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Evidence of phi --> pi0 pi0 gamma and phi --> pi0 eta gamma decays in SND experiment at VEPP-2M

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arxiv hep-ex/9711023 v1 pith:W4VD62D2 submitted 1997-11-27 hep-ex

Evidence of phi --> pi0 pi0 gamma and phi --> pi0 eta gamma decays in SND experiment at VEPP-2M

M.N.Achasov , A.V.Berdyugin , A.V.Bozhenok , A.D.Bukin , D.A.Bukin , S.V.Burdin , T.V.Dimova , V.P.Druzhinin
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M.S.Dubrovin I.A.Gaponenko V.B.Golubev V.N.Ivanchenko I.A.Koop A.A.Korol S.V.Koshuba E.V.Pakhtusova A.A.Salnikov S.I.Serednyakov V.V.Shary Yu.M.Shatunov V.A.Sidorov Z.K.Silagadze A.N.Skrinsky Yu.V.Usov
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classification hep-ex
keywords gammadecaysexperimentvepp-2mbranchingcolliderevidenceinvariant
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Preliminary results on the study of e+e- --> phi(1020) --> pi0 pi0 gamma, eta pi0 gamma processes from SND experiment at VEPP-2M collider in Novosibirsk are presented. Branching ratios of rare radiative phi --> pi0 pi0 gamma and phi --> pi0 eta gamma decays are measured: B(phi --> pi0 pi0 gamma ) = (1.1 +- 0.2) * 10^-4 (invariant mass (pi0 pi0) < 800 MeV), B(phi --> eta pi0 gamma ) = (1.3 +- 0.5) * 10^-4.

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