Chiral Lagrangian Treatment of 0^＋＋ Mesons and 0^＋＋ Glueballs  

作　　者：夏政通 王顺金 

机构地区：[1]Department of Physics, Sichuan University, Chengdu 610064

出　　处：《Chinese Physics Letters》2007年第3期648-651,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grants Nos 10375039 and 90503008, the Doctoral Programme of the Education Ministry of China, and the Research Fund of the Nuclear Theory Center of HIRFL of China.

摘　　要：Within the framework of a nonlinear chiral Lagrangian the mass spectra and the decay properties of 0^＋＋ states below 2 GeV are studied. Assuming that f0（980）, a0（980）, K0（1430）, and f0（1500） comprise an SU（3） nonet, we make a detailed prediction about the static properties of the 0^＋＋ mesons. The substructure analysis of these states in terms of two- and four-quark components as well as a glueball component is carried out. We also consider the interaction Lagrangian and provide a preliminary study of the strong and radiative decays of the 0＋＋ mesons. The scalar glueball masses and partial widths are also presented. In view of the fact that few data of 0＋＋ mesons are clearly given in the present PDG （Particle Data Group） list and that the four-quark content of mesons is a hot issue both experimentally and theoretically, the predicted results of the paper may be helpful for upcoming experimental and theoretical studies of these mesons.Within the framework of a nonlinear chiral Lagrangian the mass spectra and the decay properties of 0^＋＋ states below 2 GeV are studied. Assuming that f0（980）, a0（980）, K0（1430）, and f0（1500） comprise an SU（3） nonet, we make a detailed prediction about the static properties of the 0^＋＋ mesons. The substructure analysis of these states in terms of two- and four-quark components as well as a glueball component is carried out. We also consider the interaction Lagrangian and provide a preliminary study of the strong and radiative decays of the 0＋＋ mesons. The scalar glueball masses and partial widths are also presented. In view of the fact that few data of 0＋＋ mesons are clearly given in the present PDG （Particle Data Group） list and that the four-quark content of mesons is a hot issue both experimentally and theoretically, the predicted results of the paper may be helpful for upcoming experimental and theoretical studies of these mesons.

关 键 词：SCALAR MESONS PP INTERACTIONS 450 GEV/C DECAYS MASS 

分 类 号：O572.3[理学—粒子物理与原子核物理]