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ISSN - 10637788, EISSN - 1562692X, Physics of Atomic Nuclei, 2015, vol. 78, 4, p. 497-508

New results of measurement of cross sections for electron-positron annihilation to hadrons with the SND detector at VEPP-2000

© 2015, Pleiades Publishing, Ltd. A survey of preliminary results of experiments with the SND detector at the VEPP-2000 e<sup>+</sup>e<sup>−</sup> collider in the energy range of $\sqrt s$ = 1000–2000 MeV MeV is presented. The cross sections for the processes e<sup>+</sup>e<sup>−</sup> → π<sup>0</sup>π<sup>0</sup>γ, e<sup>+</sup>e<sup>−</sup> → π<sup>+</sup>π<sup>−</sup>π<sup>0</sup>π<sup>0</sup>, e<sup>+</sup>e<sup>−</sup> → π<sup>+</sup>π<sup>−</sup>π<sup>0</sup>, e<sup>+</sup>e<sup>−</sup> → π<sup>+</sup>π<sup>−</sup>η, and e<sup>+</sup>e<sup>−</sup> → $p\bar p$ were measured. The measured cross sections agree with the results of earlier measurements but have a higher precision. The cross section for the process e<sup>+</sup>e<sup>−</sup> → ηγ in the energy range extending from 1.4 to 2 GeV was measured for the first time. The ratio G<inf>E</inf>/G<inf>M</inf> for the neutron was measured for the first time in the timelike region.