Study of the process $e^+ e^- \to K^0_{S}K^0_{L}$ in the center-of-mass energy range 1004--1060 MeV with the CMD-3 detector at the VEPP-2000 $e^+ e^-$ collider

E. A. Kozyrev

doi:10.1016/j.physletb.2016.07.003

paper

Study of the process $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0}$ in the center-of-mass energy range 1004--1060 MeV with the CMD-3 detector at the VEPP-2000 $e^{+} e^{-}$ collider

arXiv:1604.02981 · doi:10.1016/j.physletb.2016.07.003

Abstract

The $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0}$ cross section has been measured in the center-of-mass energy range 1004--1060 MeV at 25 energy points using $6.1 \times 1 0^{5}$ events with $K_{S}^{0} \to π^{+} π^{-}$ decay. The analysis is based on 5.9 pb $^{- 1}$ of an integrated luminosity collected with the CMD-3 detector at the VEPP-2000 $e^{+} e^{-}$ collider. To obtain $ϕ (1020)$ meson parameters the measured cross section is approximated according to the Vector Meson Dominance model as a sum of the $ρ, ω, ϕ$ -like amplitudes and their excitations. This is the most precise measurement of the $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0}$ cross section with a 1.8\% systematic uncertainty.

14 pages, 10 figures, journal paper

Study of the process e+e−→KS0​KL0​ in the center-of-mass energy range 1004--1060 MeV with the CMD-3 detector at the VEPP-2000 e+e− collider

Abstract

Study of the process $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0}$ in the center-of-mass energy range 1004--1060 MeV with the CMD-3 detector at the VEPP-2000 $e^{+} e^{-}$ collider