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.

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)

References in corpus (4)

• The pion form factor: Sudakov suppressions and intrinsic transverse momentum
• On the Nucleon Distribution Amplitude: The Heterotic Solution
• Proton-Proton Near-Forward Hard Elastic Scattering
• Heterotic Approach to the Nucleon Distribution Amplitude

Cited by in corpus (9)

• Measurements of the Meson-Photon Transition Form Factors of Light Pseudoscalar Mesons at Large Momentum Transfer
• The $\pi \gamma$ transition form factor and the pion wave function
• Virtual Compton Scattering Off Protons at Moderately Large Momentum Transfer
• Approach to Perturbative Results in the N-Delta Transition
• A perturbative approach to $B$ decays into two $\pi$ mesons
• Worldline approach to Sudakov-type form factors in non-Abelian gauge theories
• Electromagnetic Pion and Nucleon Form Factors at Positive and Negative $q^2$ Within the Framework of Quark-Gluon Strings Model
• Transverse momentum dependence in the perturbative calculation of pion form factor
• Light-cone distribution amplitudes of the nucleon and $\Delta$ baryon