Exclusive electroproduction and off-diagonal parton distributions

Details Exclusive electroproduction and off-diagonal parton distributions Exclusive electroproduction and off-diagonal parton distributions

1998-11-02

arxiv.org/abs/hep-ph/9811220v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figures, LaTeX2e. Talk given at the Fourth Workshop on Quantum Chromodynamics, Paris, France, 1-6 June 1998

Scientific paper

Off-diagonal parton distributions occur in several hard exclusive reactions. They extend the study of hadron structure beyond what can be learned from ordinary distributions and have a particularly rich spin structure. The hard scattering subprocesses in electroproduction of mesons and of real photons satisfy helicity selection rules, which provide powerful tools to test leading-twist dominance at a given value of the hard scale.

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