The Ξ~* K and ?η Interaction Within a Chiral Unitary Approach  

作　　者：徐思琦 谢聚军 陈旭荣 贾多杰 

机构地区：[1]College of Physics and Electronic Engineering, Northwest Normal University, Lanzhou 730070, China [2]Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China [3]State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China

出　　处：《Communications in Theoretical Physics》2016年第1期53-56,共4页理论物理通讯（英文版）

基　　金：Supported by the National Basic Research Program(973 Program Grant No.2014CB845406);the National Natural Science Foundation of China under Grant Nos.11475227,11265014;the Open Project Program of State Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,China No.Y5KF151CJ1

摘　　要：In this work we study the interaction of the coupled channels ?η and Ξ* ˉK within the chiral unitary approach.The systems under consideration have total isospins 0,strangeness S =-3,and spin 3/2.We study the s wave interaction which implies that the possible resonances generated in the system can have spin-parity JP= 3/2-.The unitary amplitudes in coupled channels develop poles that can be associated with some known baryonic resonances.We find there is a dynamically generated 3/2-? state with mass around 1800 Me V,which is in agreement with the predictions of the five-quark model.

关 键 词：chiral unitary approach Ω excited states 

分 类 号：O572.33[理学—粒子物理与原子核物理]