Gluon Wigner distributions in a light-cone spectator model

2023/12/13 by Chentao Tan, Tan, Chentao, Zhun Lü +1 · 2 citations
Physics and Astronomy · #Quantum Chromodynamics and Particle Interactions #Particle physics theoretical and experimental studies #High-Energy Particle Collisions Research

paper · pdf · doi:10.48550/arxiv.2312.07997

Abstract

We study the gluon Wigner distributions of the proton which are the phase-space distributions containing the most general one-parton information. Using the proton wave functions deduced from a light-cone spectator model that contains the gluonic degree of freedom, we calculate the Wigner distributions of the unpolarized and longitudinally polarized gluon inside the unpolarized/longitudinally polarized proton via the Fock-state overlap representation, respectively. We present the numerical results of the transverse Wigner distributions in which the longitudinal momentum fraction is integrated out. The mixed Wigner distributions as functions of b_y and k_x are also presented. We also provide the canonical gluon orbital angular momentum and spin-orbit correlations deduced from the gluon Wigner distribution.

Cited by

• Gluon generalized transverse momentum dependent parton distributions and Wigner functions of the Proton
• Gluon Wigner distributions with transverse polarization at non-zero skewness

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