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arXiv · 1110.6102

Hadron tomography through Wigner distributions

Cedric Lorce·Barbara Pasquini
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Abstract

We study the Wigner functions of the nucleon which provide multidimensional images of the quark distributions in phase space and combine in a single picture all the information contained in the generalized parton distributions (GPDs) and the transverse-momentum dependent parton distributions (TMDs). In particular, we present results for the distribution of unpolarized quarks in a longitudinally polarized nucleon obtained in a light-cone constituent quark model. Treating the Wigner distribution as it was a classical distribution, we obtain the quark orbital angular momentum and compare it with alternative definitions given in terms of the GPDs and the TMDs.

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Cedric Lorce, Barbara Pasquini. 2011-10-27. Hadron tomography through Wigner distributions. https://doi.org/10.1393/ncc%2Fi2012-11176-x

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