1210.1046 (Rohini M. Godbole et al.)

Gluon Sivers Function and Single Spin Asymmetry in $e+p^\uparrow
\rightarrow e+J/ψ+ X$    [PDF]

Rohini M. Godbole, Anuradha Misra, Asmita Mukherjee, Vaibhav S. Rawoot

We propose measurement of transverse single spin asymmetry (SSA) in charmonium production as a probe of gluon Sivers function. We estimate SSA in low virtuality electroproduction of $J/\psi $ using color evaporation model of charmonium production and existing models of the gluon Sivers function and find sizable asymmetry at JLab, HERMES, COMPASS and eRHIC energies.

View original: http://arxiv.org/abs/1210.1046