Baryons in the light-front approach: The three-quark picture

Autor:	Zhao, Zhen-Xing, Zhang, Fu-Wei, Hu, Xiao-Hui, Shi, Yu-Ji
Rok vydání:	2023
Předmět:	High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.107.116025
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. When building the model, we find that Lorentz boost plays a crucial 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 newly improved definition of baryon interpolating current. The hadron interpolating currents are the starting point of Lattice QCD and QCD sum rules, and therefore are of great importance. Comment: 13 pages; version accepted by PRD
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2304.07698 Zobrazit plný text záznamu View this record from Arxiv