Charm photoproduction at DESY HERA: k{sub T} factorization versus experimental data
- D. V. Skobeltsyn Institute of Nuclear Physics, M. V. Lomonosov Moscow State University, 119992 Moscow (Russian Federation)
We calculate the cross section of charm photoproduction at HERA collider in the framework of the k{sub T}-factorization QCD approach. Our analysis covers the inclusive charm production as well as charm and associated jet production processes. Both photon-gluon and gluon-gluon fusion mechanisms are taken into account. The unintegrated gluon densities in a proton and in a photon obtained from the full Ciafaloni-Catani-Fiorani-Marchesini (CCFM), from unified Balitsky-Fadin-Kuraev-Lipatov-Dokshitzer-Gribov-Lipatov-Altarelli-Parizi evolution equations as well as from the Kimber-Martin-Ryskin prescription are used. Our theoretical results are compared with the recent experimental data taken by the H1 and ZEUS collaborations at HERA. Special attention is put on the specific angular correlations which can provide unique information about noncollinear gluon evolution dynamics.
- OSTI ID:
- 20933242
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 75, Issue 1; Other Information: DOI: 10.1103/PhysRevD.75.014028; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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