Document Type
Article
Department/Program
Physics
Journal Title
Physics Letters B
Pub Date
2010
Volume
684
Issue
3-Feb
First Page
106
Abstract
We present a Study of high energy photodisintegration of proton-pairs through the gamma + (3)He -> p + p + n channel. Photon energies, E(gamma), from 0.8 to 4.7 GeV were used in kinematics corresponding to a proton pair with high relative momentum and a neutron nearly at rest. The s(-11) scaling of the cross section, as predicted by the constituent counting rule for two nucleon photodisintegration, was observed for the first time. The onset of the scaling is at a higher energy and the cross section is significantly lower than for deuteron (pn pair) photoclisintegration. For E(gamma) below the scaling region, the scaled cross section was found to present a strong energy-dependent structure not observed in deuteron photodisintegration. (C) 2010 Elsevier B.V. All rights reserved.
Recommended Citation
Camsonne, A.; de Jager, C. W.; Gilman, R.; and Moffit, B., Hard photodisintegration of a proton pair (2010). Physics Letters B, 684(3-Feb), 106-109.
10.1016/j.physletb.2009.12.050
DOI
10.1016/j.physletb.2009.12.050
