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26 April 2024

» arxiv » hep-ex/0101043

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Search for the radiative decay $eta o pi^0 gamma gamma$ in the SND experiment at VEPP-2M
M.N. Achasov ; K.I. Beloborodov ; A.V. Berdyugin ; A.V. Bozhenok ; A.G. Bogdanchikov ; D.A. Bukin ; S.V. Burdin ; T.V. Dimova ; A.A. Drozdetsky ; V.P. Druzhinin ; D.I. Ganyushin ; V.B. Golubev ; V.N. Ivanchenko ; I.A. Koop ; A.A. Korol ; S.V. Koshuba ; A.V. Otboev ; E.V. Pakhtusova ; A.A. Salnikov ; V.V. Shary ; S.I. Serednyakov ; Yu.M. Shatunov ; V.A. Sidorov ; Z.K. Silagadze ; A.G. Skripkin ; A.A. Valishev ; A.V. Vasiljev ; Yu.S. Velikzhanin ;
Date:	25 Dec 2000
Journal:	Nucl.Phys. B600 (2001) 3-20
Subject:	hep-ex hep-ph
Abstract:	The $eta o pi^0 gamma gamma$ decay was investigated by the SND detector at VEPP-2M $e^+e^-$ collider in the reaction $e^+e^- ophi o etagamma$. Here we present the results and some details of this study. We report an upper limit (90% c.l.) $Br(eta o pi^0 gamma gamma)<8.4 imes 10^{-4}$ 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.
Source:	arXiv, hep-ex/0101043
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