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Measurement of the Cross Section for the Process $${e^{+}e^{-}}{\to}{\omega\pi}^{{0}}{\to}{\pi}^{{+}}{\pi}^{{-}}{\pi}^{{0}}{\pi}^{{0}}$$ with the SND Detector
Physics of Atomic Nuclei ( IF 0.3 ) Pub Date : 2021-04-13 , DOI: 10.1134/s106377882101004x
M. N. Achasov , A. Yu. Barnyakov , A. A. Baykov , K. I. Beloborodov , A. V. Berdyugin , A. G. Bogdanchikov , A. A. Botov , V. B. Golubev , T. V. Dimova , V. P. Druzhinin , V. N. Zhabin , V. V. Zhulanov , L. V. Kardapoltsev , D. P. Kovrizhin , A. A. Korol , A. S. Kupich , K. A. Martin , N. A. Melnikova , N. Yu. Muchnoi , A. E. Obrazovsky , E. V. Pakhtusova , K. V. Pugachev , Ya. S. Savchenko , S. I. Serednyakov , Z. K. Silagadze , I. K. Surin , Yu. V. Usov , A. G. Kharlamov , D. A. Shtol

Abstract

The process \(e^{+}e^{-}\to\omega\pi^{0}\to\pi^{+}\pi^{-}\pi^{0}\pi^{0}\) was studied in the energy range between 1 and 2 GeV to the best precision in the world. The data used correspond to an integrated luminosity of \(35\text{ pb}^{-1}\) accumulated with the SND detector at the VEPP-2000 \(e^{+}e^{-}\) collider. The statistical accuracy of the measured cross section is 2 to 22\(\%\), whereas the systematic uncertainty is 2.6 to 14\(\%\). The present results agree with the results of earlier measurements but have a better precision.



中文翻译:

测量过程的横截面$$ {e ^ {+} e ^ {-}} {\至} {\ omega \ pi} ^ {{0}} {\至} {\ pi} ^ {{+ }} {\ pi} ^ {{-}} {\ pi} ^ {{0}} {\ pi} ^ {{0}} $$和SND检测器

摘要

进程\(e ^ {+} e ^ {-} \ to \ omega \ pi ^ {0} \ to \ pi ^ {+} \ pi ^ {-} \ pi ^ {0} \ pi ^ {0} \)在1至2 GeV的能量范围内进行了研究,以达到世界上最高的精度。所使用的数据对应于在VEPP-2000 \(e ^ {+} e ^ {-} \)对撞机上用SND检测器累积的\(35 \ text {pb} ^ {-1} \)的综合亮度。测量横截面的统计精度为2至22 \(\%\),而系统不确定度为2.6至14 \(\%\)。目前的结果与早期的测量结果一致,但精度更高。

更新日期:2021-04-13
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