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Measurement of the e+e- --> p anti-p cross section in the energy range from 3.0 to 6.5 GeV

Abstract : The e+ e- --> p anti-p cross section and the proton magnetic form factor have been measured in the center-of-mass energy range from 3.0 to 6.5 GeV using the initial-state-radiation technique with an undetected photon. This is the first measurement of the form factor at energies higher than 4.5 GeV. The analysis is based on 469 fb-1 of integrated luminosity collected with the BABAR detector at the PEP-II collider at e+e- center-of-mass energies near 10.6 GeV. The branching fractions for the decays J/psi --> p anti-p and psi(2S) --> p anti-p have also been measured.
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http://hal.in2p3.fr/in2p3-00850853
Contributor : Sabine Starita <>
Submitted on : Friday, August 9, 2013 - 11:16:57 AM
Last modification on : Tuesday, December 8, 2020 - 1:46:07 PM

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J. P. Lees, V. Poireau, V. Tisserand, N. Arnaud, M. Davier, et al.. Measurement of the e+e- --> p anti-p cross section in the energy range from 3.0 to 6.5 GeV. Physical Review D, American Physical Society, 2013, 88, pp.072009. ⟨10.1103/PhysRevD.88.072009⟩. ⟨in2p3-00850853⟩

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