Inclusive J/ψ photoproduction and polarization at HERA in the kT-factorization approach

被引：11

作者：

Baranov, S. P. ^{[1
]}

Lipatov, A. V. ^{[2
]}

Zotov, N. P. ^{[2
]}

机构：

[1] PN Lebedev Phys Inst, Moscow 119991, Russia

[2] Moscow MV Lomonosov State Univ, DV Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

来源：

EUROPEAN PHYSICAL JOURNAL C | 2011年 / 71卷 / 04期

关键词：

SMALL-X PHENOMENOLOGY; OCTET QUARKONIA PRODUCTION; INITIAL-STATE RADIATION; INELASTIC PHOTOPRODUCTION; PARTON DISTRIBUTIONS; J-PSI; HADRONIC PRODUCTION; QCD COHERENCE; COLLIDERS; UPSILON;

D O I：

10.1140/epjc/s10052-011-1631-4

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate the inclusive photoproduction of J/psi mesons at HERA within the framework of the k(T)-factorization QCD approach. Our study is based on the color singlet model supplemented with the relevant off-shell matrix elements and the CCFM and KMR unintegrated gluon densities in a proton and in a photon. Both the direct and resolved photon contributions are taken into account. Our predictions are compared with the recent experimental data taken by the H1 and ZEUS collaborations. Special attention is put on the J/psi polarization parameters lambda and nu, which are sensitive to the production dynamics.

引用

页码：1 / 14

页数：14

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