Abstract <p>The results of the cross section measurement of the process <InlineEquation ID="IEq3"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="133" /> </InlineMediaObject> <EquationSource Format="TEX">\({{e}^{ + }}{{e}^{ - }} \to K_{S}^{0}{{K}^{ \pm }}{{\pi }^{ \mp }}\)</EquationSource> <!--PhysPart2470175Fedotovich-m3--> </InlineEquation> at <InlineEquation ID="IEq4"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq4.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="38" /> </InlineMediaObject> <EquationSource Format="TEX">\({{e}^{ + }}{{e}^{ - }}\)</EquationSource> <!--PhysPart2470175Fedotovich-m4--> </InlineEquation> collider VEPP-2000 are presented. The analysis is based on the 115.4 pb<sup>–1</sup> integrated luminosity accumulated by the CMD-3 detector during several runs with energy scan. The cross section was approximated in the frame of the VMD model, using isospin algebra to obtain the resonance parameters for the isoscalar <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq5.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="56" /> </InlineMediaObject> <EquationSource Format="TEX">\(\phi (1680)\)</EquationSource> <!--PhysPart2470175Fedotovich-m5--> </InlineEquation> and isovector <InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq6.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="55" /> </InlineMediaObject> <EquationSource Format="TEX">\(\rho (1450)\)</EquationSource> <!--PhysPart2470175Fedotovich-m6--> </InlineEquation> mesons. The data of the process <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="133" /> </InlineMediaObject> <EquationSource Format="TEX">\({{e}^{ + }}{{e}^{ - }} \to K_{S}^{0}{{K}^{ \pm }}{{\pi }^{ \mp }}\)</EquationSource> <!--PhysPart2470175Fedotovich-m7--> </InlineEquation> were also used to estimate hadronic contribution to <InlineEquation ID="IEq8"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq8.gif" Format="GIF" Height="22" Rendition="HTML" Resolution="72" Type="Linedraw" Width="60" /> </InlineMediaObject> <EquationSource Format="TEX">\({{(g - 2)}_{\mu }}\)</EquationSource> <!--PhysPart2470175Fedotovich-m8--> </InlineEquation> of muon: <InlineEquation ID="IEq9"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11496_2025_9018_Article_IEq9.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="239" /> </InlineMediaObject> <EquationSource Format="TEX">\((0.86 \pm {{0.01}_{{{\text{stat}}}}} \pm {{0.04}_{{{\text{syst}}}}}) \times {{10}^{{ - 10}}}\)</EquationSource> <!--PhysPart2470175Fedotovich-m9--> </InlineEquation>.</p>

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Study of the \({{e}^{ + }}{{e}^{ - }} \to K_{S}^{0}{{K}^{ \pm }}{{\pi }^{ \mp }}\) Process with the CMD-3 Detector

  • G. V. Fedotovich,
  • A. A. Uskov,
  • S. S. Gribanov

摘要

Abstract

The results of the cross section measurement of the process \({{e}^{ + }}{{e}^{ - }} \to K_{S}^{0}{{K}^{ \pm }}{{\pi }^{ \mp }}\) at \({{e}^{ + }}{{e}^{ - }}\) collider VEPP-2000 are presented. The analysis is based on the 115.4 pb–1 integrated luminosity accumulated by the CMD-3 detector during several runs with energy scan. The cross section was approximated in the frame of the VMD model, using isospin algebra to obtain the resonance parameters for the isoscalar \(\phi (1680)\) and isovector \(\rho (1450)\) mesons. The data of the process \({{e}^{ + }}{{e}^{ - }} \to K_{S}^{0}{{K}^{ \pm }}{{\pi }^{ \mp }}\) were also used to estimate hadronic contribution to \({{(g - 2)}_{\mu }}\) of muon: \((0.86 \pm {{0.01}_{{{\text{stat}}}}} \pm {{0.04}_{{{\text{syst}}}}}) \times {{10}^{{ - 10}}}\) .