Publication
Title
Probing the gluon Sivers function in and
Author
Abstract
We present a study of transverse single-spin asymmetries (SSAs) in p(up arrow)p -> J/psi X and p(up arrow)p -> DX within the framework of the generalized parton model (GPM), which includes both spin and transverse momentum effects, and show how they can provide useful information on the still almost unknown gluon Sivers function. Moreover, by adopting a modified version of this model, named color gauge invariant (CGI) GPM, we analyze the impact of the initial- and final-state interactions on our predictions. As a consequence, we find that these two processes are sensitive to different gluon Sivers functions, which can be expressed as linear combinations of two distinct, universal gluon distributions. We therefore define proper observables which could allow for a separate extraction of these two independent Sivers functions. At the same time, we show how it would be possible to discriminate between the GPM and the CGI-GPM approaches by comparing the corresponding estimates of SSAs with present and future experimental results at RHIC.
Language
English
Source (journal)
PHYSICAL REVIEW D
Publication
2017
DOI
10.1103/PHYSREVD.96.036011
Volume/pages
96 :3 (2017) , 17 p.
Article Reference
036011
ISI
000408348300006
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (open access)
UAntwerpen
Faculty/Department
Research group
Project info
3DSPIN: 3-Dimensional Maps of the Spinning Nucleon
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identifier
Creation 03.10.2017
Last edited 09.10.2023
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