Affiliation:
1. Department of Physics and Astronomy, University of South Carolina, 712 Main Street, Columbia, SC 29208, USA
Abstract
Experimental results on the reactions γd → π0d, γd → pn, γ3 He → ppn, and γ3 He → pd obtained in Hall B at Jefferson Lab at photon energies between 0.3 and 3.0 GeV are discussed. The goal of the measurements is to study the transition between long- and short-range nuclear dynamics, as well as more specific dynamical effects, such as manifestations of three-body mechanisms. Conventional nuclear models can describe the data up to a momentum transfer of ~ 1 ( GeV /c)2. All the studied reactions on deuterium clearly show scaling properties consistent with the predictions of the Constituent Counting Rules. The data on 3 He suggest that the favorable energy range for the study of three-body mechanisms is 0.6 - 0.8 GeV .
Publisher
World Scientific Pub Co Pte Lt
Subject
General Physics and Astronomy,Nuclear and High Energy Physics