Charm photoproduction at DESY HERA: k{sub T} factorization versus experimental data

Journal Article · Mon Jan 01 04:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.75.014028· OSTI ID:20933242

Lipatov, A V; Zotov, N P ^[1]

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1. 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, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 75; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR CORRELATION
CROSS SECTIONS
DESY
EQUATIONS
FACTORIZATION
GLUON-GLUON INTERACTIONS
GLUONS
HERA STORAGE RING
MATHEMATICAL EVOLUTION
MULTIPARTICLE SPECTROMETERS
PARTICLE IDENTIFICATION
PHOTONS
PHOTOPRODUCTION
PROTONS
QUANTUM CHROMODYNAMICS