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arXiv · 1308.1795

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

The BABAR Collaboration·J. P. Lees·others
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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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The BABAR Collaboration, J. P. Lees, others. 2013-08-10. Measurement of the e+e- --> p anti-p cross section in the energy range from 3.0 to 6.5 GeV. https://doi.org/10.1103/physrevd.88.072009

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