\({{e}^{ + }}{{e}^{ - }} \to {{K}_{S}}{{K}_{L}}\)反应中φ(1020)参数的测量

IF 0.6 4区物理与天体物理 Q4 PHYSICS, PARTICLES & FIELDS

Physics of Particles and Nuclei Pub Date : 2025-05-20 DOI:10.1134/S1063779624701715

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

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引用次数: 0

摘要

在VEPP-2000对撞机上用SND探测器在1000 ～ 1100 MeV的质心能量范围内测量了\({{e}^{ + }}{{e}^{ - }} \to {{K}_{S}}{{K}_{L}}\)截面。在矢量介子优势模型中，通过与测量截面的拟合来确定\(\phi (1020)\)质量和宽度以及分支分数的乘积\(B(\phi \to {{K}_{S}}{{K}_{L}})B(\phi \to {{e}^{ + }}{{e}^{ - }})\)。

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Measurement of ϕ(1020) Parameters in the \({{e}^{ + }}{{e}^{ - }} \to {{K}_{S}}{{K}_{L}}\) Reaction

The \({{e}^{ + }}{{e}^{ - }} \to {{K}_{S}}{{K}_{L}}\) cross section is measured in the center-of-mass energy range from 1000 to 1100 MeV in the experiment with the SND detector at the VEPP-2000 collider. The \(\phi (1020)\) mass and width and the product of the branching fractions \(B(\phi \to {{K}_{S}}{{K}_{L}})B(\phi \to {{e}^{ + }}{{e}^{ - }})\) are determined from the fit to the measured cross section in the vector meson dominance model.

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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.