Pion Helicity Structure And Its Consequence For The Hard Scattering Form Factor
高能物理 - 唯象学
2009-10-28 v1
摘要
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 domain where experimental data are available. We conclude that nonperturbative contributions will dominate in this region.
引用
@article{arxiv.hep-ph/9608252,
title = {Pion Helicity Structure And Its Consequence For The Hard Scattering Form Factor},
author = {Siwen Wang and Leonard S. Kisslinger},
journal= {arXiv preprint arXiv:hep-ph/9608252},
year = {2009}
}
备注
8 pages, Latex, 2 Postscript figures, uses epsf.sty. To appear in Phys. Rev. D54, 10/1/96