Some remarks on compositeness of * * Supported in part by the National Nature Science Foundations of China (12335002, 12375078, 11975028). H.Q. Zheng and Z. Xiao are also Supported by "the Fundamental Research Funds for the Central Universities"

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-04-01 DOI:10.1088/1674-1137/ad1a0b

Chang Chen, Ce Meng, Zhiguang Xiao, Han-Qing Zheng

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引用次数: 0

Abstract

Recently, the LHCb experimental group found an exotic state

from the

process. A key question is whether it is just a molecule or may have a confined tetraquark ingredient. To investigate this, different methods were used, including a two-channel (

and

) K-matrix unitarization and a single-channel Flatté-like parametrization method analyzed utilizing the pole counting rule and spectral density function sum rule. These analyses demonstrated that

is a molecular state, although the possibility that there may exist an elementary ingredient cannot be excluded, according to an approximate analysis of its production rate.

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国家自然科学基金项目（12335002、12375078、11975028）的部分资助。郑海强和肖智还得到 "中央高校基本科研业务费 "的资助。

最近，LHCb 实验小组从这一过程中发现了一种奇异状态。一个关键问题是，它究竟只是一个分子，还是可能有一个封闭的四夸克成分。为了研究这个问题，我们使用了不同的方法，包括双通道（和）K 矩阵单元化和利用极点计数规则和谱密度函数和规则分析的单通道弗拉泰类参数化方法。这些分析表明，这是一种分子状态，但根据对其产生率的近似分析，不能排除存在基本成分的可能性。

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

中国物理C 物理-物理：核物理

CiteScore

6.50

自引率

8.30%

发文量

8976

审稿时长

1.3 months

期刊介绍： Chinese Physics C covers the latest developments and achievements in the theory, experiment and applications of: Particle physics; Nuclear physics; Particle and nuclear astrophysics; Cosmology; Accelerator physics. The journal publishes original research papers, letters and reviews. The Letters section covers short reports on the latest important scientific results, published as quickly as possible. Such breakthrough research articles are a high priority for publication. The Editorial Board is composed of about fifty distinguished physicists, who are responsible for the review of submitted papers and who ensure the scientific quality of the journal. The journal has been awarded the Chinese Academy of Sciences ‘Excellent Journal’ award multiple times, and is recognized as one of China''s top one hundred key scientific periodicals by the General Administration of News and Publications.