Exclusive diffractive processes at HERA within the dipole picture

被引：441

作者：

Kowalski, H. ^{[1
]}

Motyka, L.

Watt, G.

机构：

[1] DESY, Deutsch Elektronen Synchrotron, D-22607 Hamburg, Germany

[2] Jagiellonian Univ, Inst Phys, PL-30059 Krakow, Poland

[3] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

PHYSICAL REVIEW D | 2006年 / 74卷 / 07期

关键词：

D O I：

10.1103/PhysRevD.74.074016

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a simultaneous analysis, within an impact parameter dependent saturated dipole model, of exclusive diffractive vector meson (J/psi, phi, and rho) production, deeply virtual Compton scattering and the total gamma(*)p cross section data measured at HERA. Various cross sections measured as a function of the kinematic variables Q(2), W and t are well described, with little sensitivity to the details of the vector meson wave functions. We determine the properties of the gluon density in the proton in both longitudinal and transverse dimensions, including the impact parameter dependent saturation scale. The overall success of the description indicates universality of the emerging gluon distribution and proton shape.

引用

页数：27

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