High-statistics measurement of the pion form factor in the ρ-meson energy range with the CMD-2 detector
/ Authors
R. Akhmetshin, V. Aulchenko, V. Banzarov, L. Barkov, N. Bashtovoy, A. Bondar, D. V. Bondarev, A. Bragin, S. Dhawan, S. Eidelman
and 44 more authors
D. Epifanov, G. Fedotovich, N. Gabyshev, D. Gorbachev, A. Grebenuk, D. Grigoriev, V. Hughes, F. Ignatov, S. Karpov, V. Kazanin, B. Khazin, I. Koop, P. Krokovny, A. Kuzmin, I. Logashenko, P. Lukin, A. Lysenko, K. Mikhaĭlov, J. Miller, A. Milshtein, I. Nesterenko, M. Nikulin, V. Okhapkin, A. Otboev, E. Perevedentsev, A. Popov, S. Redin, B. Roberts, N. Root, A. Ruban, N. Ryskulov, A. Shamov, Y. Shatunov, B. Shwartz, A. Sibidanov, V. Sidorov, A. Skrinsky, V. Smakhtin, I. Snopkov, E. Solodov, J. Thompson, Y. Yudin, A. Zaitsev, S. Zverev
/ Abstract
Abstract We present a measurement of the pion form factor based on e + e − annihilation data from the CMD-2 detector in the energy range 0.6 s 1.0 GeV with a systematic uncertainty of 0.8%. A data sample is five times larger than that used in our previous measurement.
Journal: Physics Letters B