Abstract
A preliminary result of an analysis of the process \(e^{+}e^{-}\to K_{S}K^{\pm}\pi^{\mp}\) whose cross section was measured in the range of center-of-mass collision energies between 1.2 and 2 GeV is presented. The analysis is based on the data sample corresponding to an integrated luminosity of about 120 pb\({}^{-1}\) accumulated with the CMD-3 detector at the VEPP-2000 electron–positron collider. A procedure for separating signal events is developed, and the dominance of the \(K^{*}(892)K\) neutral mode is confirmed. The cross section for the process \(e^{+}e^{-}\to K_{S}K^{\pm}\pi^{\mp}\) is measured to a precision higher than that in earlier experiments. This permits improving the accuracy in measuring the mass and width of the \(\phi\)(1680) meson, testing the accuracy of the isotopic relations, and more accurately calculating the hadronic contribution to the muon anomalous magnetic moment (\(g-2\)).
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ACKNOWLEDGMENTS
We thank the VEPP-2000 team for excellent machine operation.
Funding
This work was supported by Russian Foundation for Basic Research, grants nos. 20-52-00008 Bel_a (analysis of dynamics of the process \(e^{+}e^{-}\to K_{S}K^{\pm}\pi^{\mp}\)) and 17-02-00897 (method for signal-event selection).
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1)Budker Institute of Nuclear Physics, SB RAS, Novosibirsk, 630090 Russia.
\({}^{{2)}}\)Novosibirsk State University, Novosibirsk, 630090 Russia.
\({}^{{3)}}\)Novosibirsk State Technical University, Novosibirsk, 630092 Russia.
\({}^{{4)}}\)University of Victoria, Victoria, BC, V8W 3P6 Canada.
\({}^{{5)}}\)Lebedev Physical Institute RAS, Moscow, 119333 Russia.
CMD-3 collaboration: R. R. Akhmetshin\({}^{1),2)}\), A. N. Amirkhanov\({}^{1),2)}\), A. V. Anisenkov\({}^{1),2)}\), V. M. Aulchenko\({}^{1),2)}\), V. Sh. Banzarov\({}^{1)}\), N. S. Bashtovoy\({}^{1)}\), D. E. Berkaev\({}^{1),2)}\), A. E. Bondar\({}^{1),2)}\), A. V. Bragin\({}^{1)}\), A. I. Vorobiov\({}^{1)}\), S. E. Gayazov\({}^{1),2)}\), A. A. Grebenuk\({}^{1),2)}\), S. S. Gribanov\({}^{1),2)}\), D. N. Grigoriev\({}^{1),2),3)}\), D. A. Epifanov\({}^{1)}\), A. L. Erofeev\({}^{1),2)}\), F. V. Ignatov\({}^{1)}\), S. V. Karpov\({}^{1)}\), V. F. Kazanin\({}^{1),2)}\), A. N. Kozyrev\({}^{1)}\), E. A. Kozyrev\({}^{1),2)}\), I. A. Koop\({}^{1),2)}\), A. A. Korobov\({}^{1),2)}\), P. P. Krokovny\({}^{1),2)}\), A. E. Kuzmenko\({}^{3),1)}\), A. S. Kuzmin\({}^{1),2)}\), I. B. Logashenko\({}^{1),2)}\), P. A. Lukin\({}^{1),2)}\), K. Yu. Mikhailov\({}^{1),2)}\), V. S. Okhapkin\({}^{1)}\), Yu. N. Pestov\({}^{1)}\), A. S. Popov\({}^{1),2)}\), G. P. Razuvaev\({}^{2)}\), A. A. Ruban\({}^{1)}\), A. E. Ryzhenenkov\({}^{1),2)}\), N. M. Ryskulov\({}^{1)}\), A. V. Semenov\({}^{1),2)}\), A. L. Sibidanov\({}^{4)}\), E. P. Solodov\({}^{1),2)}\), A. A. Talyshev\({}^{1),2)}\), V. M. Titov\({}^{1)}\), S. S. Tolmachev\({}^{1),2)}\), V. E. Shebalin\({}^{1),2)}\), B. A. Shwartz\({}^{1),2)}\), D. B. Shwartz\({}^{1),2)}\), Yu. M. Shatunov\({}^{1)}\), S. I. Eidelman\({}^{2),1),5)}\), L. B. Epshteyn\({}^{1),3)}\), Yu. V. Yudin\({}^{1)}\)
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Uskov, A.A., Fedotovich, G.V., Ivanov, V.L. et al. Study of the Process \(\boldsymbol{e^{+}e^{-}\to K_{S}K^{\pm}\pi^{\mp}}\) with the CMD-3 Detector. Phys. Atom. Nuclei 84, 45–51 (2021). https://doi.org/10.1134/S1063778821010221
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DOI: https://doi.org/10.1134/S1063778821010221