Document Type
Article
Article Version
Publisher's PDF
Publication Date
1-1-2001
Abstract
The differential cross section, dσ/dt, for ρ0 meson photoproduction on the proton above the resonance region was measured up to a momentum transfer −t=5GeV2 using the CLAS detector at the Thomas Jefferson National Accelerator Facility. The ρ0 channel was extracted from the measured two charged-pion cross sections by fitting the π+π− and pπ+ invariant masses. The low momentum transfer region shows the typical diffractive pattern expected from Reggeon exchange. The flatter behavior at large −t cannot be explained solely in terms of QCD-inspired two-gluon exchange models. The data indicate that other processes, like quark interchange, are important to fully describe ρ photoproduction.
Publication Title
Physical Review Letters
Repository Citation
Battaglieri, M.; Biselli, Angela; and CLAS Collaboration, "Photoproduction of the ρ0 Meson on the Proton at Large Momentum Transfer" (2001). Physics Faculty Publications. 105.
https://digitalcommons.fairfield.edu/physics-facultypubs/105
Published Citation
M. Battaglieri et al. [CLAS Collaboration], "Photoproduction of the ρ0 Meson on the Proton at Large Momentum Transfer", Physical Review Letters 87.17 (2001) DOI: 10.1103/PhysRevLett.87.172002
DOI
10.1103/PhysRevLett.87.172002
Peer Reviewed
Comments
Copyright American Physical Society Publisher final version available at http://prl.aps.org/pdf/PRL/v87/i17/e172002