Relativistic Description of Tetraquarks with Two Heavy Quarks

IF 0.5 Q4 PHYSICS, PARTICLES & FIELDS

Physics of Particles and Nuclei Letters Pub Date : 2026-09-22 DOI:10.1134/S1547477126700263

V. O. Galkin, E. M. Savchenko

引用次数: 0

Abstract

Masses of tetraquarks with two heavy quarks (\(QQ{\kern 1pt} '\bar {q}\bar {q}{\kern 1pt} '\)) are calculated within the relativistic quark model, based on the quasipotential approach in QCD and diquark–antidiquark picture of tetraquarks. The relativistic quasipotential equation takes into account all spin–dependent and spin–independent relativistic corrections and the internal structure of the diquarks. The calculated masses of such tetraquarks are compared with the strong fall–apart decay thresholds into a pair of mesons. The states that could be observed as narrow resonances in other decay modes are determined.

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具有两个重夸克的四夸克的相对论性描述

基于QCD中的准势方法和四夸克的重夸克-反重夸克图像，在相对论夸克模型中计算了具有两个重夸克的四夸克的质量（\(QQ{\kern 1pt} '\bar {q}\bar {q}{\kern 1pt} '\)）。相对论性准势方程考虑了所有依赖自旋和不依赖自旋的相对论性修正以及重夸克的内部结构。这种四夸克的计算质量与强分解衰变阈值进行了比较，形成一对介子。确定了在其他衰变模式中可以观察到的窄共振态。

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

Physics of Particles and Nuclei Letters PHYSICS, PARTICLES & FIELDS-

CiteScore

0.80

自引率

20.00%

发文量

108

期刊介绍： The journal Physics of Particles and Nuclei Letters, brief name Particles and Nuclei Letters, publishes the articles with results of the original theoretical, experimental, scientific-technical, methodological and applied research. Subject matter of articles covers: theoretical physics, elementary particle physics, relativistic nuclear physics, nuclear physics and related problems in other branches of physics, neutron physics, condensed matter physics, physics and engineering at low temperatures, physics and engineering of accelerators, physical experimental instruments and methods, physical computation experiments, applied research in these branches of physics and radiology, ecology and nuclear medicine.