MEASUREMENT OF THE ω MESON POLARIZATION IN THE pd → 3He ω REACTION AT 1360 AND 1450 MeV
2009
The tensor polarization of ω mesons produced in the pd → 3Heω reaction has been measured at two energies near threshold. The 3He nuclei were detected in coincidence with the π0π+π- or π0γ decay products of the ω. The ω mesons are found to be unpolarised, which is in complete contrast to the case of ϕ-meson production from the corresponding reaction pd → 3Heϕ. 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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