Spin Physics Experiments at NICA-SPD with polarized proton and deuteron beams
I.A. Savin, A.V. Efremov, D.V. Peshekhonov, A.D. Kovalenko,, O.V.Teryaev, O.Yu. Shevchenko, A.P. Nagajcev, A.V. Guskov, V.V. Kukhtin and, N.D. Topilin (Drafting Committee)
TL;DR
This paper proposes measurements of asymmetries in Drell-Yan pairs, J/ 4 and direct photons using polarized proton and deuteron beams at NICA-SPD to explore nucleon structure at the quark level.
Contribution
It introduces a comprehensive experimental program to measure various asymmetries, providing detailed insights into nucleon PDFs at the QCD twist-two level.
Findings
Access to all leading twist collinear and TMD PDFs of quarks and anti-quarks.
Simultaneous measurements of Drell-Yan, J/ 4, and direct photons.
Minimal systematic errors in testing the quark-parton model.
Abstract
We propose to perform measurements of asymmetries of the Drell-Yan (DY) pairs production in collisions of non-polarized, longitudinally and transversally polarized protons and deuterons which provide an access to all leading twist collinear and TMD PDFs of quarks and anti-quarks in nucleons. The measurements of asymmetries in production of J/\Psi and direct photons will be performed as well simultaneously with DY using dedicated triggers. The set of these measurements will supply complete information for tests of the quark-parton model of nucleons at the QCD twist-two level with minimal systematic errors.
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