Pion helicity structure and its consequences for the hard scattering form factor
- Physics Department, Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213 (United States)
In a study of the elastic pion form factor for large momentum transfers based on a modified perturbative QCD (PQCD) approach we have included helicity components that are customarily neglected. Along with the inclusion of transverse momentum, this gives a large suppression of the form factor from the prediction of the original hard scattering model based on PQCD in the {ital Q}{sup 2} domain where experimental data are available. We conclude that nonperturbative contributions will dominate in this region. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- University of Maryland
- DOE Contract Number:
- FG02-93ER40762
- OSTI ID:
- 388476
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 9 Vol. 54; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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