Graugés Pous, EugeniBABAR Collaboration2019-04-082019-04-082013-10-281550-7998https://hdl.handle.net/2445/131772The e + e − → p ¯ 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 / ψ → p ¯ p and ψ ( 2 S ) → p ¯ p have also been measured.12 p.application/pdfeng(c) American Physical Society, 2013Física de partículesExperimentsDiagrames de FeynmanCol·lisions (Física nuclear)Particle physicsExperimentsFeynman diagramsCollisions (Nuclear physics)info:eu-repo/semantics/article6316452019-04-08info:eu-repo/semantics/openAccess