Publication:
Measurement of the photon beam asymmetry in γ - p→K+ ς0 at Eγ=8.5 GeV

Дата
2020
Авторы
Adhikari, S.
Ali, A.
Amaryan, M.
Austregesilo, A.
Berdnikov, V. V.
Romanov, D.
Somov, S.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Логотип проекта
Научная группа
GlueX Collaboration
Организационные подразделения
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Организационная единица
Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
Выпуск журнала
Аннотация
© 2020 American Physical Society. We report measurements of the photon beam asymmetry ς for the reaction γ - p→K+ς0(1193) using the GlueX spectrometer in Hall D at Jefferson Lab. Data were collected by using a linearly polarized photon beam in the energy range of 8.2-8.8 GeV incident on a liquid hydrogen target. The beam asymmetry ς was measured as a function of the Mandelstam variable t, and a single value of ς was extracted for events produced in the u channel. These are the first exclusive measurements of the photon beam asymmetry ς for the reaction in this energy range. For the t channel, the measured beam asymmetry is close to unity over the t range studied, -t=(0.1-1.4)(GeV/c)2, with an average value of ς=1.00±0.05. This agrees with theoretical models that describe the reaction via the natural-parity exchange of the K∗(892) Regge trajectory. A value of ς=0.41±0.09 is obtained for the u channel integrated up to -u=2.0 (GeV/c)2.
Описание
Ключевые слова
Цитирование
Measurement of the photon beam asymmetry in γ - p→K+ ς0 at Eγ=8.5 GeV / Adhikari, S. [et al.] // Physical Review C. - 2020. - 101. - № 6. - 10.1103/PhysRevC.101.065206
URI
https://www.doi.org/10.1103/PhysRevC.101.065206
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85088399838&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000548346200005
 https://openrepository.mephi.ru/handle/123456789/22085
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