Transverse (spin) structure of hadrons

Burkardt, M. (2012) Transverse (spin) structure of hadrons. Il nuovo cimento C, 35 (2). pp. 261-268. ISSN 1826-9885

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Parton distributions in impact parameter space, which are obtained by Fourier transforming GPDs, exhibit a significant deviation from axial symmetry when the target and/or quark are transversely polarized. Connections between this deformation and transverse-single-spin asymmetries as well as with quark-gluon correlations are discussed. The sign of transverse deformation of impact-parameter– dependent parton distributions in a transversely polarized target can be related to the sign of the contribution from that quark flavor to the nucleon anomalous magnetic moment. Therefore, the signs of the Sivers function for u and d quarks, as well as the signs of quark-gluon correlations embodied in the polarized structure function g2 can be understood in terms of the proton and neutron anomalous magnetic moments.

Item Type: Article
Uncontrolled Keywords: Protons and neutrons
Subjects: 500 Scienze naturali e Matematica > 530 Fisica
Depositing User: Marina Spanti
Date Deposited: 19 Apr 2020 14:09
Last Modified: 19 Apr 2020 14:09

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