Abstract

A preliminary result of an analysis of the process \(e^{+}e^{-}\to K_{S}K^{\pm}\pi^{\mp}\) whose cross section was measured in the range of center-of-mass collision energies between 1.2 and 2 GeV is presented. The analysis is based on the data sample corresponding to an integrated luminosity of about 120 pb\({}^{-1}\) accumulated with the CMD-3 detector at the VEPP-2000 electron–positron collider. A procedure for separating signal events is developed, and the dominance of the \(K^{*}(892)K\) neutral mode is confirmed. The cross section for the process \(e^{+}e^{-}\to K_{S}K^{\pm}\pi^{\mp}\) is measured to a precision higher than that in earlier experiments. This permits improving the accuracy in measuring the mass and width of the \(\phi\)(1680) meson, testing the accuracy of the isotopic relations, and more accurately calculating the hadronic contribution to the muon anomalous magnetic moment (\(g-2\)).

中文翻译：

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使用CMD-3检测器研究过程$$ \ boldsymbol {e ^ {+} e ^ {-} \至K_ {S} K ^ {\ pm} \ pi ^ {\ mp}} $$

摘要

分析过程\（e ^ {+} e ^ {-} \至K_ {S} K ^ {\ pm} \ pi ^ {\ mp} \的分析的初步结果，该过程的横截面在该范围内给出了质量碰撞能量在1.2和2 GeV之间的分布。该分析基于数据样本，该样本对应于在VEPP-2000电子-正负电子对撞机上使用CMD-3检测器积累的约120 pb \（{} ^ {-1} \）的综合光度。提出了分离信号事件的程序，并确定了\（K ^ {*}（892）K \）中立模式的优势。测量过程\（e ^ {+} e ^ {-} \到K_ {S} K ^ {\ pm} \ pi ^ {\ mp} \的横截面的精度要高于早期实验的精度。这允许提高测量物体的质量和宽度的精度。\（\ phi \）（1680）介子，测试同位素关系的准确性，并更准确地计算强子对介子异常磁矩（\（g-2 \））的贡献。