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Kozyrev, E.A.; Solodov, E.P.; Akhmetshin, R.R.; Amirkhanov, A.N.; Anisenkov, A.V.; Aulchenko, V.M.; Banzarov, V.S.; Bashtovoy, N.S.; Berkaev, D.E.; Bondar, A.E.; Bragin, A.V.; Eidelman, S.I.; Epifanov, D.A.; Epshteyn, L.B.; Erofeev, A.L.; Fedotovich, G.V.; Gayazov, S.E.; Grebenuk, A.A.; Gribanov, S.S.; Grigoriev, D.N.; Ignatov, F.V.; Ivanov, V.L.; Karpov, S.V.; Kasaev, A.S.; Kazanin, V.F.; Korobov, A.A.; Koop, I.A.; Kozyrev, A.N.; Krokovny, P.P.; Kuzmenko, A.E.; Kuzmin, A.S.; Logashenko, I.B.; Lukin, P.A.; Lysenko, A.P.; Mikhailov, K.Yu; Okhapkin, V.S.; Perevedentsev, E.A.; Pestov, Yu.N.; Popov, A.S.; Razuvaev, G.P.; Rogovsky, Yu.A.; Ruban, A.A.; Ryskulov, N.M.; Ryzhenenkov, A.E.; Shebalin, V.E.; Shemyakin, D.N.; Shwartz, B.A.; Shwartz, D.B.; Sibidanov, A.L.; Shatunov, Yu.M.; Talyshev, A.A.; Vorobiov, A.I.; Yudin, Yu.V.
Physics letters. B, 04/2018, Volume: 779Journal Article
The process e+e−→K+K− has been studied using 1.7×106 events from a data sample corresponding to an integrated luminosity of 5.7 pb−1 collected with the CMD-3 detector in the center-of-mass energy range 1010–1060 MeV. The cross section is measured with about 2% systematic uncertainty and is used to calculate the contribution to the anomalous magnetic moment of the muon aμK+K−=(19.33±0.40)×10−10, and to obtain the ϕ(1020) meson parameters. We consider the relationship between the e+e−→K+K− and e+e−→KS0KL0 cross sections and compare it to the theoretical prediction.
