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Electroproduction of p pi(+)pi(-) off protons at 0.2 < Q(2) < 0.6 GeV2 and 1.3 < W < 1.57 GeV with the CLAS detectorстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Авторы: Fedotov G., Golovatch E., Ishkhanov B.S., Isupov E.L., Mokeev V., CLAS C.
- Журнал: Physical Review C - Nuclear Physics
- Том: 79
- Номер: 1
- Год издания: 2009
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 015204
- DOI: 10.1103/PhysRevC.79.015204
- Аннотация: This paper reports on the most comprehensive data set obtained on differential and fully integrated cross sections for the process ep. e -> p pi(+)pi(-). The data were collected with the CLAS detector at Jefferson Laboratory. Measurements were carried out in the as yet unexplored kinematic region of photon virtuality 0.2 < Q(2) < 0.6 GeV2 and invariant mass of the final hadron system W from 1.3 to 1.57 GeV. For the first time, nine independent one-fold differential cross sections were determined in each bin of W and Q(2) covered by the measurements. A phenomenological analysis of the data allowed us to establish the most significant mechanisms contributing to the reaction. The nonresonant mechanisms account for a major part of cross sections. However, we find sensitivity to s-channel excitations of low-mass nucleon resonances, especially to the N(1440)P-11 and N(1520)D-13 states in kinematic dependencies of the one-fold differential cross sections.
- Добавил в систему: Ишханов Борис Саркисович