Positivity constraints in QCD
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
The density matrix positivity is a natural counterpart of unitarity. The resulting constraints for various parton distribution and correlations are considered. Their compatibility with leading order QCD evolution is guaranteed by the probabilistic interpretation of the latter. In the case of non-forward distributions the positivity constraints naturally imply the symmetric form of the evolution equation.
Cite
@article{arxiv.hep-ph/9808335,
title = {Positivity constraints in QCD},
author = {O. V. Teryaev},
journal= {arXiv preprint arXiv:hep-ph/9808335},
year = {2007}
}
Comments
LaTeX, 7 pages; Talk at XI International Conference (in memory of D.I. Blokhintsev) "Problems of Quantum Field Theory" (Dubna, July 13-17 1998)