https://vital.lib.tsu.ru/vital/access/manager/Index ${session.getAttribute("locale")} 5 Measurement of spin density matrix elements in Λ(1520) photoproduction at 8.2–8.8 GeV https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001002551 Lambda(1520)K+, via its subsequent decay to K- p. The measurement was performed as part of the GlueX experimental program in Hall D at Jefferson Laboratory using a linearly polarized photon beam with E-gamma = 8.2 GeV-8.8 GeV. These are the first such measurements in this photon energy range. Results are presented in bins of momentum transfer squared, -(t - t(0)). We compare the results with a Reggeon exchange model and determine that natural exchange amplitudes are dominant in Lambda(1520) photoproduction.]]> Wed 14 Jun 2023 13:55:07 KRAT ]]> Search for photoproduction of axionlike particles at GlueX https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001002549 gamma gamma and a -> pi(+)pi(-)pi(0) decays, and a data sample corresponding to an integrated luminosity of 168 pb -1 collected with the GlueX detector. The search for a -> gamma gamma decays is performed in the mass range of 180 < m(a) < 480 MeV, while the search for a -> pi(+)pi(-)pi(0) decays explores the 600 < m(a) < 720 MeV region. No evidence for a signal is found, and 90% confidence-level exclusion limits are placed on the a-gluon coupling strength. These constraints are the most stringent to date over much of the mass ranges considered.]]> Wed 14 Jun 2023 00:57:56 KRAT ]]> Measurement of the beam asymmetry Σ for π0 and η photoproduction on the proton at Eγ = 9GeV https://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000591809 Mon 27 Nov 2017 10:11:58 KRAT ]]> Measurement of beam asymmetry for π−Δ++ photoproduction on the proton at Eγ=8.5 GeV https://vital.lib.tsu.ru/vital/access/manager/Repository/koha:000897295 Mon 04 Jul 2022 13:15:51 KRAT ]]>