QCD Sum Rule Study of π1S States

摘要：

We study the states π1 (1600) and π1 (2015) in the QCD sum rule.We classify the tetraquark currents of the quantum numbers IGJPC=1-1-+,and find that the flavor structure (3 (×) -6)(+) (6(×)3) is preferred when using a diquark-antidiquark construction.By using both the SVZ and finite energy sum rules,we obtain a mass around 1.6 and 2.0 GeV,for the states with the quark contents qqqq and qsqs,respectively.We also study their decay patterns.

关键词： ezotic mesons tetraquark QCD sum rule

作者: CHEN Hua-xing A.Hosaka ZHU Shi-lin

作者单位: Department of Physics,Peking University,Beijing 100871,China;Research Center for Nuclear Physics,Osa Research Center for Nuclear Physics,Osaka University,Ibaraki 567-0047,Japan Department of Physics,Peking University,Beijing 100871,China

会议类型: 国际会议

会议名称: 3rd China-Japan-Korea Hadron and Nuclear Physics 2008 Symposium(第三届中日韩强子物理与核物理研讨会)

会议地点: 兰州

会议语种:英文

页码: 129-132

在线出版日期: 2008-06-23（万方平台首次上网日期，不代表论文的发表时间）