Work

Matching between collinear twist-3 and TMD fragmentation function contributions to polarized hyperon production in SIDIS

Year: 2026

Type: article

Abstract: We investigate the consistency between the collinear twist-3 factorization and the transverse-momentum-dependent (TMD) factorization for the transversely polarized hyperon production in semi-inclusive deep inelastic scattering, e p → e Λ ↑ X . In particular, we focus on the contributions from the twist-3 fragmentation functions (FFs) and the TMD polarizing FF in the region of the hyperon’s intermediate transverse momentum P T , Λ QCD ≪ P T ≪ Q , where both frameworks are valid. In this region the polarizing FF can be expressed in terms of the twist-3 FFs including the purely gluonic ones, and the resulting TMD factorization formula in the Ji-Ma-Yuan scheme for e p → e Λ ↑ X agrees with the small- P T limit of the corresponding twist-3 cross section. This matching of the two calculations indicates that the two frameworks describe the same effect in quantum chromodynamics (QCD) and provide complementary frameworks for the process in different kinematic regions.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/vmn1-cdl9

Authors: Riku Ikarashi, Yuji Koike, Shinsuke Yoshida

Institutions: Niigata University, South China Normal University

Language: English

Topic: Quantum Chromodynamics and Particle Interactions

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funder: Japan Society for the Promotion of Science

Awards: Understanding of mysterious phenomena caused by QCD higher-twist effects and exploration of new features of hadron structures, Quantitative understanding of mysterious phenomena caused by quark-gluon correlations in hadrons