X(3872) and Bound State Problem of D^0*~0(~0 D*~0)  

作　　者：LIU Yan-rui1,LIU Xiang2,3,DENG Wei-zhen2 (1 Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China 2 Department of Physics,Peking University,Beijing 100871,China 3 Centro de Física Terica,Departamento de Física,Universidade de Coimbra,P-3004-516,Coimbra,Portugal) 

出　　处：《原子核物理评论》2009年第S1期16-21,共6页Nuclear Physics Review

基　　金：National Natural Science Foundation of China(10625521, 10675008, 10705001, 10775146, 10721063);China Postdoctoral Science Foundation(20070420526);K.C. Wong Education Foundation, Hong Kong

摘　　要：We have performed a dynamical calculation of the bound state problem of D0D*0 by considering the pion and sigma meson exchange potential. Our preliminary analysis disfavors the molecular interpretation of X(3872) if we use the experimental D*Dπ coupling constant g=0.59 and a reasonable cutoff around 1 GeV,which is the typical hadronic scale. In contrast,there probably exists a loosely bound S-wave BB* molecular state. Such a molecular state would be rather stable since its dominant decay mode is the radiative decay through B*→Bγ.We have performed a dynamical calculation of the bound state problem of D0D*0 by considering the pion and sigma meson exchange potential. Our preliminary analysis disfavors the molecular interpretation of X(3872) if we use the experimental D*Dπ coupling constant g=0.59 and a reasonable cutoff around 1 GeV,which is the typical hadronic scale. In contrast,there probably exists a loosely bound S-wave BB* molecular state. Such a molecular state would be rather stable since its dominant decay mode is the radiative decay through B*→Bγ.

关 键 词：X(3872) BOUND STATE MOLECULE 

分 类 号：O572.33[理学—粒子物理与原子核物理]