Abstract <p>The cross section for the <InlineEquation ID="IEq5"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3539_Article_IEq5.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="138" /> </InlineMediaObject> <EquationSource Format="TEX">\(e^{+}e^{-}\to\pi^{+}\pi^{-}2\pi^{0}\eta\)</EquationSource>  </InlineEquation> process is measured in the center-of-mass energy region 1.55–2 GeV for integrated luminosity 146 pb<InlineEquation ID="IEq6"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3539_Article_IEq6.gif" Format="GIF" Height="11" Rendition="HTML" Resolution="72" Type="Linedraw" Width="18" /> </InlineMediaObject> <EquationSource Format="TEX">\({}^{-1}\)</EquationSource>  </InlineEquation> collected by the SND detector at the VEPP-2000 <InlineEquation ID="IEq7"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3539_Article_IEq7.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="38" /> </InlineMediaObject> <EquationSource Format="TEX">\(e^{+}e^{-}\)</EquationSource>  </InlineEquation> collider. The obtained cross section is fitted with the VMD model with <InlineEquation ID="IEq8"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3539_Article_IEq8.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="55" /> </InlineMediaObject> <EquationSource Format="TEX">\(\rho(1700)\)</EquationSource>  </InlineEquation> and <InlineEquation ID="IEq9"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11450_2025_3539_Article_IEq9.gif" Format="GIF" Height="19" Rendition="HTML" Resolution="72" Type="Linedraw" Width="55" /> </InlineMediaObject> <EquationSource Format="TEX">\(\rho(2150)\)</EquationSource>  </InlineEquation> resonances.</p>

Measurement of the \({e^{+}e^{-}\to}{\pi^{+}\pi^{-}2\pi^{0}\eta}\) Cross Section below \(\sqrt{{s}}{=2}\) GeV

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发表日期：

2025年2月1日

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M. N. Achasov,
A. Yu. Barnyakov,
K. I. Beloborodov,
A. V. Berdyugin,
D. E. Berkaev,
A. G. Bogdanchikov,
A. A. Botov,
V. S. Denisov,
T. V. Dimova,
V. P. Druzhinin,
E. A. Eminov,
L. B. Fomin,
L. V. Kardapoltsev,
A. A. Kattsin,
A. G. Kharlamov,
A. N. Kirpotin,
I. A. Koop,
A. A. Korol,
D. P. Kovrizhin,
A. P. Kryukov,
A. S. Kupich,
A. P. Lysenko,
N. A. Melnikova,
N. Yu. Muchnoy,
A. E. Obrazovsky,
E. V. Pakhtusova,
E. A. Perevedentsev,
K. V. Pugachev,
Yu. A. Rogovsky,
S. I. Serednyakov,
Yu. M. Shatunov,
D. A. Shtol,
Z. K. Silagadze,
I. K. Surin,
M. V. Timoshenko,
Yu. V. Usov,
I. M. Zemlyansky,
V. N. Zhabin,
V. V. Zhulanov

摘要

Abstract

The cross section for the \(e^{+}e^{-}\to\pi^{+}\pi^{-}2\pi^{0}\eta\) process is measured in the center-of-mass energy region 1.55–2 GeV for integrated luminosity 146 pb \({}^{-1}\) collected by the SND detector at the VEPP-2000 \(e^{+}e^{-}\) collider. The obtained cross section is fitted with the VMD model with \(\rho(1700)\) and \(\rho(2150)\) resonances.