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Positivity Constraints for off-Forward Parton Distributions

arXiv:hep-ph/9804284 · doi:10.1007/s100529901063

Abstract

Off-Forward Parton Distributions (OFPD's) are new hadronic objects which may be measured in various exclusive reactions. We derive non-trivial positivity constraints for them that should allow to get extra restrictions for model inputs.

LaTeX, 10 pages; The extended discussion for various definitions