Single Spin Asymmetry in e+p^\uparrow -> e+J/\psi+X

TL;DR

This paper investigates the single spin asymmetry in low virtuality electroproduction of J/psi particles, proposing it as a probe for the elusive gluon Sivers function within the color evaporation model.

Contribution

It introduces the use of J/psi electroproduction SSA as a novel method to explore the gluon Sivers function, advancing understanding of gluon spin effects.

Findings

SSA can serve as a sensitive probe for the gluon Sivers function

Electroproduction of J/psi provides insights into gluon transverse momentum distributions

The study offers a new approach to investigate gluon spin phenomena

Abstract

We report on a recent investigation of the single spin asymmetry (SSA) in low virtuality electroproduction of $J/\psi$ in color evaporation model. We show that this can be used as a probe for the still unknown gluon Sivers function.