Study of e+e- --> p anti-p via initial-state radiation at BABAR
High Energy Physics - Experiment
2013-05-15 v1
Abstract
The process e+e- --> p anti-p gamma is studied using 469 fb-1 of integrated luminosity collected with the BABAR detector at the PEP-II collider, at an e+e- center-of-mass energy of 10.6 GeV. From the analysis of the p anti-p invariant mass spectrum, the energy dependence of the cross section for e+e- --> p anti-p is measured from threshold to 4.5 GeV. The energy dependence of the ratio of electric and magnetic form factors, |G_E/G_M|, and the asymmetry in the proton angular distribution are measured for p anti-p masses below 3 GeV. We also measure the branching fractions for the decays J/psi --> p anti-p and psi(2S) --> p anti p.
Keywords
Cite
@article{arxiv.1302.0055,
title = {Study of e+e- --> p anti-p via initial-state radiation at BABAR},
author = {The BABAR Collaboration},
journal= {arXiv preprint arXiv:1302.0055},
year = {2013}
}
Comments
23 pages, 20 postscript figures, submitted to Phys. Rev. D