Radii of Exotic Hadrons and On Some Properties of the Exotic Particles

IF 1.2 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Few-Body Systems Pub Date : 2026-09-17 DOI:10.1007/s00601-026-02082-3

Aparajita Bhattacharya, Shukla Pal, Papiya Dhara, Ballari Chakrabarti

引用次数: 0

Abstract

The radii of the exotic hadrons like tetraquarks and pentaquarks are studied considering diquark-anti diquark configuration of tetraquarks and diquark-diquark-antiquark picture of pentaquarks. Diquarks are described as composite fermions. Binding energies are calculated using the ground state masses of the tetraquarks and pentaquarks, as estimated within the framework of the Flux Tube model. The leptonic decay widths for tetra quarks are studied using van-Royen Weisskoff formula. The decay widths are found to be small, ranging from \(10^{-3}\) to \(10^{-7}\) MeV, as expected from experimental results. The form factors of pentaquarks have been studied with the computed radii for different ranges of momentum transfer. The study is important for understanding the properties of newly discovered exotic particles.

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外来强子的半径和外来粒子的一些性质

考虑四夸克的二夸克-反二夸克构型和五夸克的二夸克-二夸克-反夸克图象，研究了四夸克和五夸克等外来强子的半径。双夸克被描述为复合费米子。结合能是用四夸克和五夸克的基态质量来计算的，在通量管模型的框架内估计。利用van-Royen Weisskoff公式研究了四夸克的轻子衰变宽度。发现衰变宽度很小，范围从\(10^{-3}\)到\(10^{-7}\)兆电子伏，与实验结果的预期一致。用计算得到的半径对五夸克在不同动量传递范围内的形状因子进行了研究。这项研究对于理解新发现的奇异粒子的性质具有重要意义。

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

Few-Body Systems 物理-物理：综合

CiteScore

2.90

自引率

18.80%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Few-Body Systems presents original research work – experimental, theoretical and computational – investigating the behavior of any classical or quantum system consisting of a small number of well-defined constituent structures. The focus is on the research methods, properties, and results characteristic of few-body systems. Examples of few-body systems range from few-quark states, light nuclear and hadronic systems; few-electron atomic systems and small molecules; and specific systems in condensed matter and surface physics (such as quantum dots and highly correlated trapped systems), up to and including large-scale celestial structures. Systems for which an equivalent one-body description is available or can be designed, and large systems for which specific many-body methods are needed are outside the scope of the journal. The journal is devoted to the publication of all aspects of few-body systems research and applications. While concentrating on few-body systems well-suited to rigorous solutions, the journal also encourages interdisciplinary contributions that foster common approaches and insights, introduce and benchmark the use of novel tools (e.g. machine learning) and develop relevant applications (e.g. few-body aspects in quantum technologies).