在带电 a0 介子的 3π± 衰变通道中寻找局部强 P 对称破缺的可能性

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/s106377962470045x

V. Petrov, V. Kovalenko

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引用次数: 0

摘要

摘要在高能重离子对撞产生的高热高密度介质中，QCD场可能会发生巨大的拓扑波动，从而导致强相互作用中P对称性的局域违反。我们提出寻找带电介子衰变为三个带电小离子作为局域强奇偶性破缺的标志。我们使用PYTHIA蒙特卡洛发生器，启用了所需的衰变通道，研究了不变质量谱，分析了信号和背景贡献。结果，我们估算出了P-破缺衰变产生显著信号的最小pp对撞事件数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

The Possibilities of Search for the Local Strong P-Symmetry Breaking in Decay of Charged a0 Meson in 3π± Decay Channel

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The Possibilities of Search for the Local Strong P-Symmetry Breaking in Decay of Charged a0 Meson in 3π± Decay Channel

Abstract

In a hot and dense medium created in the collisions of heavy ions at high energy large topological fluctuations of QCD fields can occur, leading to possible effects of the local violation of P-symmetry in strong interactions. We proposed a search for charged \({{a}_{0}}\) meson decay into three charged pions as a signature of the local strong parity breaking. Using PYTHIA Monte Carlo generator with enabled required decay channels we investigated invariant mass spectrum and analyzed the signal and background contributions. As a result, we estimated minimal number of pp collision events for significant signal of the P-breaking decay.

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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.