Baryons in the light-front approach: The three-quark picture
| Autor: | Zhao, Zhen-Xing, Zhang, Fu-Wei, Hu, Xiao-Hui, Shi, Yu-Ji |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Physical Review |
| Popis: | In this work, a three-quark picture is constructed using a bottom-up approach for baryons in light-front quark model. The shape parameters, which characterize the momentum distribution inside a baryon, are determined with the help of the pole residue of the baryon. The relation between the three-quark picture and the diquark picture is clarified. In model construction, we find that Lorentz boost effect plays an important role, and the bottom-up modeling approach can be generalized to multiquark states. Based on this, a unified theoretical framework for describing multiquark states may be established. As a by-product of model construction, we can easily obtain a new and possibly better definition of baryon interpolating current. The hadron interpolating currents are the starting point of Lattice QCD and QCD sum rules, and therefore have important significance. Comment: 17 pages |
| Databáze: | OpenAIRE |
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