Hard Photodisintegration of a Proton Pair

Authors

I. Pomerantz
N. Bubis
K. Allada
A. Beck
B. L. Berman
W. Boeglin
A. Camsonne
M. Canan, Old Dominion University
K. Chirapatpimol
E. Cisbani

Document Type

Article

Publication Date

2010

DOI

10.1016/j.physletb.2009.12.050

Publication Title

Physics Letters B

Volume

684

Issue

2-3

Pages

106-109

Abstract

We present a study of high energy photodisintegration of proton-pairs through the γ + ³He → p + p + n channel. Photon energies, Eγ , 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) photodisintegration. For Eγ below the scaling region, the scaled cross section was found to present a strong energy-dependent structure not observed in deuteron photodisintegration.

Comments

Open access under CC BY license.

Original Publication Citation

Pomerantz, I., Bubis, N., Allada, K., Beck, A., Beck, S., Berman, B. L., . . . Zheng, X. (2010). Hard photodisintegration of a proton pair. Physics Letters B, 684(2–3), 106-109. doi:https://doi.org/10.1016/j.physletb.2009.12.050

Repository Citation

Pomerantz, I.; Bubis, N.; Allada, K.; Beck, A.; Berman, B. L.; Boeglin, W.; Camsonne, A.; Canan, M.; Chirapatpimol, K.; and Cisbani, E., "Hard Photodisintegration of a Proton Pair" (2010). Physics Faculty Publications. 102.
https://digitalcommons.odu.edu/physics_fac_pubs/102