QCD Sum Rules Study of X(4350)  

作　　者：莫增 崔春雨 刘永录 黄明球 

机构地区：[1]Department of Physics,School of Biomedical Engineering,Third Military Medical University [2]College of Science,National University of Defense Technology

出　　处：《Communications in Theoretical Physics》2014年第4期501-505,共5页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos.11347174,11275268,11105222,and 11025242

摘　　要：The QCD sum rule approach is used to analyze the nature of the recently observed new resonance X （4350）, which is assumed to be a diquark-antidiquark state [cs][cs] with jPC = 1-＋. The interpolating current representing this state is proposed. In the calculation, contributions of operators up to dimension six are included in the operator product expansion （OPE）, as well as terms which are linear in the strange quark mass ms. We find ml-＋ = （4.82 ~ 0.19） GeV, which is not compatible with the X（4350） structure as a 1-＋ tetraquark state. Finally, we also discuss the difference of a four-quark state＇s mass whether the state＇s interpolating current has a definite charge conjugation.

关 键 词：X（4350） exotic-charmonium 

分 类 号：O413.2[理学—理论物理]