Identification of Y(4008),Y(4140),Y(4260),and Y(4360) as Tetraquark States  

作　　者：周平 邓成荣 平加伦 

机构地区：[1]Department of Physics, Chongqing Jiaotong University, Chongqing 400074 [2]Department of Physics, Nanjing Normal University, Nanjing 210097

出　　处：《Chinese Physics Letters》2015年第10期30-33,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 11305274,11175088 and 11035006;the Chongqing Natural Science Foundation under Grant No cstc2013jcyjA00014

摘　　要：Within the framework of a color flux-tube model with a four-body confinement potential, the tetraquark states [cq][Oc]] （q =u or d） with IJPc = 01-- are systematically investigated. The numerical results indicate that states Y（4008）, Y（4140）, Y（4260）, and Y（4360） can be uniformly described as tetraquark states [cq][0c]] with n2S＋1La of 11P1, 15P1, 25P1 and 15F1, respectively, in the color flux-tube model. They are compact three- dimensional spatial configurations similar to a rugby ball, higher orbital angular momentum L, more prolate. The four-body confinement interaction based on a color flux-tube picture should be responsible for the formation of those compact tetraquark states.Within the framework of a color flux-tube model with a four-body confinement potential, the tetraquark states [cq][Oc]] （q =u or d） with IJPc = 01-- are systematically investigated. The numerical results indicate that states Y（4008）, Y（4140）, Y（4260）, and Y（4360） can be uniformly described as tetraquark states [cq][0c]] with n2S＋1La of 11P1, 15P1, 25P1 and 15F1, respectively, in the color flux-tube model. They are compact three- dimensional spatial configurations similar to a rugby ball, higher orbital angular momentum L, more prolate. The four-body confinement interaction based on a color flux-tube picture should be responsible for the formation of those compact tetraquark states.

关 键 词：Identification of Y and Y 

分 类 号：O572.33[理学—粒子物理与原子核物理]