Abstract
Exclusive neutral-pion electroproduction was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections and structure functions , and as functions of were obtained over a wide range of and . The data are compared with Regge and handbag theoretical calculations. Analyses in both frameworks find that a large dominance of transverse processes is necessary to explain the experimental results. For the Regge analysis it is found that the inclusion of vector meson rescattering processes is necessary to bring the magnitude of the calculated and measured structure functions into rough agreement. In the handbag framework, there are two independent calculations, both of which appear to roughly explain the magnitude of the structure functions in terms of transversity generalized parton distributions.
18 More- Received 1 May 2014
- Corrected 29 August 2014
DOI:https://doi.org/10.1103/PhysRevC.90.025205
©2014 American Physical Society
Corrections
29 August 2014