Publications
Publication Information
| Title | Measurements of the gamma_v p --> p' p^+ p^- cross section with the CLAS detector for 0.4 GeV^2 < Q^2 < 1.0 GeV^2 and 1.3 GeV < W < 1.825 GeV |
| Authors | Gleb Fedotov, Iuliia Skorodumina, Volker Burkert, Ralf Gothe, Ken Hicks, Viktor Mokeev |
| JLAB number | JLAB-PHY-18-2745 |
| LANL number | arXiv:1804.05136 |
| Other number | DOE/OR/23177-4479 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review C Volume 98 Issue 2 Page(s) 025203 Refereed | |
| Publication Abstract: | New results on the single-differential and fully-integrated cross sections for the process $\gamma_{v} p \rightarrow p' \pi^{+} \pi^{-}$ 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 $Q^2$ from 0.4 to 1.0~GeV$^2$. The cross sections were obtained in narrow $Q^{2}$ bins (0.05 GeV$^{2}$) 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 $Q^{2}$ evolution of the electrocouplings of most resonances with masses up to $\sim$1.8~GeV. |
| Experiment Numbers: | |
| Group: | Hall B |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevC.98.025203 |
| Accepted Manuscript: | 1804.05136.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |