Measurement of e+e−→π+π− cross-section with CMD-2 around ρ-meson

Authors :: S.V. Karpov
E. A. Kuraev
Igor Nesterenko
I. Logashenko
B.I. Khazin
A.N. Skrinsky
V.A. Sidorov
P.A. Lukin
L.M. Kurdadze
I.G. Snopkov
A.E. Bondar
K.Yu. Mikhailov
N.I. Root
J. P. Miller
V.M. Titov
E. P. Solodov
N.S. Bashtovoy
N. Gabyshev
A. I. Milstein
Yu. M. Shatunov
I. A. Koop
A.A. Ruban
J. A. Thompson
Andrej Arbuzov
E.V. Anashkin
L.M. Barkov
D.V. Bondarev
Yu. Y. Yudin
A.S. Kuzmin
N.M. Ryskulov
V.M. Aulchenko
A.I. Sukhanov
V.P. Smakhtin
B.A. Shwartz
F.V. Ignatov
Vassili Kazanin
P.Yu. Stepanov
S. K. Dhawan
A.S. Popov
D.A. Gorbachev
A.V. Bragin
V. W. Hughes
S.G. Zverev
D.V. Chernyak
A. A. Grebenuk
A.L. Sibidanov
P. Krokovny
T.A. Purlatz
G.V. Fedotovich
A.G. Shamov
R.R. Akhmetshin
A.A. Polunin
D.N. Grigoriev
A. P. Lysenko
V.Sh. Banzarov
V.S. Okhapkin
S.I. Eidelman
S.E. Baru
B. L. Roberts
Source :: Physics Letters B. (3-4):161-172
Publisher :: Elsevier Science B.V.
Abstract: The cross section of the process e+e- -> pi+pi- has been measured using about 114000 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. Implications for the hadronic contribution to the muon anomalous magnetic moment are discussed.<br />Comment: 17 pages, 4 figures, submitted to PLB

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