组分夸克模型下研究pΛ体系  

Study of pΛ Systems in Constituent Quark Models

作　　者：陆旭[1] 黄虹霞[2] 

机构地区：[1]江苏联合职业技术学院镇江分院,江苏镇江212016 [2]南京师范大学物理科学与技术学院,江苏南京210097

出　　处：《南京师大学报（自然科学版）》2014年第4期66-70,共5页Journal of Nanjing Normal University(Natural Science Edition)

基　　金：国家自然科学基金(11205091)

摘　　要：本文在手征夸克模型和夸克蜕定域色屏蔽模型框架下,利用共振群方法研究了角动量J=0和J=1的pΛ体系,发现在这两个模型中pΛ都不是一个束缚态,但在夸克蜕定域色屏蔽模型中,我们在pΛ散射过程中发现了一个IJ=120的pΣ共振态.The pΛ systems with J=0 and J=1 are dynamically investigated within the framework of two constituent quark models：the chiral quark model and the quark delocalization color screening model. The results show that,there is no pΛbound state in both two models. However,the pΛ elastic scattering processes with coupling to pΣstate are studied and a IJ= 12 0 pΣresonance state is given in the quark delocalization color screening model.

关 键 词：pΛ体系 pΣ共振态 束缚态 散射相移 

分 类 号：O572.33[理学—粒子物理与原子核物理]