Intrinsic Transverse Size Effect
Abstract
Two recently proposed concepts to improve the perturbative calculation of exclusive amplitudes, gluonic radiative corrections (Sudakov factor) and confinement size effects (intrinsic transverse momentum) are combined to study the neutron magnetic form factor in the space-like region. We find that nucleon distribution amplitudes modelled on the basis of current QCD sum rules indicate overlap with the existing data at the highest measured values of momentum transfer. However, sizeable higher-order perturbative corrections (K-factor) and/or higher-twist contributions cannot be excluded, although they may be weaker than in the proton case.
Cite
@article{arxiv.hep-ph/9407250,
title = {Intrinsic Transverse Size Effect},
author = {J. Bolz and R. Jakob and P. Kroll and M. Bergmann and N. G. Stefanis},
journal= {arXiv preprint arXiv:hep-ph/9407250},
year = {2009}
}
Comments
12 pages LATEX, 4 figures as compressed uu-encoded PS-file, preprint University of Wuppertal WU-B-94-16, University of Bochum RUB-TPII-04/94 (some typos eliminated)