Helicity correlation of dihadron in current and target fragmentation regions of unpolarized SIDIS

Fuente: arXiv
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Autores principales: Xi, Xue-Qi, Chen, Kai-Bao, Tong, Xuan-Bo, Wei, Shu-Yi, Wu, Jing
Formato: Preprint
Publicado: 2025
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author Xi, Xue-Qi
Chen, Kai-Bao
Tong, Xuan-Bo
Wei, Shu-Yi
Wu, Jing
author_facet Xi, Xue-Qi
Chen, Kai-Bao
Tong, Xuan-Bo
Wei, Shu-Yi
Wu, Jing
contents We study the helicity correlation of two $Λ$ hyperons produced in unpolarized semi-inclusive deep inelastic scatterings (SIDIS), with one hyperon detected in the current fragmentation region and the other in the target fragmentation region. This observable provides direct access to the spin-dependent fragmentation function $G_{1Lq}$ and the spin-dependent fracture function $l_{1q}^L$ even in unpolarized lepton nucleon collisions. Utilizing the perturbative matching of the fracture function, we present numerical predictions for the helicity correlation, revealing significant variations with flavor and kinematic regions. This observable offers a unique way to investigate the spin-dependent hadronization mechanism across both the current and target fragmentation regions. It also provides new insights into the spin transfer effects in SIDIS processes.
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id arxiv_https___arxiv_org_abs_2510_06103
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Helicity correlation of dihadron in current and target fragmentation regions of unpolarized SIDIS
Xi, Xue-Qi
Chen, Kai-Bao
Tong, Xuan-Bo
Wei, Shu-Yi
Wu, Jing
High Energy Physics - Phenomenology
We study the helicity correlation of two $Λ$ hyperons produced in unpolarized semi-inclusive deep inelastic scatterings (SIDIS), with one hyperon detected in the current fragmentation region and the other in the target fragmentation region. This observable provides direct access to the spin-dependent fragmentation function $G_{1Lq}$ and the spin-dependent fracture function $l_{1q}^L$ even in unpolarized lepton nucleon collisions. Utilizing the perturbative matching of the fracture function, we present numerical predictions for the helicity correlation, revealing significant variations with flavor and kinematic regions. This observable offers a unique way to investigate the spin-dependent hadronization mechanism across both the current and target fragmentation regions. It also provides new insights into the spin transfer effects in SIDIS processes.
title Helicity correlation of dihadron in current and target fragmentation regions of unpolarized SIDIS
topic High Energy Physics - Phenomenology
url https://arxiv.org/abs/2510.06103