First analysis of world polarized DIS data with small-x helicity evolution

被引：21

作者：

Adamiak, Daniel ^{[1
]}

Kovchegov, Yuri, V ^{[1
]}

Melnitchouk, W. ^{[2
]}

Pitonyak, Daniel ^{[3
]}

Sato, Nobuo ^{[2
]}

Sievert, Matthew D. ^{[4
]}

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] Jefferson Lab, Newport News, VA 23606 USA

[3] Lebanon Valley Coll, Dept Phys, Annville, PA 17003 USA

[4] New Mexico State Univ, Dept Phys, Las Cruces, NM 88003 USA

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 03期

基金：

美国国家科学基金会;

关键词：

DEEP-INELASTIC-SCATTERING; STRUCTURE-FUNCTION G(1); DEPENDENT STRUCTURE-FUNCTION; NONLINEAR GLUON EVOLUTION; COLOR GLASS CONDENSATE; SPIN STRUCTURE; POMERANCHUK SINGULARITY; SINGLET CONTRIBUTION; REGGE ASYMPTOTICS; PROTON;

D O I：

10.1103/PhysRevD.104.L031501

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a Monte Carlo based analysis of the combined world data on polarized lepton-nucleon deep-inelastic scattering at small Bjorken x within the polarized quark dipole formalism. We show for the first time that double-spin asymmetries at x < 0.1 can be successfully described using only small-x evolution derived from first-principles QCD, allowing predictions to be made for the g(1) structure function at much smaller x. Anticipating future data from the Electron-Ion Collider, we assess the impact of electromagnetic and parity-violating polarization asymmetries on g(1) and demonstrate an extraction of the individual flavor helicity parton distribution functions at small x.

引用

页数：8

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