Study of the process $e^{+}{e}^{-}\to K^{+}{K}^{-}$ in the center-of-mass energy range 1010--1060~MeV with the CMD-3 detector

Abstract

The process $e^{+}{e}^{-}\to K^{+}{K}^{-}$ has been studied using $1.7\times 10^6$ 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 measured with an about 2\% systematic uncertainty and it is used to calculate the contribution to the anomalous magnetic moment of the muon $a_{\mu }^{K^{+}{K}^{-}}=(19.33\pm 0.40)\times 10^{-10}$, and to obtain the $\varphi (1020)$ meson parameters. We consider the relationship between the $e^{+}{e}^{-}\to K^{+}{K}^{-}$ and $e^{+}{e}^{-}\to K_S^0{K}_L^0$ cross sections and compare it to the theoretical expectations.

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• Isoscalar and isovector kaon form factors from $e^{+}{e}^{-}$ and $\tau$ data
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• Resonances $\rho (1450{)}^{+}$ and $\rho (1700{)}^{+}$ in $B\to DKK$ decays
• The electromagnetic form factors of ${\Lambda }_c$ hyperon in the vector meson dominance model
• Wave-Packet Effects: A Solution for Isospin Anomalies in Vector-Meson Decay
• Low-mass enhancement of kaon pairs in $B^{+}\to {\bar{D}}^{(\ast )0}{K}^{+}{\bar{K}}^0$ and $B^0\to D^{(\ast )-}{K}^{+}{\bar{K}}^0$ decays
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