Study of Spin through Gluon Poles

I.V. Anikin , L. Szymanowski , O.V. Teryaev , N. Volchanskiy

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classification ✦ hep-ph

keywords spindrell-yangluonpolesprocesssingletwist-3asymmetries

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Based on the use of contour gauge and collinear factorization, we propose a new set of single spin asymmetry which can be measured in polarized Drell-Yan process by SPD@NICA. We stress that the discussed single transverse spin asymmetries exist owing to the gluon poles manifesting in the twist-3 or twist-2$\otimes$twist-3 parton distributions related to the transverse-polarized Drell-Yan process.

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Study of Spin through Gluon Poles

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