Exclusive vector mesons at HERA

被引：0
|
作者：
Kowalski, Henri [1 ]
机构：
[1] DESY, D-22607 Hamburg, Germany
来源：
Deep Inelastic Scattering | 2007年
关键词：
D O I：
10.1142/9789812706706_0049
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In this talk I discuss 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. The analysis determines 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
收藏
页码：235 / 238
页数：4
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