e+e -→π+π - π - π0过程的Dalitz图分析

IF 0.5 4区物理与天体物理 Q4 PHYSICS, PARTICLES & FIELDS

Physics of Particles and Nuclei Pub Date : 2025-06-27 DOI:10.1134/S1063779624702356

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

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引用次数: 0

摘要

利用SND探测器积累的积分光度约为70 pb \(^{{ - 1}}\)的数据，研究了在1.075 ～ 1.975 GeV能量范围内的\({{e}^{ + }}{{e}^{ - }} \to {{\pi }^{ + }}{{\pi }^{ - }}{{\pi }^{0}}\)过程。使用包含\(\rho (770)\pi \)、\(\rho (1450)\pi \)和\(\omega {{\pi }^{0}}\)中间状态的模型在每个能量点上拟合Dalitz图分布。得到了中间态截面的能量依赖关系和振幅之间的相对相位。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Dalitz Plot Analysis of the e+e– → π+π–π0 Process

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Dalitz Plot Analysis of the e+e– → π+π–π0 Process

The \({{e}^{ + }}{{e}^{ - }} \to {{\pi }^{ + }}{{\pi }^{ - }}{{\pi }^{0}}\) process is studied in the energy range from 1.075 to 1.975 GeV on the basis of the data with an integrated luminosity of about 70 pb\(^{{ - 1}}\) accumulated at the SND detector. The Dalitz plot distributions are fitted at each energy point using the model that includes the \(\rho (770)\pi \), \(\rho (1450)\pi \), and \(\omega {{\pi }^{0}}\) intermediate states. Energy dependences of the cross sections for the intermediate states and the relative phases between amplitudes are obtained.

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来源期刊

Physics of Particles and Nuclei 物理-物理：粒子与场物理

CiteScore

1.00

自引率

0.00%

发文量

116

审稿时长

6-12 weeks

期刊介绍： The journal Fizika Elementarnykh Chastits i Atomnogo Yadr of the Joint Institute for Nuclear Research (JINR, Dubna) was founded by Academician N.N. Bogolyubov in August 1969. The Editors-in-chief of the journal were Academician N.N. Bogolyubov (1970–1992) and Academician A.M. Baldin (1992–2001). Its English translation, Physics of Particles and Nuclei, appears simultaneously with the original Russian-language edition. Published by leading physicists from the JINR member states, as well as by scientists from other countries, review articles in this journal examine problems of elementary particle physics, nuclear physics, condensed matter physics, experimental data processing, accelerators and related instrumentation ecology and radiology.