Workshop on Resummation, Evolution, Factorization (REF 2019)

Single-spin asymmetries in $p^\uparrow p\rightarrow J/\psi$ collision within a TMD approach

26 nov 2019, 09:30

20m

Aula Foscolo (University of Pavia)

Tuesday 1

Relatore

Rajesh Sangem (Istituto Nazionale di Fisica Nucleare)

Descrizione

Quarkonium production has been advertised as a tool to probe the gluon TMDs. Among the eight gluon TMDs, gluon Sivers function has been receiving paramount of interest both theoretically and experimentally. We study the single-spin asymmetry (SSA) in proton-proton collision process in $J/\psi$ production by employing the generalized parton model (GPM), and compare SSA with PHENIX data. We discuss how the singularities coming from color octet states can be cured in a simple way, which leads to finite cross section in the low-$p_T$ region.

Materiali di presentazione

REF19Rajesh.pdf