Search for the radiative decay \(\eta \to \pi^0 \gamma \gamma\) in the SND experiment at VEPP-2M

The \(\eta \to \pi^0 \gamma \gamma\) decay was investigated by the SND detector at VEPP-2M \(e^+e^-\) collider in the reaction \(e^+e^-\to\phi\to \eta\gamma\). Here we present the results and some details of this study. We report an upper limit (90% c.l.) \(Br(\eta \to \pi^0 \gamma \gamma)

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Veröffentlicht in:arXiv.org 2001-01
Hauptverfasser: Achasov, M N, Beloborodov, K I, Berdyugin, A V, Bozhenok, A V, Bogdanchikov, A G, Bukin, D A, Burdin, S V, Dimova, T V, Drozdetsky, A A, Druzhinin, V P, Ganyushin, D I, Golubev, V B, Ivanchenko, V N, Koop, I A, Korol, A A, Koshuba, S V, Otboev, A V, Pakhtusova, E V, Salnikov, A A, Shary, V V, Serednyakov, S I, Shatunov, Yu M, Sidorov, V A, Silagadze, Z K, Skripkin, A G, Valishev, A A, Vasiljev, A V, Velikzhanin, Yu S
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Sprache:eng
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Zusammenfassung:The \(\eta \to \pi^0 \gamma \gamma\) decay was investigated by the SND detector at VEPP-2M \(e^+e^-\) collider in the reaction \(e^+e^-\to\phi\to \eta\gamma\). Here we present the results and some details of this study. We report an upper limit (90% c.l.) \(Br(\eta \to \pi^0 \gamma \gamma)
ISSN:2331-8422
DOI:10.48550/arxiv.0101043