Publication: Beam asymmetry Sigma for the photoproduction of eta and eta mesons at E-gamma=8.8 GeV
Дата
2019
Авторы
Adhikari, S.
Ali, A.
Amaryan, M.
Austregesilo, A.
Berdnikov, V. V.
Romanov, D.
Somov, S.
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Аннотация
We report on the measurement of the beam asymmetry Sigma for the reactions (gamma) over right arrowp -> p eta and (gamma) over right arrowp -> p eta' from the GlueX experiment using an 8.2-8.8-GeV linearly polarized tagged photon beam incident on a liquid hydrogen target in Hall D at Jefferson Laboratory. These measurements are made as a function of momentum transfer -t with significantly higher statistical precision than our earlier. measurements and are the first measurements of eta' in this energy range. We compare the results to theoretical predictions based on t-channel quasiparticle exchange. We also compare the ratio of Sigma(eta) to Sigma(eta)' to these models as this ratio is predicted to be sensitive to the amount of s (s) over bar exchange in the production. We find that photoproduction of both eta and eta' is dominated by natural parity exchange with little dependence on -t.
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Цитирование
Beam asymmetry Sigma for the photoproduction of eta and eta mesons at E-gamma=8.8 GeV / Adhikari, S [et al.] // Physical Review C. - 2019. - 100. - № 5. - 10.1103/PhysRevC.100.052201
URI
https://www.doi.org/10.1103/PhysRevC.100.052201
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https://openrepository.mephi.ru/handle/123456789/18966
https://www.scopus.com/record/display.uri?eid=2-s2.0-85076607014&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000498867100002
https://openrepository.mephi.ru/handle/123456789/18966