Valence and sea quark mixing in meson states

Valence and sea quark mixing in meson states 1 first-author 1 2 1 1 3 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800 CCAST (World Laboratory, P.O.Box 8730, Beijing 100080 CCAST (World Laboratory, P.O.Box 8730, Beijing 100080 Center for Theoretical Physics, Nanjing University, Nanjing 210008 Center for Theoretical Physics, Nanjing University, Nanjing 210008 A meson model with q <math><mover accent="true"><mi>q</mi><mo>¯</mo></mover></math> and ( q <math><mover accent="true"><mi>q</mi><mo>¯</mo></mover></math> ) 2 mixing has been developed. The 0 - meson state has been studied within this model space. Considerable q <math><mover accent="true"><mi>q</mi><mo>¯</mo></mover></math> and ( q <math><mover accent="true"><mi>q</mi><mo>¯</mo></mover></math> ) 2 mixing has been found. The first excited state is in the energy range ~1.5 GeV. This state may be relevant to the new discovered exotic meson states. Meson states Meson model QCD Exotic quark References Isgur N . In: Vautherm D et al eds. Hadrons and hadronic matter . New York : Plenum Press , 1990 ; 21 Hadrons and hadronic matter Laudsberg L G . Sov Phys Uspekhi , 1990 ; 33 : 169 . Sov Phys Uspekhi Burnett T H , Sharpe S R . Ann Rev Nucl Part Sci , 1990 ; 40 : 327 Ann Rev Nucl Part Sci Barnes T . In: Baryons 95, 7th International Conference in the Structure of Baryons , Oct. 3-7 1995 ; Sunta-Fe Chung S U . In: Baryons 95, 7th International Conference in the Structure of Baryons , Oct. 3-7 1995 . Sunta-Fe Klempt E . In: Baryons 95, 7th International Conference in the Structure of Baryons , Oct. 3-7 1995 . Sunta-Fe Godfrey S , Isgur N . Phys Rev , 1985 ; D32 : 189 Phys Rev Yu You-Wen , Zhang Zong-Ye . Nucl Phys , 1984 ; A426 : 557 Nucl Phys Wang Fan , Wu Guang-Han , Teng Li-Jian et al . Phys Rev Lett , 1992 ; 69 : 2901 Phys Rev Lett Su W N , Qing D , Wang F , et al . Los Alamos preprint LA-UR-96-94 Los Alamos preprint LA-UR-96-94 The Project Supported in part by National Natural Science Foundation of China 1996-10-02 1997-05-01 2021-02-05 1997 Nuclear Science and Techniques 2 08