Search for the radiative decay $η\to π^0 γγ$ in the SND experiment at VEPP-2M

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dc.creatorAchasov, M. N.
dc.creatorBeloborodov, K. I.
dc.creatorBerdyugin, A. V.
dc.creatorBozhenok, A. V.
dc.creatorBogdanchikov, A. G.
dc.creatorBukin, D. A.
dc.creatorBurdin, S. V.
dc.creatorDimova, T. V.
dc.creatorDrozdetsky, A. A.
dc.creatorDruzhinin, V. P.
dc.creatorGanyushin, D. I.
dc.creatorGolubev, V. B.
dc.creatorIvanchenko, V. N.
dc.creatorKoop, I. A.
dc.creatorKorol, A. A.
dc.creatorKoshuba, S. V.
dc.creatorOtboev, A. V.
dc.creatorPakhtusova, E. V.
dc.creatorSalnikov, A. A.
dc.creatorShary, V. V.
dc.creatorSerednyakov, S. I.
dc.creatorShatunov, Yu. M.
dc.creatorSidorov, V. A.
dc.creatorSilagadze, Z. K.
dc.creatorSkripkin, A. G.
dc.creatorValishev, A. A.
dc.creatorVasiljev, A. V.
dc.creatorVelikzhanin, Yu. S.
dc.date2001-01-25
dc.date.accessioned2026-07-07T11:30:13Z
dc.date.available2026-07-07T11:30:13Z
dc.descriptionThe $η\to π^0 γγ$ decay was investigated by the SND detector at VEPP-2M $e^+e^-$ collider in the reaction $e^+e^-\toϕ\to ηγ$. Here we present the results and some details of this study. We report an upper limit (90% c.l.) $Br(η\to π^0 γγ)<8.4\times 10^{-4}$ as our final result. Our upper limit does not contradict the earlier measurement by GAMS spectrometer. To facilitate future studies a rather detailed review of the problem is also given.
dc.description24 pages, 6 figures, LaTex. To be published in Nucl. Phys. B
dc.identifierhttps://arxiv.org/abs/hep-ex/0101043
dc.identifierhttp://arxiv.org/abs/hep-ex/0101043
dc.identifierNucl.Phys.B600:3-20,2001
dc.identifierdoi:10.1016/S0550-3213(01)00040-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196949
dc.subjectHigh Energy Physics - Experiment
dc.subjectHigh Energy Physics - Phenomenology
dc.titleSearch for the radiative decay $η\to π^0 γγ$ in the SND experiment at VEPP-2M
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