Analysis of X（1576） as a Tetraquark State with the QCD Sum Rules  

作　　者：王志刚 完绍龙 

机构地区：[1]Department of Physics, North China Electric Power University, Baoding 071003 [2]Department of Modern Physics, University of Science and Technology of China, Hefei 230026

出　　处：《Chinese Physics Letters》2006年第12期3208-3210,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation under Grant No 10405009, and the Key Program Foundation of North China Electric Power University.

摘　　要：We take the viewpoint that X（1576） is the tetraquark state which consists of a scalar diquark and an antiscalar-diquark in relative P-wave, and calculate its mass in the framework of the QCD sum rule approach. The numerical value of the mass mx= （1.66 =k 0.14） GeV is consistent with the experimental data. There might be some tetraquark components in the vector meson X（1576）.We take the viewpoint that X（1576） is the tetraquark state which consists of a scalar diquark and an antiscalar-diquark in relative P-wave, and calculate its mass in the framework of the QCD sum rule approach. The numerical value of the mass mx= （1.66 =k 0.14） GeV is consistent with the experimental data. There might be some tetraquark components in the vector meson X（1576）.

关 键 词：4-QUARK STATES RESONANCE PHYSICS SCALAR MESONS QUARK-MODEL INSTANTONS MASSES 

分 类 号：P142.7[天文地球—天体物理]