Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range

Akhmetshin, R. R.; Aulchenko, V. M.; Banzarov, V. Sh.; Barkov, L. M.; Bashtovoy, N. S.; Bondar, A. E.; Bondarev, D. V.; Bragin, A. V.; Dhawan, S. K.; Eidelman, S. I.; Epifanov, D. A.; Fedotovich, G. V.; Gabyshev, N. I.; Gorbachev, D. A.; Grebenuk, A. A.; Grigoriev, D. N.; Hughes, V. W.; Ignatov, F. V.; Karpov, S. V.; Kazanin, V. F.; Khazin, B. I.; Koop, I. A.; Krokovny, P. P.; Kuzmin, A. S.; Logashenko, I. B.; Lukin, P. A.; Lysenko, A. P.; Mikhailov, K. Yu.; Milshtein, A. I.; Nesterenko, I. N.; Nikulin, M. A.; Okhapkin, V. S.; Otboev, A. V.; Perevedentsev, E. A.; Popov, A. S.; Redin, S. I.; Roberts, B. L.; Root, N. I.; Ruban, A. A.; Ryskulov, N. M.; Shamov, A. G.; Shatunov, Yu. M.; Shwartz, B. A.; Sibidanov, A. L.; Sidorov, V. A.; Skrinsky, A. N.; Smakhtin, V. P.; Snopkov, I. G.; Solodov, E. P.; Thompson, J. A.; Yudin, Yu. V.; Zaitsev, A. S.; Zverev, S. G.

Measurement of the e+e- -> pi+pi- cross section with the CMD-2 detector in the 370-520 MeV c.m. energy range

Authors

Description

The cross section of the process e+e- -> pi+pi- has been measured at the CMD-2 detector in the 370-520 MeV center-of-mass (c.m.) energy range. A systematic uncertainty of the measurement is 0.7 %. Using all CMD-2 data on the pion form factor, the pion electromagnetic radius was calculated. The cross section of muon pair production was also determined.
11 pages, 4 figures