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Title:	STUDY OF E+E- ANNIHILATION INTO HADRONS AT VEPP-2M
DOI No:	10.1142/9789812777157_0028
Source:	PHOTON 2001 (pp 147-151)
Author(s):	R. R. AKHMETSHIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia E. V. ANASHKIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia V. SH. BANZAROV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia L. M. BARKOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia N. S. BASHTOVOY Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. E. BONDAR Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia D. V. BONDAREV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. V. BRAGIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia D. V. CHERNYAK Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia S. DHAWAN Yale University, New Haven, CT 06511, USA S. I. EIDELMAN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia G. V. FEDOTOVICH Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia N. I. GABYSHEV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia D. A. GORBACHEV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia A. A. GREBENUK Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia D. N. GRIGORIEV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia V. W. HUGHES Yale University, New Haven, CT 06511, USA F. V. IGNATOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia S. V. KARPOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia V. F. KAZANINE Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia B. I. KHAZIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia I. A. KOOP Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia P. P. KROKOVNY Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia L. M. KURDADZE Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. S. KUZMIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia I. B. LOGASHENKO Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Boston University, Boston, MA 02215, USA P. A. LUKIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. P. LYSENKO Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia K. YU. MIKHAILOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia J. P. MILLER Boston University, Boston, MA 02215, USA A. I. MILSTEIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia I. N. NESTERENKO Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia V. S. OKHAPKIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. S. POPOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia T. A. PURLATZ Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia B. L. ROBERTS Boston University, Boston, MA 02215, USA N. I. ROOT Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. A. RUBAN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia N. M. RYSKULOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia YU. M. SHATUNOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia B. A. SHWARTZ Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia A. L. SIBIDANOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia V. A. SIDOROV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. N. SKRINSKY Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia V. P. SMAKHTIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia I. G. SNOPKOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia E. P. SOLODOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia Novosibirsk State University, Novosibirsk, 630090, Russia P. YU. STEPANOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia A. I. SUKHANOV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia J. A. THOMPSON University of Pittsburgh, Pittsburgh, PA 15260, USA YU. Y. YUDIN Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia S. G. ZVEREV Budker Institute of Nuclear Physics, Novosibirsk, 630090, Russia
Abstract:	Precise knowledge of R(s) = σ(e+e- → hadrons)/σ(e+e- → μ+μ-) is important in a variety of problems in particle physics. While at high energies R(s) can be calculated within the framework of QCD, at low energies it has to be measured in experiment. In 1992-2000 the data with integrated luminosity of 70 pb-1 were collected in the energy range with the CMD-2 and SND detectors at the VEPP-2M collider in Novosibirsk. The status of the R(s) measurements by these groups will be presented.
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