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Experimental study of the decay PHI(1020)--->ETA+GAMMA in multi-photon final state

M. N. Achasov·S. E. Baru·A. V. Berdyugin·A. V. Bozhenok·A. D. Bukin·D. A. Bukin·S. V. Burdin·T. V. Dimova·S. I. Dolinsky·V. P. Druzhinin·M. S. Dubrovin·I. A. Gaponenko·V. B. Golubev·V. N. Ivanchenko·A. A. Korol·S. V. Koshuba·I. N. Nesterenko·E. V. Pakhtusova·A. A. Polunin·E. E. Pyata·A. A. Salnikov·S. I. Serednyakov·V. V. Shary·Yu. M. Shatunov·V. A. Sidorov·Z. K. Silagadze·Yu. S. Velikzhanin
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Abstract

In the SND experiment at VEPP-2M e^+e^- collider the phi(1020) ---> eta+gamma ---> 3pi^0+gamma decay was studied. The branching ratio B(phi--->eta+gamma) = (1.246 +- 0.025 +- 0.057)% was measured.

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M. N. Achasov, S. E. Baru, A. V. Berdyugin, A. V. Bozhenok, A. D. Bukin, D. A. Bukin, S. V. Burdin, T. V. Dimova, S. I. Dolinsky, V. P. Druzhinin, M. S. Dubrovin, I. A. Gaponenko, V. B. Golubev, V. N. Ivanchenko, A. A. Korol, S. V. Koshuba, I. N. Nesterenko, E. V. Pakhtusova, A. A. Polunin, E. E. Pyata, A. A. Salnikov, S. I. Serednyakov, V. V. Shary, Yu. M. Shatunov, V. A. Sidorov, Z. K. Silagadze, Yu. S. Velikzhanin. 1998-09-02. Experimental study of the decay PHI(1020)--->ETA+GAMMA in multi-photon final state. https://doi.org/10.1134/1.567909

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