What did we learn about GPDs from hard exclusive electroproduction of mesons

被引：2
|
作者：
Kroll, Peter [1 ]
机构：
[1] Univ Wuppertal, Fachbereich Phys, D-42097 Wuppertal, Germany
来源：
12TH INTERNATIONAL CONFERENCE ON MESON-NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON (MENU 2010) | 2011年 / 1374卷
关键词：
Handbag factorization; generalized parton distributions; electroproduction; GENERALIZED PARTON DISTRIBUTIONS; WAVE-FUNCTIONS; SCATTERING; QUARK;
D O I：
10.1063/1.3647106
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
It is reported on an analysis of electroproduction of light mesons at small Bjorken-x (x(Bj)) within the handbag approach. The partonic subprocesses, meson electroproduction off quarks or gluons, are calculated within the modified perturbative approach (m. p. a.) in which quark transverse momenta are retained. The soft hadronic matrix elements, generalized parton distributions (GPDs), are constructed by means of double distributions. The constraints from parton distributions and sum rules are taken into account. Various moments of these GPDs are compared to recent results from lattice gauge theories.
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页数：6
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