2013/04/30 by Rohini M. Godbole, Anuradha Misra, Asmita Mukherjee +2 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.88.014029
published as Phys. Rev. D 88, 014029 (2013) · 12 pages, 6 figures. arXiv admin note: text overlap with arXiv:1201.1066
openalex publication_date 2013/07/18 · arxiv created 2013/07/29 · arxiv updated 2013/07/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We extend our analysis of transverse single spin asymmetry (SSA) in electroproduction of J/ψ to include the effect of the scale evolution of the transverse momentum dependent (TMD) parton distribution functions and gluon Sivers function. We estimate SSA for JLab, HERMES, COMPASS, and eRHIC energies using the color evaporation model of charmonium production, using an analytically obtained approximate solution of TMD evolution equations discussed in the literature. We find that there is a reduction in the asymmetry compared with our predictions for the earlier case considered by us, wherein the Q2 dependence came only from DGLAP evolution of the unpolarized gluon densities and a different parametrization of the TMD Sivers function was used.