Study of the process e(+)e(-) ->(KSK +/-)-K-0 pi(-/+)pi(+)pi(-) in the c.m. energy range 1.6-2.0 GeV with the CMD-3 detector

A cross section of the process e(+) e(-). K-S(0) K-+/-pi inverted perpendicular pi(+) pi- has been measured for the first time using a data sample of 185.4 pb-1collected with the CMD-3detector at the VEPP-2000e(+)e(-) collider. With the K-S(0) ->pi+pi- decay detection, 373 +/- 20 and 514 +/- 28 signal events have been selected with six and five reconstructed tracks, respectively, in the center-of-mass energy range 1.6-2.0GeV. The total systematic uncertainty of the cross section is about 15%. A study of the production dynamics allows us to extract a contribution from the e(+)e(-)-> f1(1285)pi+ pi- intermediate state and to measure the corresponding cross section. The intermediate states with the f1(1420) and f1(1510) resonances have been observed. (c) 2022 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).