Recent Results from the CMD-3 Detector at the VEPP-2000 e+e– Collider

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

Physics of Particles and Nuclei Pub Date : 2024-08-18 DOI:10.1134/S1063779624700023

P. A. Lukin

引用次数: 0

Abstract

We report about measurement of the \({{e}^{ + }}{{e}^{ - }} \to {{\pi }^{ + }}{{\pi }^{ - }}\) process cross section performed with the CMD-3 detector at VEPP-2000 \({{e}^{ + }}{{e}^{ - }}\) collider. Integrated luminosity for the measurement is about 88 pb^–1 collected in center-of-mass energy range from 0.32 to 1.2 GeV. Systematic error of the cross section near \(\rho \)(770) resonance is about 0.7%. The cross section values are used for evalution of the hadronic contribution to \({{(g - 2)} \mathord{\left/ {\vphantom {{(g - 2)} 2}} \right. \kern-0em} 2}\) of muon.

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VEPP-2000 e+e 对撞机上的 CMD-3 探测器的最新成果

我们报告了在VEPP-2000 \({{e}^{ + }}{{e}^{ - }} 对撞机上利用CMD-3探测器对\({{e}^{ + }}{{e}^{ - }}\to {{pi }^{ + }}{{pi }^{ - }}\) 过程截面的测量。在 0.32 到 1.2 GeV 的质心能量范围内收集到的测量综合光度约为 88 pb-1。靠近 \(\rho \)(770) 共振的截面的系统误差约为 0.7%。这些截面值用于评估强子对 \({{(g - 2)} \mathord{\left/ {\vphantom {{(g - 2)} 2}} 的贡献。\right.\kern-0em} 2}）。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.