Exclusive Pion-production and the Relation to Transversity

Details Exclusive Pion-production and the Relation to Transversity Exclusive Pion-production and the Relation to Transversity

2008-07-15

arxiv.org/abs/0807.2301v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, to appear in the Proceedings of the XVI International Workshop on Deep-Inelastic Scattering and Related Su

Scientific paper

Exclusive $\pi^0$ electroproduction from nucleons is suggested for extracting the tensor charge and other quantities related to transversity from experimental data. This process isolates C-parity odd and chiral odd combinations of t-channel exchange quantum numbers. In a hadronic picture it connects the meson production amplitudes to C-odd Regge exchanges with final state interactions. In a description based on partonic degrees of freedom, the helicity structure for this C-odd process relates to the quark helicity flip, or chiral odd generalized parton distributions.

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