Using a data sample of 6.8 pb−1 collected with the CMD-3 detector at the VEPP-2000 e+e− collider we select about 2700 events of the e+e−→ppˉ process and measure its cross section at 12 energy ponts with about 6\% systematic uncertainty. From the angular distribution of produced nucleons we obtain the ratio ∣GE/GM∣=1.49±0.23±0.30.
@article{arxiv.1507.08013,
title = {Study of the process $e^+e^-\to p\bar{p}$ in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector},
author = {R. R. Akhmetshin and A. N. Amirkhanov and A. V. Anisenkov and V. M. Aulchenko and V. Sh. Banzarov and N. S. Bashtovoy and D. E. Berkaev and A. E. Bondar and A. V. Bragin and S. I. Eidelman and D. A. Epifanov and L. B. Epshteyn and A. L. Erofeev and G. V. Fedotovich and S. E. Gayazov and A. A. Grebenuk and S. S. Gribanov and D. N. Grigoriev and E. M. Gromov and F. V. Ignatov and V. L. Ivanov and S. V. Karpov and A. S. Kasaev and V. F. Kazanin and B. I. Khazin and A. N. Kirpotin and I. A. Koop and O. A. Kovalenko and A. N. Kozyrev and E. A. Kozyrev and P. P. Krokovny and A. E. Kuzmenko and A. S. Kuzmin and I. B. Logashenko and P. A. Lukin and K. Yu. Mikhailov and V. S. Okhapkin and A. V. Otboev and Yu. N. Pestov and S. G. Pivovarov and A. S. Popov and G. P. Razuvaev and A. L. Romanov and A. A. Ruban and N. M. Ryskulov and A. E. Ryzhenenkov and V. E. Shebalin and D. N. Shemyakin and B. A. Shwartz and D. B. Shwartz and A. L. Sibidanov and P. Yu. Shatunov and Yu. M. Shatunov and E. P. Solodov and V. M. Titov and A. A. Talyshev and A. I. Vorobiov and Yu. V. Yudin and Yu. M. Zharinov},
journal= {arXiv preprint arXiv:1507.08013},
year = {2016}
}