Document Type

Article

Publication Date

2014

DOI

10.1103/PhysRevC.90.025205

Publication Title

Physical Review C

Volume

90

Issue

2

Pages

025205 (1-26)

Abstract

Exclusive neutral-pion electroproduction (ep → e'p'π0 was measured at Jefferson Lab with a 5.75-GeV electron beam and the CLAS detector. Differential cross sections d4σ/dtdQ2dxBdΦπ and structure functions σT+ ϵσL, σTT, and σLT as functions of t were obtained over a wide range of Q2 and xB. 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.

Comments

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© American Physical Society

Original Publication Citation

Bedlinskiy, I., Kubarovsky, V., Niccolai, S., Stoler, P., Adhikari, K. P., Anderson, M. D., . . . Collaboration, C. (2014). Exclusive πo electroproduction at W > 2 GeV with CLAS. Physical Review C, 90(2), 025205. doi:10.1103/PhysRevC.90.025205

ORCID

0000-0003-2243-6836 (Kuhn)

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