This title appears in the Scientific Report :
2013
Please use the identifier:
http://hdl.handle.net/2128/5542 in citations.
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.87.092005 in citations.
Study of e+e−→ppˉ via initial-state radiation at BABAR
Study of e+e−→ppˉ via initial-state radiation at BABAR
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...
Saved in:
Please use the identifier: http://dx.doi.org/10.1103/PhysRevD.87.092005 in citations.
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. |