Spin Physics Experiments at NICA-SPD with polarized proton and deuteron beams

A.D. Kovalenko; A.P. Nagajcev; A.V. Efremov; A.V. Guskov; D.V. Peshekhonov; I.A. Savin; N.D. Topilin (Drafting Committee); O.V.Teryaev; O.Yu. Shevchenko; V.V. Kukhtin

arxiv: 1408.3959 · v1 · pith:F26ER5LJnew · submitted 2014-08-18 · ✦ hep-ex · hep-ph

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

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V.V. Kukhtin N.D. Topilin (Drafting Committee)

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classification ✦ hep-ex hep-ph

keywords measurementsasymmetriesnucleonspolarizedproductionwillaccessanti-quarks

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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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Off-shell initial state effects and gauge invariance in the Drell-Yan process
hep-ph 2019-06 unverdicted novelty 4.0

Helicity structure functions in Drell-Yan are analyzed in the Parton Reggeization Approach with gauge-invariant inclusion of initial-state transverse momentum, clarifying relations to the TMD Parton Model.