The e+e-→pp̄ 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→pp̄ and ψ(2S)→pp̄ have also been measured.
Lees, J., Poireau, V., Tisserand, V., Grauges, E., Palano, A., Eigen, G., et al. (2013). Measurement of the e+e-→pp̄ cross section in the energy range from 3.0 to 6.5 GeV. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 88(7) [10.1103/PhysRevD.88.072009].
Measurement of the e+e-→pp̄ cross section in the energy range from 3.0 to 6.5 GeV
CARPINELLI, MassimoMembro del Collaboration Group
;
2013
Abstract
The e+e-→pp̄ 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→pp̄ and ψ(2S)→pp̄ have also been measured.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.