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Manifestation of color confinement in the YY Model for Atomic Nuclei

Journal of Modern Physics 2020年第12期11卷 1999-2010页

作者： Hongguang Yang Weidong Yang Munich Germany

In this paper, a manifestation of the well-known color confinement from the QCD (quantum chromodynamics) in the newly developed YY model for the atomic nucleus is presented. There is a wonderful correspondence between the structural requirements from the YY model and some elementary properties of the color dynamics from QCD. The open questions in the YY model, namely the holding forces for triple nodes and for pairing space links, are exactly covered by the three-color compensation or by the paired color anti-color balance. We will see what colors and anti-colors do mean in the YY model, how up quarks and down quarks get assigned a color or anti-color. We will discover some relationships between gluon-based interactions as described in the standard model and pairing space links in the YY model.

关键词： Quantum Chromodynamics QCD color confinement YY Model for Atomic Nucleus Pairing Space Link PSL Triple Space Link TSL colored up Quark colored Down Quark colored Hydrogen Nucleus colored Helium Nucleus colored Helium Isotope Nucleus color confinement Aggregate State CCAS color-Balanced PSL Tumbling of colored PSLs

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Quark model study of multiquark states

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Chinese Physics C 2009年第12期33卷 1285-1290页

作者：平加伦邓成荣黄虹霞王凡 Physics Department Nanjing Normal University School of Mathematics and Physics Chongqing Jiaotong University Joint Center for Particle Nuclear Physics and Cosmology Nanjing University and Purple Mountain Observatory Chinese Academy of Sciences

The six- and four-quark systems are studied in emphasized that the color confinement used in multiquark the framework of constituent quark models. It is system should be different from the one used in two- or three-quark system. For six-quark system, we look for △△ and △△ dibaryon resonances by calculating NN scattering phase shifts with explicit coupling to these dibaryon channels in quark delocalization and color screening model. The model gives a good description of low-energy NN properties and predicts IJP = 03＋ and 01＋ △△resonances, which can be promising candidates for the isoscalar ABC structure reported by the CELSIUS-WASA Collaboration. For tetraquark system, a flux-tube quark model with multi-body confinement interaction is employed to study Y（2175） as a tetraquark state. The Y（2175） with diquark-antidiquark structure has energy 2174 MeV which is very consistent with experimental data. The calculation shows that multi-body confinement potential may play a vital role in the multiquark system.

关键词： quark model dibaryon tetraquark color confinement multibody interaction

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Quantum numbers of the pentaquark states Pc+ via symmetry analysis

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Communications in Theoretical Physics 2020年第12期72卷 145-151页

作者： Chong-yao Chen Muyang Chen Yu-Xin Liu Department of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Center for High Energy Physics Peking UniversityBeijing 100871China Department of Physics Hunan Normal UniversityChangsha 410081China

We investigate the quantum numbers of the pentaquark states Pc+,which are composed of 4(three flavors)quarks and an antiquark,by analyzing their inherent nodal structure in this *** that the four quarks form a tetrahedron or a square,and the antiquark is at the ground state,we determine the nodeless structure of the states with orbital angular moment L≤3,and in turn,the accessible low-lying *** the inherent nodal structure depends only on the inherent geometric symmetry,we propose the quantum numbers JPof the low-lying pentaquark states P_c^+may be■,■,■and■,independent of dynamical models.

关键词： pentaquark states exotic hadrons color confinement symmetry analysis

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