Beam spin asymmetry in deeply virtual $π$ production

Details Beam spin asymmetry in deeply virtual $π$ production Beam spin asymmetry in deeply virtual $π$ production

2011-01-31

arxiv.org/abs/1101.6042v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures. Talk at the 19th International Spin Physics Symposium (SPIN2010), Sept.27-Oct.2, 2010, Juelich, Germany

Scientific paper

An interpretation of the beam spin azimuthal asymmetries measured at JLAB in deep exclusive electroproduction of charged and neutral pions is presented. The model combines a Regge pole approach with the effect of nucleon resonances. The $s$- and $u$-channel contributions are described using a dual Bloom-Gilman connection between the exclusive form factors and inclusive deep inelastic structure functions. The results are in agreement with data provided the excitations of nucleon resonances are taken into account.

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