Cross-channel analysis of quark and gluon generalized parton distributions with helicity flip

被引：5

作者：

Pire, B. ^{[1
]}

Semenov-Tian-Shansky, K. ^{[2
]}

Szymanowski, L. ^{[3
]}

Wallon, S. ^{[4
,5
]}

机构：

[1] Ecole Polytech, CNRS, CPhT, F-91128 Palaiseau, France

[2] Univ Liege, IFPA, Dept AGO, B-4000 Liege, Belgium

[3] Natl Ctr Nucl Res NCBJ, Warsaw, Poland

[4] Univ Paris 11, CNRS, LPT, F-91405 Orsay, France

[5] Univ Paris 06, Fac Phys, F-75252 Paris, France

来源：

EUROPEAN PHYSICAL JOURNAL A | 2014年 / 50卷 / 05期

关键词：

HARD EXCLUSIVE ELECTROPRODUCTION; VIRTUAL COMPTON-SCATTERING; TRANSVERSE POLARIZATION; DUAL PARAMETRIZATION; DECOMPOSITION; GPDS;

D O I：

10.1140/epja/i2014-14090-1

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：

Quark and gluon helicity flip generalized parton distributions (GPDs) address the transversity quark and gluon structure of the nucleon. In order to construct a theoretically consistent parametrization of these hadronic matrix elements, we work out the set of combinations of those GPDs suitable for the SO(3) partial wave (PW) expansion in the cross-channel. This universal result will help to build up a flexible parametrization of these important hadronic non-perturbative quantities, using, for instance, the approaches based on the conformal PW expansion of GPDs such as the Mellin-Barnes integral or the dual parametrization techniques.

引用

页码：1 / 15

页数：15