On the distribution of partons in the transverse plane

Abstract

Elastic nucleon form factors constrain the spatial distribution of quarks in the impact parameter plane. A recent analysis found that the average impact parameter of quarks strongly depends on their longitudinal momentum, and obtained an estimate of the orbital angular momentum carried by valence quarks in the proton.

Comments: 4 pages, 2 figures. Talk given at the International Conference on QCD and Hadronic Physics, Beijing, China, 2005