Year: 2002
Type: article
Abstract: The cross-section of the process e+e−→π+π− has been measured using about 11 4000 events collected by the CMD-2 detector at the VEPP-2M e+e− collider in the center-of-mass energy range from 0.61 to 0.96 GeV. Results of the pion form factor determination with a 0.6% systematic uncertainty are presented. The following values of the ρ- and ω-meson parameters were found: Mρ=(776.09±0.81) MeV, Γρ=(144.46±1.55) MeV, Γ(ρ→e+e−)=(6.86±0.12) keV, Br(ω→π+π−)=(1.33±0.25)%. Implications for the hadronic contribution to the muon anomalous magnetic moment are discussed.
Source: Physics Letters B
Authors: R.R. Akhmetshin, E.V. Anashkin, A.B. Arbuzov, V.M. Aulchenko, V.Sh. Banzarov, L.M. Barkov, S.E. Baru, N.S. Bashtovoy, A.E. Bondar, D.V. Bondarev, A.V. Bragin, D.V. Chernyak, S. Dhawan, S.I. Eidelman, G.V. Fedotovich, N.I. Gabyshev, D.A. Gorbachev, A.A. Grebenuk, D.N. Grigoriev, V.W. Hughes, F.V. Ignatov, S.V. Karpov, V.F. Kazanin, B.I. Khazin, I.A. Koop, P.P. Krokovny, E.A. Kuraev, L.M. Kurdadze, A.S. Kuzmin, I.B. Logashenko, P.A. Lukin, A.P. Lysenko, K.Yu. Mikhailov, J.P. Miller, A.I. Milstein, I.N. Nesterenko, V.S. Okhapkin, A.A. Polunin, A.S. Popov, T.A. Purlatz, B.L. Roberts, N.I. Root, A.A. Ruban, N.M. Ryskulov, A.G. Shamov, Yu.M. Shatunov, B.A. Shwartz, A.L. Sibidanov, V.A. Sidorov, A.N. Skrinsky, V.P. Smakhtin, I.G. Snopkov, E.P. Solodov, P.Yu. Stepanov, A.I. Sukhanov, J.A. Thompson, V.M. Titov, Yu.Y. Yudin, S.G. Zverev
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid:
OpenAlex ID: W1506500664