Systematic description of hadron's response to nonlocal QCD probes: Froissart-Gribov projections in analysis of deeply virtual Compton scattering

被引：1
作者：
Semenov-Tian-Shansky, Kirill M. [1 ,2 ,3 ]
Sznajder, Pawel [4 ]
机构：
[1] Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea
[2] Petersburg Nucl Phys Inst, Kurchatov Inst, Natl Res Ctr, Gatchina 188300, Russia
[3] Natl Res Univ, Higher Sch Econ, St Petersburg 194100, Russia
[4] NCBJ, Natl Ctr Nucl Res, PL-02093 Warsaw, Poland
来源：
PHYSICAL REVIEW D | 2024年 / 109卷 / 05期
基金：
新加坡国家研究基金会;
关键词：
GENERALIZED PARTON DISTRIBUTIONS; VECTOR-MESON ELECTROPRODUCTION; DUAL PARAMETRIZATION; TOMOGRAPHY; PRESSURE;
D O I：
10.1103/PhysRevD.109.054010
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We revisit the application of the Froissart-Gribov (FG) projections in the analysis of amplitudes for deeply virtual Compton scattering (DVCS), providing essential information on generalized parton distributions (GPDs). The pivotal role of these projections in a systematic description of a hadron's response to the stringlike QCD probes characterized by different values of angular momentum J is emphasised. For the first time, we establish a relationship between the FG projections and GPDs for spin -1/2 targets, and we investigate these quantities in various GPD models. Finally, we provide the first numerical estimates for the FG projections based on the DVCS amplitudes directly extracted from experimental data. We argue the method of the FG projections deserves a broad application in the DVCS phenomenology.
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收藏
页数：21
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