Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV

K. Schonning , Chr. Bargholtz , M. Bashkanov , M. Berlowski , D. Bogoslawsky , H. Calen , H. Clement , L. Demirors

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C. Ekstrom K. Fransson L. Geren L. Gustafsson B. Hoistad G. Ivanov M. Jacewicz E. Jiganov T. Johansson S. Keleta O. Khakimova I. Koch F. Kren S. Kullander A. Kupsc A. Kuzmin K. Lindberg P. Marciniewski B. Morosov W. Oelert C. Pauly H. Pettersson Y. Petukhov A. Povtorejko R.J.M.Y. Ruber W. Scobel R. Shafigullin B. Shwartz T. Skorodko V. Sopov J. Stepaniak P.-E. Tegner P. Thorngren Engblom V. Tikhomirov A. Turowiecki G.J. Wagner C. Wilkin M. Wolke J. Zabierowski I. Zartova J. Zlomanczuk

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classification ⚛️ nucl-ex

keywords omegamesonsmesonpd--polarisationproductionreactionapplicability

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The tensor polarisation of omega mesons produced in the pd-->3He+omega reaction has been studied at two energies near threshold. The 3He nuclei were detected in coincidence with the pi0pi+pi- or pi0gamma decay products of the omega. In contrast to the case of phi meson production, the omega mesons are found to be unpolarised. This brings into question the applicability of the Okubo-Zweig-Iizuka rule when comparing the production of vector mesons in low energy hadronic reactions.

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Polarisation of the omega meson in the pd-->3He+omega reaction at 1360 and 1450 MeV

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