Small-x Evolution of the Gluon Generalized Parton Distribution Eg of the Nucleon

被引：8

作者：

Hatta, Yoshitaka ^{[1
,2
]}

Zhou, Jian ^{[3
]}

机构：

[1] Brookhaven Natl Lab, Phys Dept, Bldg 510A, Upton, NY 11973 USA

[2] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA

[3] Shandong Univ QingDao, Inst Frontier & Interdisciplinary Sci, Key Lab Particle Phys & Particle Irradiat MOE, Qingdao 266237, Peoples R China

来源：

PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 25期

关键词：

QUARK; SPIN;

D O I：

10.1103/PhysRevLett.129.252002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the small-x evolution equation for the gluon generalized parton distribution E-g of the nucleon. It is shown that E-g at vanishing skewness exhibits the Regge behavior identical to the Balitsky-Fadin-Kuraev-Lipatov pomeron despite its association with nucleon helicity-flip processes. We also consider the effect of gluon saturation and demonstrate that E-g gets saturated in the same way as its helicity-nonflip counterpart H-g. Our result has a direct impact on the modeling of E-g as well as the small-x contribution to nucleon spin sum rules.

引用

页数：6

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