Spectroscopic analysis of hidden-charm pentaquarks

IF 3.4 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

Journal of Physics G: Nuclear and Particle Physics Pub Date : 2024-02-01 DOI:10.1088/1361-6471/ad1eb8

Ankush Sharma, Alka Upadhyay

引用次数: 0

Abstract

In this work, the multiquark approach is used to analyze the spectroscopy of hidden-charm pentaquark states, motivated by recent discoveries at the LHCb collaboration. Using the SU(3) flavor representation, pentaquarks having J ^P = 5/2⁻ are arranged into 10 (decuplet) of the SU(3) flavor multiplets. The masses of pentaquarks are calculated using the extension of the Gursey–Radicati mass formula and the effective mass scheme. Also, we calculated the magnetic moments of the hidden-charm pentaquarks using the effective mass and shielded charge technique. Further, we suggested the possible production modes for J ^P = 5/2⁻ pentaquarks from the decay of bottom baryons, which consist of pentaquark states as intermediate states. Our results for masses demonstrate reasonable agreement with the available data and our analysis for both masses and magnetic moments may be useful for future experimental studies.

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隐蔽五夸克的光谱分析

在这项工作中，我们利用多夸克方法来分析隐粲五夸克态的光谱学，其动机是最近在大型强子对撞机（LHCb）合作中的发现。利用苏（3）味道表示法，JP = 5/2- 的五夸克被排列成 10 个（decuplet）苏（3）味道多重子。五夸克的质量是利用古尔赛-拉迪卡提质量公式的扩展和有效质量方案计算出来的。同时，我们还利用有效质量和屏蔽电荷技术计算了隐粲五夸克的磁矩。此外，我们还提出了 JP = 5/2- 五夸克在底重子衰变中的可能产生模式，其中包括作为中间态的五夸克态。我们对质量的分析结果与现有数据显示出合理的一致性，我们对质量和磁矩的分析可能对未来的实验研究有用。

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

Journal of Physics G: Nuclear and Particle Physics 物理-物理：核物理

CiteScore

7.60

自引率

5.70%

发文量

105

审稿时长

1 months

期刊介绍： Journal of Physics G: Nuclear and Particle Physics (JPhysG) publishes articles on theoretical and experimental topics in all areas of nuclear and particle physics, including nuclear and particle astrophysics. The journal welcomes submissions from any interface area between these fields. All aspects of fundamental nuclear physics research, including: nuclear forces and few-body systems; nuclear structure and nuclear reactions; rare decays and fundamental symmetries; hadronic physics, lattice QCD; heavy-ion physics; hot and dense matter, QCD phase diagram. All aspects of elementary particle physics research, including: high-energy particle physics; neutrino physics; phenomenology and theory; beyond standard model physics; electroweak interactions; fundamental symmetries. All aspects of nuclear and particle astrophysics including: nuclear physics of stars and stellar explosions; nucleosynthesis; nuclear equation of state; astrophysical neutrino physics; cosmic rays; dark matter. JPhysG publishes a variety of article types for the community. As well as high-quality research papers, this includes our prestigious topical review series, focus issues, and the rapid publication of letters.