由D1D1、D1D2和D2D2*组成的类氢分子

IF 5.3 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-05-27 DOI:10.1103/physrevd.111.094038

Hu-Hua He, Mao-Jun Yan, Chun-Sheng An, Cheng-Rong Deng

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引用次数: 0

摘要

我们系统地探索了夸克模型中具有不同ISL构型的s波D1D1、D1D2*和D2*D2*态。我们提出了9个具有ISL构型的稳定量子态，ISL=001、010、012、100、102、110、112、120和122，它们被解离成它们的组成介子。这些结合态是类氢分子态，其中两个亚簇适度重叠，并且由于轻夸克的离域而形成QCD共价键。在I=1的结合状态下，QCD共价键是主要的结合机制。然而，π介子和σ介子的交换在I=0的束缚态中起关键作用。耦合通道效应在ISL=001, 010, 012, 100和102的束缚态的形成中是必不可少的。2025年由美国物理学会出版

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Hydrogenlike molecules composed of D1D1 , D1D2* , and D2*D2*

We systematically explore the S-wave D1D1, D1D2* and D2*D2* states with various isospin-spin-orbit (ISL) configurations in the quark model. We propose nine stable dimeson states with the ISL configurations, ISL=001, 010, 012, 100, 102, 110, 112, 120, and 122, against dissociation into their constituent mesons. Those bound states are hydrogenlike molecular states, where the two subclusters are moderately overlapped and the QCD covalent bond is formed due to the delocalization of light quarks. The QCD covalent bond serves as the primary binding mechanism in the bound states with I=1. However, the exchange of π and σ mesons plays a pivotal role in the bound states with I=0. The coupled-channel effect is essential in the formation of the bound states with ISL=001, 010, 012, 100, and 102.

Published by the American Physical Society

2025

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.