PROBING GENERALIZED PARTON DISTRIBUTIONS THROUGH THE PHOTOPRODUCTION OF A γπ PAIR

被引：0

作者：

Duplancic, G. ^{[1
]}

Passek-Kumericki, K. ^{[1
]}

Pire, B. ^{[2
]}

Szymanowski, L. ^{[3
]}

Wallon, S. ^{[4
]}

机构：

[1] Rudjer Boskovic Inst, Theoret Phys Div, Zagreb 10002, Croatia

[2] Univ Paris Saclay, CNRS, Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France

[3] Natl Ctr Nucl Res NCBJ, Pasteura 7, PL-02093 Warsaw, Poland

[4] Univ Paris Saclay, Univ Paris Sud, CNRS, Lab Phys Theor,UMR 8627, F-91405 Orsay, France

来源：

ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT | 2019年 / 12卷 / 04期

基金：

欧盟地平线“2020”;

关键词：

ELECTROPRODUCTION;

D O I：

10.5506/APhysPolBSupp.12.855

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study in the framework of collinear QCD factorization the photoproduction of a gamma pi pair with a large invariant mass and a small transverse momentum, as a new way to access generalized parton distributions (GPDs). In the kinematics of JLab 12 GeV, we demonstrate the feasibility of this measurement and show the extreme sensitivity of the unpolarized cross section to the axial quark GPDs.

引用

页码：855 / 860

页数：6

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