Document Type
Article
Publication Date
8-2018
DOI
10.1103/PhysRevC.98.025203
Publication Title
Physical Review C
Volume
98
Issue
2
Pages
025203 (19 pp.)
Abstract
New results on the single-differential and fully integrated cross sections for the process γvp → p'π+π− are presented. The experimental data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the kinematic region of the reaction invariant mass W from 1.3 to 1.825 GeV and the photon virtuality Q2 from 0.4 to 1.0 GeV2. The cross sections were obtained in narrow Q2 bins (0.05 GeV2) with the smallest statistical uncertainties achieved in double-pion electroproduction experiments to date. The results were found to be in agreement with previously available data where they overlap. A preliminary interpretation of the extracted cross sections, which was based on a phenomenological meson-baryon reaction model, revealed substantial relative contributions from nucleon resonances. The data offer promising prospects to improve knowledge on the Q2 evolution of the electrocouplings of most resonances with masses up to ∼1.8 GeV.
Original Publication Citation
Fedotov, G. V., ..., Charles, G., ..., Khachatryan, M., ..., . . . Zhao, Z. W. (2018). Measurements of the γvp→p′π+π− cross section with the CLAS detector for 0.4 GeV2 < Q2 2and 1.3 GeV < WPhysical Review C, 98(2), 025203. doi:10.1103/PhysRevC.98.025203
Repository Citation
Fedotov, G. V.; Skorodumina, Iu. A.; Burkert, V. D.; Gothe, R. W.; Charles, G.; Khachatryan, M.; Klein, A.; Prok, Y.; Zhao, Z. W.; and CLAS Collaboration, "Measurements of the γv p → p'π+π− Cross Section with the CLAS Detector for 0.4 GeV2 < Q2 < 1.0 GeV2 and 1.3 GeV < W < 1.825 GeV" (2018). Physics Faculty Publications. 244.
https://digitalcommons.odu.edu/physics_fac_pubs/244
Comments
Article is open access under the terms of the Creative Commons Attribution license.