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Study of the process e+e−→KS0KS0π+π− in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector

R.R. Akhmetshin,A.N. Amirkhanov,A.V. Anisenkov,V.M. Aulchenko,V.Sh. 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,F.J. Grancagnolo,A.A. Grebenuk,S.S. Gribanov,D.N. Grigoriev,F.V. Ignatov

Physics Letters B（2020）

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Abstract
The cross section of the process e+e−→KS0KS0π+π− has been measured using a data sample of 56.7 pb−1 collected with the CMD-3 detector at the VEPP-2000 e+e− collider. 596±27 and 210±18 signal events have been selected with six and five detected tracks, respectively, in the center-of-mass energy range 1.6–2.0 GeV. The total systematic uncertainty of the cross section is about 10%. The study of the production dynamics confirms the dominance of the K⁎(892)+K⁎(892)− intermediate state.
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