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arXiv · hep-ph/0507281

A toy model for generalised parton distributions

J. R. Cudell·F. Bissey·J. Cugnon·M. Jaminon·J. P. Lansberg·P. Stassart
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Abstract

We give the results of a simple model for the diagonal and off-diagonal valence quark distributions of a pion. We show that structure can be implemented in a gauge-invariant manner. This explicit model questions the validityof the momentum sum rule, and gives an explicit counter-example to the Wandzura-Wilczek ansatz for twist-3 GPD's.

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J. R. Cudell, F. Bissey, J. Cugnon, M. Jaminon, J. P. Lansberg, P. Stassart. 2005-07-25. A toy model for generalised parton distributions. https://doi.org/10.1063/1.1961043

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