Measuring the \({{e}^{ + }}{{e}^{ - }} \to {{\pi }^{ + }}{{\pi }^{ - }}2{{\pi }^{0}}\eta \) Cross Section with the SND Detector

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发表日期：

2025年4月1日

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A. A. Botov,
M. N. Achasov,
A. Yu. Barnyakov,
K. I. Beloborodov,
A. V. Berdyugin,
A. G. Bogdanchikov,
T. V. Dimova,
V. P. Druzhinin,
V. N. Zhabin,
L. V. Kardapoltsev,
D. P. Kovrizhin,
A. A. Korol,
A. S. Kupich,
A. P. Kryukov,
N. A. Melnikova,
N. Yu. Muchnoy,
A. E. Obrazovsky,
E. V. Pakhtusova,
K. V. Pugachev,
S. I. Serednyakov,
Z. K. Silagadze,
I. K. Surin,
A. G. Kharlamov,
D. A. Shtol

摘要

Abstract

The \({{e}^{ + }}{{e}^{ - }} \to {{\pi }^{ + }}{{\pi }^{ - }}2{{\pi }^{0}}\eta \) process was studied by using the data collected with the SND detector at the VEPP-2000 \({{e}^{ + }}{{e}^{ - }}\) -collider in 2011, 2012, and 2019–2021. The cross section of this process was measured in the center-of-mass energy region from 1.55 to 2 GeV. The cross section was fitted well by the vector dominance model (VDM) with the \(\rho (1700)\) and \(\rho (2150)\) resonances. Comparison with the only previous measurement at the BABAR detector was performed.