Scaling Tests of the Cross Section for Deeply Virtual Compton Scattering

Authors

C. Muñpz Camacho
A. Camsonne
M. Mazouz
C. Ferdi
G. Gavalian, Old Dominion University
E. Kuchina
M. Amaryan, Old Dominion University
K. A. Aniol
M. Beaumel
H. Benaoum
D. Hayes, Old Dominion University
C. E. Hyde-Wright, Old Dominion UniversityFollow
H. Ibrahim, Old Dominion University
P. E. Ulmer, Old Dominion University
L. B. Weinstein, Old Dominion UniversityFollow

Document Type

Article

Publication Date

12-2006

DOI

10.1103/PhysRevLett.97.262002

Publication Title

Physical Review Letters

Volume

97

Issue

26

Pages

262002 (5pg.)

Abstract

We present the first measurements of the ep → epγ cross section in the deeply virtual Compton scattering (DVCS) regime and the valence quark region. The Q² dependence (from 1.5 to 2.3 GeV²) of the helicity-dependent cross section indicates the twist-2 dominance of DVCS, proving that generalized parton distributions (GPDs) are accessible to experiment at moderate Q². The helicity-independent cross section is also measured at Q²=2.3 GeV². We present the first model-independent measurement of linear combinations of GPDs and GPD integrals up to the twist-3 approximation.

Original Publication Citation

Camacho, C., Camsonne, A., Mazouz, M., Ferdi, C., Gavalian, G., Kuchina, E., . . . Zhu, L. (2006). Scaling tests of the cross section for deeply virtual compton scattering. Physical Review Letters, 97(26), 262002. doi:10.1103/PhysRevLett.97.262002

ORCID

0000-0001-7282-8120 (Hyde), 0000-0001-5416-2900 (Weinstein)

Repository Citation

Camacho, C. Muñpz; Camsonne, A.; Mazouz, M.; Ferdi, C.; Gavalian, G.; Kuchina, E.; Amaryan, M.; Aniol, K. A.; Beaumel, M.; Benaoum, H.; Hayes, D.; Hyde-Wright, C. E.; Ibrahim, H.; Ulmer, P. E.; and Weinstein, L. B., "Scaling Tests of the Cross Section for Deeply Virtual Compton Scattering" (2006). Physics Faculty Publications. 91.
https://digitalcommons.odu.edu/physics_fac_pubs/91