On the physics potential to study the gluon content of proton and deuteron at NICA SPD
Résumé
The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear Research (JINR, Dubna, Russia). The physics program of the experiment is based on collisions of longitudinally and transversely polarized protons and deuterons at s up to 27 GeV and luminosity up to 10 32 cm −2 s −1 . SPD will operate as a universal facility for the comprehensive study of the unpolarized and polarized gluon content of the nucleon, using complementary probes such as: charmonia, open-charm, and prompt-photon production processes.The aim of this work is to provide a thorough review of the physics objectives that can potentially be addressed at SPD, underlining related theoretical aspects and discussing relevant experimental results when available. Among different pertinent phenomena particular attention is drawn to the study of the gluon helicity, gluon Sivers and Boer-Mulders functions in the nucleon, as well as the gluon transversity distribution in the deuteron, via the measurement of single and double spin asymmetries.
Mots clés
QCD
Polarized hadron collisions
TMD factorization
Gluon TMD PDFs
Proton and deuteron spin structure
Spin asymmetries
p: polarized beam
deuteron: polarized beam
polarization: longitudinal
polarization: transverse
gluon: helicity
photon: production
spin: asymmetry
photon: direct production
nucleon: structure function
NICA
experimental results
Sivers function
transversity
charmonium: production
Dubna Lab
nucleus
charm
proposed experiment