/0304078v1

Lect.Notes Phys. 647 (2004) 386-400

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures, latex. Talk presented at the International School "Heavy Quark Physics", Dubna, Russia, May-June 2002

Scientific paper

We present the perturbative parts of the structure functions F_2^c and F_L^c for a gluon target having nonzero transverse momentum squared at order \alpha _s. The results of the double convolution (with respect to the Bjorken variable x and the transverse momentum) of the perturbative part and the unintegrated gluon densities are compared with HERA experimental data for F_2^c and F_L at low x values and with predictions of other approaches. The contribution from F_L^c structure function ranges 10\div30% of that of F_2^c at the HERA kinematical range.

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