Purely-Nonperturbative Composite Operators and Parton Distributions

Details Purely-Nonperturbative Composite Operators and Parton Distributions Purely-Nonperturbative Composite Operators and Parton Distributions

1997-05-14

arxiv.org/abs/hep-ph/9705317v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, latex, no figures

Scientific paper

A class of purely-nonperturbative (PNP) composite operators is defined in Quantum Chromodynamics, which is perturbative scheme and scale independent and are useful to describe the internal structure of a strong interacting system. The operator product expansion in terms of the new operators cleanly separates the perturbative and nonperturbative physics without introducing any factorization scale. A number of PNP observables of the nucleon is briefly discussed including the PNP parton distributions. In particular, the fraction of the nucleon momentum carried by the purely-nonperturbative gluons is found to be around 16%.

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