Once More on the Applicability of Perturbative QCD to Elastic Form Factors
The long-standing problem of the applicability of perturbative QCD to hadronic elastic form factors is discussed. The basic ingredients both of the asymptotic large-Q2 treatment and of the QCD sum rule approach are analyzed. The main conclusion is that for accessible energies and momentum transfers the soft (nonperturbative) contributions dominate over those due to the hard quark rescattering subprocesses.
- Research Organization:
- Thomas Jefferson Lab National Accelerator Facility
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 954330
- Report Number(s):
- CEBAF-TH-92-18
- Country of Publication:
- United States
- Language:
- English
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