Quark spin-orbit correlations in spin-0 and spin-1 mesons using the light-front quark model
Investigation of quark spin-orbit correlations.
R. Acharyya, S. Puhan and H. Dahiya
Phys. Rev. D 110 (2024)
May 15, 2024
Abstract
We have investigated the spin-orbital angular momentum correlations for the active quark inside the light and heavy mesons for both the spin-0 and spin-1 cases. These correlations can be derived from the generalised transverse momentum dependent distributions (GTMDs) as well as the generalised parton distributions (GPDs). We employ the overlap representation of light-front wave functions in the light-front quark model (LFQM) to calculate our analytical results. The dependence of spin-orbit correlations (SOCs) on the longitudinal momentum fraction x as well as the transverse momentum dependence k_perp has been graphically presented. Even though the SOCs have already been studied for the spin-0 pions and kaons in other approaches, no calculations for the other light and heavy spin-0 mesons have been reported in literature. Further, the correlations for any of the light and heavy spin-1 mesons have been studied for the first time in the present work.
Summary
First study of quark spin-orbit correlations in light and heavy spin-1 mesons. Extends previous spin-0 analysis to include rho, J/psi, and Upsilon mesons using GTMDs and GPDs in the LFQM framework.
Authors: R. Acharyya, S. Puhan and H. Dahiya
Published in: Phys. Rev. D 110 (2024)

