Polarized Semi-Inclusive Deep-Inelastic Scattering at Next-to-Next-to-Leading Order in QCD

被引：6

作者：

Bonino, Leonardo ^{[1
]}

Gehrmann, Thomas ^{[1
]}

Loechner, Markus ^{[1
]}

Schoenwald, Kay ^{[1
]}

Stagnitto, Giovanni ^{[2
,3
]}

机构：

[1] Univ Zurich, Phys Inst, Winterthurerstr 190, CH-8057 Zurich, Switzerland

[2] Univ Milano Bicocca, Piazza Sci 3, I-20216 Milan, Italy

[3] INFN, Piazza Sci 3, I-20216 Milan, Italy

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 133卷 / 21期

基金：

欧洲研究理事会; 瑞士国家科学基金会;

关键词：

PARTON DISTRIBUTIONS; SPIN STRUCTURE; SPLITTING FUNCTIONS; NUCLEON; PROTON; RENORMALIZATION; G(1)(P); QUARK; LHC;

D O I：

10.1103/PhysRevLett.133.211904

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Semi-inclusive hadron production in longitudinally polarized deep-inelastic lepton-nucleon scattering is a powerful tool for resolving the quark flavor decomposition of the proton's spin structure. We present the full next-to-next-to-leading order QCD corrections to the coefficient functions of polarized semi-inclusive deep-inelastic scattering (SIDIS) in analytical form, enabling the use of SIDIS measurements in precision studies of the proton spin structure. The numerical impact of these corrections is illustrated by a comparison with data of polarized single-inclusive hadron spectra from the DESY HERMES and CERN COMPASS experiments.

引用

页数：7

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