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ISSN - 01466410, Progress in Particle and Nuclear Physics, 2012, vol. 67, p. 594-598

First results of spherical neutral detector (SND) experiments at VEPP-2000

Achasov M. N., Barnyakov A. Yu, Beloborodov K. I., Berdyugin A. V., Berkaev D. E., Bogdanchikov A. G., Botov A. A., Bukin D. A., Vasiljev A. V., Golubev V. B., Grevtsov K. I., Dimova T. V., Druzhinin V. P., Kardapoltsev L. V., Kovrizhin D. P., Koop I. A., Korol A. A., Koshuba S. V., Kravchenko E. A., Martin K. A., Obrazovsky A. E., Otboev A. V., Pakhtusova E. V., Romanov A. L., Serednyakov S. I., Silagadze Z. K., Skovpen K. Yu, Skrinsky A. N., Surin I. K., Tikhonov Yu A., Kharlamov A. G., Shatunov P. Yu, Shatunov Yu M., Shtol D. A., Shwartz D. B., Zharinov Yu M.

Preliminary results of the first experiments at the new VEPP-2000 e+e- collider are presented. The experiments have been carried out in the center of mass energy range 12 GeV with instant luminosity 10 3010 31cm -2s -1 and total integrated luminosity of about 10pb -1. The main e+e- annihilation cross sections, π+π- π0π0, π+π- π0, π0π0γ,and π+π-η, have been measured. The cross section of nucleonantinucleon production is also presented. © 2012 Elsevier B.V. All rights reserved.