Measurement of the $\varphi$ meson parameters with CMD-2 detector at VEPP-2M Collider

Abstract

About 300 000 $e^{+}{e}^{-}\to \varphi \to K_L^0{K}_S^0$ events in the center of mass energy range from 984 to 1040 MeV were used for the measurement of the $\varphi$ meson parameters. The following results have been obtained: ${\sigma }_0=(1367\pm 15\pm 21)nb,m_{\varphi }=(1019.504\pm 0.011\pm 0.033)MeV/c^2,{\Gamma }_{\varphi }=(4.477\pm 0.036\pm 0.022)MeV,{\Gamma }_{e^{+}{e}^{-}}\cdot B(\varphi \to K_L^0{K}_S^0)=(4.364\pm 0.048\pm 0.065)\cdot 10^{-4}$ MeV.

13 pages, 5 figures, 5 tables

Cited by in corpus (23)

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