The e+e-→pp¯ 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 469fb-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/ψ→pp¯ and ψ(2S)→pp¯ have also been measured.
Measurement of the e^{+}e^{-}→pp[over ¯] cross section in the energy range from 3.0 to 6.5 GeV
LANCERI, LIVIO;VITALE, LORENZO;
2013-01-01
Abstract
The e+e-→pp¯ 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 469fb-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/ψ→pp¯ and ψ(2S)→pp¯ have also been measured.File in questo prodotto:
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