Analytical Determination of Mass and Magnetic Moment of Baryons in Diquark Model

IF 1.7 4区物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY

Few-Body Systems Pub Date : 2023-08-22 DOI:10.1007/s00601-023-01854-5

Mansour Farhadi, S. Mohammad Moosavi Nejad, A. Armat

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Abstract

So far, many constituent quark models have been applied to describe the internal configuration of light and heavy baryons and also for determining their static properties Among all static quantities, the mass and the magnetic moment of baryons are the most interesting observables which provide direct information on the dynamics of strong interaction and color confinement phenomenon. In this work, through the quark–diquark model we analytically compute the mass and the magnetic moment of light and heavy baryons in their ground state. To this aim, we use the Bethe–Salpeter equation in the presence of Hellmann potential with the onepionexchange contribution to determine the mass and the wave function of baryons. Using the spin-flavor structure of constituent quarks we calculate the magnetic moment of light, single and double heavy baryons and compare them with existing data and other modeldependent predictions. We will also predict the mass and the magnetic moment of unobserved triply heavy baryons relevant for the present and future high energy colliders.

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二夸克模型中重子质量和磁矩的解析测定

到目前为止，许多组成夸克模型已经被应用于描述轻重子和重重子的内部构型和确定它们的静态性质。在所有静态量中，重子的质量和磁矩是最有趣的可观测值，它们提供了强相互作用和色约束现象动力学的直接信息。本文通过夸克-双夸克模型，解析计算了轻重子和重重子在基态下的质量和磁矩。为此，我们利用helmann势存在时的Bethe-Salpeter方程和单键交换贡献来确定重子的质量和波函数。利用组成夸克的自旋风味结构，我们计算了轻重子、单重子和双重子的磁矩，并将它们与现有数据和其他依赖模型的预测进行了比较。我们还将预测与当前和未来高能对撞机相关的未观测到的三重重子的质量和磁矩。

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).