J / ψ photoproduction and polarization in e + p collisions in the improved color evaporation model
Year: 2024
Type: article
Abstract: We calculate the production and polarization of direct J / ψ in the improved color evaporation model in e + p photoproduction. We present the production as functions of transverse momentum, mass of the hadronic final state, and inelasticity. We also present the polarization parameters λ ϑ , λ φ , and λ ϑ φ in the helicity and the Collins-Soper frames, as well as the frame-invariant polarization parameter λ ˜ as a function of transverse momentum and inelasticity. We find agreement with both J / ψ unpolarized cross sections and the invariant polarization parameters as a function of p T . Published by the American Physical Society 2024
Authors: Vincent Cheung, Ramona Vogt
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4404320387