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Recent results from SND detector at VEPP-2M

High Energy Physics - Experiment 2007-05-23 v2
Authors: 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
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Abstract

The current status of experiments with SND detector at VEPP-2M e+e−e^+e^- collider in the energy range 2E0=0.4−1.42E_0=0.4-1.4 GeV is given. The new results of analysis of ϕ\phi decay into π0π0γ\pi^0\pi^0\gamma, ηπ0γ\eta\pi^0\gamma are based on the full SND statistics corresponding 20 million of ϕ\phi decay. New measurement of ω→π0π0γ\omega\to\pi^0\pi^0\gamma decay and a first observation of ρ→π0π0γ\rho\to\pi^0\pi^0\gamma are presented. The accuracy of many other rare decays of light vector mesons was improved. In the energy range 2E0=1.0÷1.42E_0=1.0\div1.4 GeV the cross sections of the processes e+e−→ωπ0e^+e^-\to\omega\pi^0 and e+e−→π+π−π0e^+e^-\to\pi^+\pi^-\pi^0 were measured. The results of the fitting of data are discussed.

Keywords

electron-positron annihilation cross sections hadron decays kaon decays

Cite

@article{arxiv.hep-ex/0010077,
  title  = {Recent results from SND detector at VEPP-2M},
  author = {M. N. Achasov and V. M. Aulchenko and K. I. Beloborodov and A. V. Berdyugin and A. V. Bozhenok and A. G. Bogdanchikov and A. D. Bukin and D. A. Bukin and S. V. Burdin and T. V. Dimova and A. A. Drozdetsky and V. P. Druzhinin and V. B. Golubev and V. N. Ivanchenko and P. M. Ivanov and A. A. Korol and S. V. Koshuba and A. A. Mamutkin and E. V. Pakhtusova and E. A. Perevedentsev and E. E. Pyata and A. A. Salnikov and S. I. Serednyakov and V. V. Shary and A. G. Skripkin and Yu. M. Shatunov and V. A. Sidorov and Z. K. Silagadze and A. N. Skrinsky and A. V. Vasiljev},
  journal= {arXiv preprint arXiv:hep-ex/0010077},
  year   = {2007}
}

Comments

13 pages, Talk given at the XXIII International Workshop on the Fundamental Problems of High Energy Physics and Field Theory, Protvino, Russia, June 21-23,2000

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