arXiv:hep-ph/9804284·v4·High Energy Physics — Phenomenology
Positivity Constraints for off-Forward Parton Distributions
B. Pire🇫🇷 · J. Soffer🇫🇷 · O. Teryaev🇫🇷
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.
Comments: LaTeX, 10 pages; The extended discussion for various definitions