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Spectrum of Hadrons with Strangeness

机译:强子的光谱

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We describe a calculation of the spectrum of strange and nonstrange hadrons that simultaneously correlates the dressed-quark-core masses of meson and baryon ground- and excited-states within a single framework. The foundation for this analysis is a symmetry-preserving Dyson–Schwinger equation treatment of a vector×vector contact interaction. Our results exemplify and highlight the deep impact of dynamical chiral symmetry breaking on the hadron spectrum: an accurate description of the meson spectrum entails a similarly successful prediction of the spectrum of baryons, including those with strangeness. The analysis also provides numerous insights into baryon structure. For example, that baryon structure is largely flavour-blind, the first radial excitation of ground-state baryons is constituted almost entirely from axial-vector diquark correlations, and DCSB is the foundation for the ordering of low-lying baryon levels; viz., (1/2)+, (1/2)+, (1/2)−.
机译:我们描述了一个奇异和非奇异的强子光谱的计算,该光谱同时在一个框架内关联介子和重子的基态和激发态的夸克核核心质量。此分析的基础是矢量×矢量接触相互作用的对称性戴森-施温格方程处理。我们的结果例证并突出了动态手性对称性对强子光谱的深远影响:对介子光谱的准确描述需要对重子(包括具有奇异位子的重子)进行相似的成功预测。该分析还提供了有关重子结构的众多见解。例如,重子结构主要是味觉盲的,基态重子的第一个径向激发几乎完全由轴向矢量狄夸克相关性构成,DCSB是低空重子水平有序的基础。即(1/2) + ,(1/2) + ,(1/2)-

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