| In particle physics,the Standard Model has been developed rapidly and perfectly,but it still needs to be tested accurately,which presents new challenges to experimentalists.The perturbation theory can be used to explain quantum chromodynamics(QCD)in the high energy range,but the perturbation theory is not applicable in the low energy range.The energy range of BESIII experiment is just from 2.0000 GeV to 4.7000 GeV,which can make a contribution to the study of parameters in the low energy range.Moreover,there are many resonances in the low energy range,and understanding the mechanism of the generation and decay of these resonances is crucial to QCD theory.BESⅢ collaboration has studied a variety of strong decay process,such as e~+e~-→K~+K~-,e~+e~-→K~+K~-K~+K~-,e~+e~-→φK~+K~-and soon.The cross section of the process e~+e~-→φK~+K~-,e~+e~-→K+K K~+K~-increases suddenly near 2.2324 GeV,which indicates that there may be resonance state near this energy point.To further study this possible resonance state,more strong decay processes need to be studied.The final state of process e~+e~-→ωK~+K~-is similar to that of e~+e~-→φK~+K~-,e~+e~-→K~+K~-K~+K~-,and the study of e~+e~-→ωK~+K~-is supplement to e~+e~-→φK~+K~-,e~+e~-→K~+K~-K~+K~-.Precious experiments have studied e~+e~-→ωK~+K~-,but the error is large.So the measurement accuracy needs to be improved.The scanning data collected by BESIII detector in 2015 ranged from 2.0000 to 3.0800 GeV,which is the highest statistical data in this energy range in the world at present.This paper used these data to study the process e~+e~-→ωK~+K~-.The generating cross section of this process is measured and the invariant mass of all the combinations of final states is studied.The error of the measurement results resulting in the cross section is reduced and the accuracy is greatly improved.No sudden increase at 2.2324 GeV is found.No intermediate process has been found in the study of the invariant mass of all the combinations of final state particle in the process. |
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