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Differential cross sections for gamma plus p -> K++ Y for Lambda and Sigma(0) hyperonsстатья
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., Mokeev V., CLAS C.
- Журнал: Physical Review C - Nuclear Physics
- Том: 73
- Номер: 3
- Год издания: 2006
- Издательство: American Physical Society
- Местоположение издательства: United States
- Первая страница: 035202
- DOI: 10.1103/PhysRevC.73.035202
- Аннотация: High-statistics cross sections for the reactions gamma+p -> K++Lambda and gamma+p -> K++Sigma(0) have been measured using CLAS at Jefferson Lab for center-of-mass energies W between 1.6 and 2.53 GeV, and for -0.85 < cos theta(K)(+c.m.)<+0.95. In the K(+)Lambda channel we confirm a resonance-like structure near W=1.9 GeV at backward kaon angles. The position and width of this structure change with angle, indicating that more than one resonance is likely playing a role. The K(+)Lambda channel at forward angles and all energies is well described by a t-channel scaling characteristic of Regge exchange, whereas the same scaling applied to the K(+)Sigma(0) channel is less successful. Several existing theoretical models are compared to the data, but none provide a good representation of the results.
- Добавил в систему: Ишханов Борис Саркисович