The process e+e-→pp¯γ is studied using 469fb-1 of integrated luminosity collected with the BABAR detector at the SLAC National Accelerator Laboratory, at an e+e- center-of-mass energy of 10.6 GeV. From the analysis of the pp¯ invariant mass spectrum, the energy dependence of the cross section for e+e-→pp¯ is measured from threshold to 4.5 GeV. The energy dependence of the ratio of electric and magnetic form factors, |GE/GM|, and the asymmetry in the proton angular distribution are measured for pp¯ masses below 3 GeV. The branching fractions for the decays J/ψ→pp¯ and ψ(2S)→pp¯ are also determined.

Study of e^{+}e^{-}→pp[over ¯] via initial-state radiation at BABAR / J. P., L., V., P., V., T., E., G., A., P., G., E., B., S., D. N., B., L. T., K., Kolomensky, Y.u.G., G., L., H., K., T., S., D. J., A., C., H., T. S., M., J. A., M., R. Y., S.o., A., K., V. E., B., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 87:(2013), pp. 092005-1-092005-18. [10.1103/PhysRevD.87.092005]

Study of e^{+}e^{-}→pp[over ¯] via initial-state radiation at BABAR

LANCERI, LIVIO;VITALE, LORENZO;
2013-01-01

Abstract

The process e+e-→pp¯γ is studied using 469fb-1 of integrated luminosity collected with the BABAR detector at the SLAC National Accelerator Laboratory, at an e+e- center-of-mass energy of 10.6 GeV. From the analysis of the pp¯ invariant mass spectrum, the energy dependence of the cross section for e+e-→pp¯ is measured from threshold to 4.5 GeV. The energy dependence of the ratio of electric and magnetic form factors, |GE/GM|, and the asymmetry in the proton angular distribution are measured for pp¯ masses below 3 GeV. The branching fractions for the decays J/ψ→pp¯ and ψ(2S)→pp¯ are also determined.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2768736
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