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.
Highlights
The cross section of pb−1 collected with the the process CMD-3 e+e− → detector at tKhS0eπV+EπP−P-2h0a0s0beee+ne−mceoalsluidreedr
In this paper we report the analysis of the data sample of 56.7 pb−1 collected at the CMD-3 detector in the 1.6–2.0 GeV Ec.m
To understand the detector response to processes under study and to obtain the detection efficiency, we have developed Monte
Summary
State, with a dominant production of intermediate state for the c.m. energies the below 2.5 GeV. (dots) in comparison simulated one (a solid histogram). With our data we cannot quantitatively extract a contribution from production of a single K ∗(892) or from events without K ∗(892)’s. These distributions indicate that the ρ(770) resonance in the π +π − invariant mass, and the K1(1270) resonance in the K S0π +π − invariant mass distribution cannot be excluded. The solid histograms show the simulated distributions of the K ∗(892)+ K ∗(892)− intermediate state summed with the contribution from (1270)K intermediate state. The latter contribution is shown by the dotted histogram. With the current data sample we cannot quantitatively extract this contribution
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