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arxiv: hep-ex/9901020 · v1 · submitted 1999-01-14 · ✦ hep-ex

Observation of the decay PHI(1020)--->OMEGA+PI0

M.N.Achasov , S.E.Baru , A.V.Berdyugin , A.V.Bozhenok , D.A.Bukin , S.V.Burdin , T.V.Dimova , S.I.Dolinsky
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V.P.Druzhinin M.S.Dubrovin I.A.Gaponenko V.B.Golubev V.N.Ivanchenko A.A.Korol M.S.Korostelev S.V.Koshuba E.V.Pakhtusova A.A.Polunin E.E.Pyata A.A.Salnikov V.V.Shary S.I.Serednyakov Yu.M.Shatunov V.A.Sidorov A.N.Skrinsky Z.K.Silagadze Yu.S.Velikzhanin
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classification ✦ hep-ex
keywords omegadecayobservedamplitudebeenbranchingcolliderconsistent
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The reaction e^+e^- ---> OMEGA+PI0 ---> PI+PI- 2PI0 has been studied with SND detector at VEPP-2M e^+e^- collider in the vicinity of the PHI(1020) meson resonance. The observed interference pattern in the energy dependence of the cross section is consistent with existence of the decay PHI ---> OMEGA+PI0 with a branching ratio of B(PHI ---> OMEGA+PI0)=(4.8+1.9-1.7+-0.8)x10^{-5}. The real and imaginary parts of the decay amplitude were measured. The PHI ---> OMEGA+PI0 decay was observed for the first time.

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