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

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dc.contributor.authorAdhikari, S.
dc.contributor.authorAli, A.
dc.contributor.authorAmaryan, M.
dc.contributor.authorAustregesilo, A.
dc.contributor.authorBerdnikov, V. V.
dc.contributor.authorRomanov, D.
dc.contributor.authorSomov, S.
dc.contributor.authorСомов, Сергей Всеволодович
dc.date.accessioned2024-11-26T15:17:11Z
dc.date.available2024-11-26T15:17:11Z
dc.date.issued2020
dc.description.abstract© 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.
dc.identifier.citationMeasurement 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
dc.identifier.doi10.1103/PhysRevC.101.065206
dc.identifier.urihttps://www.doi.org/10.1103/PhysRevC.101.065206
dc.identifier.urihttps://www.scopus.com/record/display.uri?eid=2-s2.0-85088399838&origin=resultslist
dc.identifier.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000548346200005
dc.identifier.urihttps://openrepository.mephi.ru/handle/123456789/22085
dc.relation.ispartofPhysical Review C
dc.titleMeasurement of the photon beam asymmetry in γ - p→K+ ς0 at Eγ=8.5 GeV
dc.typeArticle
dspace.entity.typePublication
oaire.citation.issue6
oaire.citation.volume101
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