在每核子动量为 3.8 GeV/c 的 dCu 对撞中观测到 ~17 和 ~38 MeV/c2 处的γγ不变质量谱结构

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/S1063779624700412

Kh. U. Abraamyan, Ch. Austin, M. I. Baznat, K. K. Gudima, M. A. Kozhin, S. G. Reznikov, A. S. Sorin

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引用次数: 0

摘要

本文介绍了在每个核子的动量为 3.83 GeV/c 时，在 \(d\)Cu 相互作用中产生的光子对的不变质量谱分析结果。在不变质量约为 17 和 38 MeV/c2 时，观测到了增强结构形式的信号。报告还介绍了对观测到的信号进行测试的结果，包括蒙特卡罗模拟的结果。测试结果支持这样的结论，即观测到的信号是质量约为 17 和 38 MeV/c2 的粒子衰变为一对光子的探测结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Observation of Structures at ~17 and ~38 MeV/c2 in the γγ Invariant Mass Spectrum in dCu Collisions at a Momentum of 3.8 GeV/c per Nucleon

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Observation of Structures at ~17 and ~38 MeV/c2 in the γγ Invariant Mass Spectrum in dCu Collisions at a Momentum of 3.8 GeV/c per Nucleon

The results of an analysis of the invariant mass spectra of photon pairs produced in \(d\)Cu interactions at a momentum of 3.83 GeV/c per nucleon, are presented. Signals in the form of enhanced structures at invariant masses of about 17 and 38 MeV/c² are observed. The results of testing of the observed signals, including the results of the Monte Carlo simulation are presented. The test results support the conclusion that the observed signals are the consequence of detection of the particles with masses of about 17 and 38 MeV/c² decaying into a pair of photons.

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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.