English

First Physical Results from SND Detector at VEPP-2M

High Energy Physics - Experiment 2016-08-31 v2

Abstract

The paper describes experiments with the SND detector at VEPP-2M collider, carried out during the period from October 1995 until June 1997. The total integrated luminosity of 6.4 pb^{-1} was collected in the energy range 2E=0.4-1.4 GeV (MHAD97 experiment), corresponding to 4*10^5 mu^+ mu^- pairs produced. Preliminary results of the 1996 phi-meson experiment (FI96) are presented. The total number of phi-mesons produced is 4*10^6. New data on rare decays of phi and eta (550) mesons, in particular B(phi -> eta gamma) = (1.30+-0.06+-0.07)%, B(phi -> pi^0 pi^0 gamma) = (1.1+-0.2)*10^{-4}, (M_{pi^0 pi^0} > 800 MeV), B(phi -> f^0 gamma) = (4.7+-1.0)*10^{-4}, B(phi -> eta pi^0 gamma) = (1.3+-0.5)*10^{-4}, B(phi -> eta' gamma) < 1.7*10^{-4}, B(phi -> 2 pi^0 ) < 6*10^{-4} were obtained.

Keywords

Cite

@article{arxiv.hep-ex/9710017,
  title  = {First Physical Results from SND Detector at VEPP-2M},
  author = {M. N. Achasov and M. G. Bek and K. I. Beloborodov and A. V. Berdyugin and A. V. Bozhenok and A. D. Bukin and D. A. Bukin and S. V. Burdin and V. V. Danilov and T. V. Dimova and S. I. Dolinsky and V. P. Druzhinin and M. S. Dubrovin and I. A. Gaponenko and V. B. Golubev and V. N. Ivanchenko and P. I. Ivanov and I. A. Koop and A. A. Korol and M. S. Korostelev and S. V. Koshuba and A. P. Lysenko and A. A. Mamutkin and I. N. Nesterenko and E. V. Pakhtusova and E. A. Perevedentsev and A. A. Polunin and E. G. Pozdeev and V. I. Ptitsyn and E. E. Pyata and A. A. Salnikov and A. V. Savchkov and V. V. Shary and S. I. Serednyakov and Yu. M. Shatunov and V. A. Sidorov and Z. K. Silagadze and A. N. Skrinsky and Yu. V. Usov and A. A. Valishev and A. V. Varganov and A. V. Vasiljev and Yu. S. Velikzhanin},
  journal= {arXiv preprint arXiv:hep-ex/9710017},
  year   = {2016}
}

Comments

49 pages, LaTeX, 31 eps-figures

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