Speaker
Rajesh Sangem
(Istituto Nazionale di Fisica Nucleare)
Description
Among the eight leading twist gluon TMDs, gluon Sivers function (GSF) has been the limelight in hadron physics. GSF is not yet known fully, though attempts have been made. The $J/\psi$ production has been advertised to probe the gluon TMDs. In this talk, we present the calculation of single-spin asymmetry (SSA) in $pp^\uparrow\to J/\psi+X$ process to probe the unknown GSF within the generalized parton model (GPM) framework. The non-relativistic QCD (NRQCD) framework is employed for calculating color singlet and color octet states of $J/\psi$. Finally, we compare the unpolarized differential cross section with PHENIX and CDF data in the low $P_T$ region.
Primary author
Rajesh Sangem
(Istituto Nazionale di Fisica Nucleare)
