Recent results from SND detector at VEPP-2M

M. N. Achasov; V. M. Aulchenko; K. I. Beloborodov; A. V. Berdyugin; A. V. Bozhenok; A. G. Bogdanchikov; A. D. Bukin; D. A. Bukin; S. V. Burdin; T. V. Dimova; A. A. Drozdetsky; V. P. Druzhinin; V. B. Golubev; V. N. Ivanchenko; P. M. Ivanov; A. A. Korol; S. V. Koshuba; A. A. Mamutkin; E. V. Pakhtusova; E. A. Perevedentsev; E. E. Pyata; A. A. Salnikov; S. I. Serednyakov; V. V. Shary; A. G. Skripkin; Yu. M. Shatunov; V. A. Sidorov; Z. K. Silagadze; A. N. Skrinsky; A. V. Vasiljev

arXiv · hep-ex/0010077

Recent results from SND detector at VEPP-2M

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Abstract

The current status of experiments with SND detector at VEPP-2M $e^+e^-$ collider in the energy range $2E_0=0.4-1.4$ GeV is given. The new results of analysis of $ϕ$ decay into $π^0π^0γ$, $ηπ^0γ$ are based on the full SND statistics corresponding 20 million of $ϕ$ decay. New measurement of $ω\toπ^0π^0γ$ decay and a first observation of $ρ\toπ^0π^0γ$ are presented. The accuracy of many other rare decays of light vector mesons was improved. In the energy range $2E_0=1.0\div1.4$ GeV the cross sections of the processes $e^+e^-\toωπ^0$ and $e^+e^-\toπ^+π^-π^0$ were measured. The results of the fitting of data are discussed.

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M. N. Achasov, V. M. Aulchenko, K. I. Beloborodov, A. V. Berdyugin, A. V. Bozhenok, A. G. Bogdanchikov, A. D. Bukin, D. A. Bukin, S. V. Burdin, T. V. Dimova, A. A. Drozdetsky, V. P. Druzhinin, V. B. Golubev, V. N. Ivanchenko, P. M. Ivanov, A. A. Korol, S. V. Koshuba, A. A. Mamutkin, E. V. Pakhtusova, E. A. Perevedentsev, E. E. Pyata, A. A. Salnikov, S. I. Serednyakov, V. V. Shary, A. G. Skripkin, Yu. M. Shatunov, V. A. Sidorov, Z. K. Silagadze, A. N. Skrinsky, A. V. Vasiljev. 2000-11-04. Recent results from SND detector at VEPP-2M. https://arxiv.org/abs/hep-ex/0010077

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