The longitudinal cross section of vector meson electroproduction

被引：115

作者：

Goloskokov, S. V. ^{[1
]}

Kroll, P.

机构：

[1] Joint Inst Nucl Res, Bogoliubov Lab Theoret Phys, Dubna 141980, Moscow Region, Russia

[2] Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany

来源：

EUROPEAN PHYSICAL JOURNAL C | 2007年 / 50卷 / 04期

关键词：

D O I：

10.1140/epjc/s10052-007-0228-4

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 analyze electroproduction of light vector mesons (V = rho,phi and omega) at small Bjorken-x in the handbag approach, in which the process factorizes into general parton distributions and partonic subprocesses. The latter are calculated in the modified perturbative approach in which the transverse momenta of the quark and antiquark forming the vector meson are retained and Sudakov suppression is taken into account. Modeling the generalized parton distributions through double distributions and using simple Gaussian wavefunctions for the vector mesons, we compute the longitudinal cross sections at large photon virtualities. The results are in fair agreement with the findings of recent experiments performed at HERA and HERMES.

引用

页码：829 / 842

页数：14

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