Molecular components in J/ψ and ρ-π puzzle* * Supported by National Natural Science Foundation of China (11805160, 11747040, 11675082) and Qinglan Project of Jiangsu Province in 2021

IF 3.6 2区物理与天体物理 Q1 PHYSICS, NUCLEAR

中国物理C Pub Date : 2024-05-01 DOI:10.1088/1674-1137/ad2a65

Xing-Dao Guo, Dian-Yong Chen, Xue-Qian Li, Zhong-Yuan Yuan, Shijing Sang

{"title":"Molecular components in J/ψ and ρ-π puzzle* * Supported by National Natural Science Foundation of China (11805160, 11747040, 11675082) and Qinglan Project of Jiangsu Province in 2021","authors":"Xing-Dao Guo, Dian-Yong Chen, Xue-Qian Li, Zhong-Yuan Yuan, Shijing Sang","doi":"10.1088/1674-1137/ad2a65","DOIUrl":null,"url":null,"abstract":"Motivated by the large branching fractions of <inline-formula>\n<tex-math><?CDATA $ J/\\psi \\to f_0 (1710) \\omega/f_0(1710) \\phi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M1.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> and the light exotic candidates, we found that there may exist molecular states composed of <inline-formula>\n<tex-math><?CDATA $ f_0(1710) \\omega $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M2.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> and <inline-formula>\n<tex-math><?CDATA $ f_0 (1710) \\phi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M3.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>, which correspond to <inline-formula>\n<tex-math><?CDATA $ X(2440) $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M4.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> and <inline-formula>\n<tex-math><?CDATA $ X(2680) $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M5.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> observed a few decades ago. The branching fractions of <inline-formula>\n<tex-math><?CDATA $ X(2440) $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M6.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> and <inline-formula>\n<tex-math><?CDATA $ X(2680) $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M7.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>to various <inline-formula>\n<tex-math><?CDATA $ PV $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M8.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> and <inline-formula>\n<tex-math><?CDATA $ KK\\omega(\\phi) $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M9.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> channels were estimated in the molecular scenario. In addition, the large branching fractions of <inline-formula>\n<tex-math><?CDATA $ J/\\psi \\to f_0 (1710) \\omega/f_0(1710) \\phi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M10.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> indicate sizable molecular components in the <inline-formula>\n<tex-math><?CDATA $ J/\\psi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M11.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> state. Thus, we consider <inline-formula>\n<tex-math><?CDATA $ J/\\psi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M12.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>as the superposition of the<inline-formula>\n<tex-math><?CDATA $ c\\bar{c}(1S) $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M13.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>, <inline-formula>\n<tex-math><?CDATA $ f_0(1710) \\omega $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M14.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>, and <inline-formula>\n<tex-math><?CDATA $ f_0 (1710) \\phi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M15.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> molecular states. These molecular components have a significant impact on the light hadron decays of <inline-formula>\n<tex-math><?CDATA $ J/\\psi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M16.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula>, which may elucidate the long standing <inline-formula>\n<tex-math><?CDATA $ \\rho-\\pi $?></tex-math>\n<inline-graphic xlink:href=\"cpc_48_5_053110_M17.jpg\" xlink:type=\"simple\"></inline-graphic>\n</inline-formula> puzzle.","PeriodicalId":10250,"journal":{"name":"中国物理C","volume":null,"pages":null},"PeriodicalIF":3.6000,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"中国物理C","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1674-1137/ad2a65","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}

引用次数: 0

Abstract

Motivated by the large branching fractions of

and the light exotic candidates, we found that there may exist molecular states composed of

and

, which correspond to

and

observed a few decades ago. The branching fractions of

and

to various

and

channels were estimated in the molecular scenario. In addition, the large branching fractions of

indicate sizable molecular components in the

state. Thus, we consider

as the superposition of the

, and

molecular states. These molecular components have a significant impact on the light hadron decays of

, which may elucidate the long standing

puzzle.

查看原文本刊更多论文

J/ψ和ρ-π之谜中的分子成分* * 国家自然科学基金（11805160、11747040、11675082）和2021年江苏省青蓝工程项目资助

受和的大分支分数以及轻奇异候选粒子的激励，我们发现可能存在由和组成的分子态，它们与几十年前观测到的和相对应。在分子情景中，我们估算了和与各种和通道的分支分数。此外，和的大支化分数表明该状态中存在相当大的分子成分。因此，我们将、和分子态视为叠加态。这些分子成分对Ⅳ态的轻强子衰变有重大影响，这可能会阐明长期存在的谜团。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.