Twist-3 gluon contribution to Sivers asymmetry in J/ψ production in semi-inclusive deep inelastic scattering

被引：3
|
作者：
Chen, Longjie [1 ]
Xing, Hongxi
Yoshida, Shinsuke
机构：
[1] South China Normal Univ, Inst Quantum Matter, Key Lab Atom & Subatom Struct & Quantum Control MO, Guangzhou 510006, Peoples R China
来源：
PHYSICAL REVIEW D | 2023年 / 108卷 / 05期
基金：
中国国家自然科学基金;
关键词：
SINGLE-SPIN; POLARIZATION; QCD;
D O I：
10.1103/PhysRevD.108.054021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We carry out the first calculation for the twist-3 gluon contribution to the single transverse-spin asymmetry (SSA) in J/psi production in semi-inclusive deep inelastic scattering. Our result shows that the J/psi SSA is an ideal observable to pin down the C-even type twist-3 gluon distribution that has a direct relationship with the gluon transverse-momentum-dependent distribution function. We also perform some numerical simulations of the J/psi SSA for the kinematics accessible at the future electron-ion-collider experiment. For color-singlet contribution, the hadronization effect of J/psi is completely canceled at the level of the SSA, and the spin-dependent structure functions directly reflect the behavior of the C-even twist-3 gluon distribution.
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页数：19
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