Physics Letters B (Sep 2016)

Study of the process e+e−→KS0KL0 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,
  • E.P. Solodov,
  • A.N. Amirkhanov,
  • A.V. Anisenkov,
  • V.M. Aulchenko,
  • V.S. Banzarov,
  • N.S. Bashtovoy,
  • D.E. Berkaev,
  • A.E. Bondar,
  • A.V. Bragin,
  • S.I. Eidelman,
  • D.A. Epifanov,
  • L.B. Epshteyn,
  • A.L. Erofeev,
  • G.V. Fedotovich,
  • S.E. Gayazov,
  • A.A. Grebenuk,
  • S.S. Gribanov,
  • D.N. Grigoriev,
  • F.V. Ignatov,
  • V.L. Ivanov,
  • S.V. Karpov,
  • A.S. Kasaev,
  • V.F. Kazanin,
  • A.N. Kirpotin,
  • A.A. Korobov,
  • O.A. Kovalenko,
  • A.N. Kozyrev,
  • I.A. Koop,
  • P.P. Krokovny,
  • A.E. Kuzmenko,
  • A.S. Kuzmin,
  • I.B. Logashenko,
  • P.A. Lukin,
  • K.Yu. Mikhailov,
  • V.S. Okhapkin,
  • A.V. Otboev,
  • Yu.N. Pestov,
  • A.S. Popov,
  • G.P. Razuvaev,
  • A.A. Ruban,
  • N.M. Ryskulov,
  • A.E. Ryzhenenkov,
  • A.I. Senchenko,
  • V.E. Shebalin,
  • D.N. Shemyakin,
  • B.A. Shwartz,
  • D.B. Shwartz,
  • A.L. Sibidanov,
  • P.Yu. Shatunov,
  • Yu.M. Shatunov,
  • V.M. Titov,
  • A.A. Talyshev,
  • A.I. Vorobiov,
  • Yu.V. Yudin

DOI
https://doi.org/10.1016/j.physletb.2016.07.003
Journal volume & issue
Vol. 760, no. C
pp. 314 – 319

Abstract

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The e+e−→KS0KL0 cross section has been measured in the center-of-mass energy range 1004–1060 MeV at 25 energy points using 6.1×105 events with KS0→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−→KS0KL0 cross section with a 1.8% systematic uncertainty.