2,559 research outputs found

    Measurement of hadron cross sections with the SND detector

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    New results on exclusive hadron production in e+ee^+e^- annihilation obtained in experiments with the SND detector at the VEPP-2M and VEPP-2000 e+ee^+e^- colliders are presented.Comment: 4 pages, 4 figures, presented at the 14th International Workshop on Meson Production, Properties and Interaction (MESON 2016), Cracow, Poland, 2nd - 7th June 201

    Review of experimental results from SND detector

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    The review of experimental results obtained with SND detector at VEPP-2M e+ee^+e^- collider in the energy region s=0.36\sqrt[]{s}=0.36 -- 1.38 GeV is given. The presented results include the following items: studies of the light vector mesons radiative decays, OZI-rule and G-parity suppressed ϕ\phi-meson rare decays, ϕ\phi-meson parameters measurements, studies of e+eπ+ππ0e^+e^-\to\pi^+\pi^-\pi^0 process dynamics, η\eta and KSK_S mesons rare decays, η\eta and ϕ\phi mesons conversion decays, and study of the e+ee^+e^- annihilation into hadrons.Comment: 12 pages and 6 figures. Talk given at the IX International Conference on Hadron Spectroskopy, Protvino, Russia, August 25 - September 1, 200

    Study of the e+eηγe^+e^-\to\eta\gamma process with SND detector at the VEPP-2M e+ee^+e^- collider

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    In experiment with the SND detector at VEPP-2M e+ee^+e^- collider the e+eηγe^+e^-\to\eta\gamma cross section was measured in the energy range EE=0.60--1.38 GeV with the integrated luminosity of 27.8 pb1^{-1}. The measured cross section is well described by the vector meson dominance model with contributions from the ρ(770)\rho(770), ω(783)\omega(783), ϕ(1020)\phi(1020), ρ(1465)\rho^{\prime}(1465) resonances and agrees with results of previous measurements. The decay probabilities \BR(\phi\to\eta\gamma), \BR(\omega\to\eta\gamma) and \BR(\rho\to\eta\gamma) were measured with the accuracies better than or comparable to the world averages.Comment: 13 pages, 6 figures, 5 table