The Babar Collaboration announced two new excited charmed baryons c（3055）^＋ and c（3123）^＋. We study their strong decays assuming they are D-wave states. Some assignments are excluded by comparing our numerical...The Babar Collaboration announced two new excited charmed baryons c（3055）^＋ and c（3123）^＋. We study their strong decays assuming they are D-wave states. Some assignments are excluded by comparing our numerical results with the experimental values of the total widths of c（3055）^＋ and c（3123）^＋. We also suggest some possible decay modes, which will be helpful to determine the properties of c（3055）^＋ and c（3123）^＋.展开更多
Mixing between the 2^3S1 and 1^3D1Ds is studied within the 3P0 model. If mixing between these two 1 states exists, Ds1^＊ （2700） ± and DsJ^＊（2860）± could be interpreted as the two orthogonal mixed state...Mixing between the 2^3S1 and 1^3D1Ds is studied within the 3P0 model. If mixing between these two 1 states exists, Ds1^＊ （2700） ± and DsJ^＊（2860）± could be interpreted as the two orthogonal mixed states with mixing angle θ ≈-80 °in the case of a special β for each meson. However, in the case of a universal β for all mesons, D_（s1）~＊（2700） ± could be interpreted as the mixed state of 23S1 and 13D1 with mixing angle 12° θ 21° but D_（sJ）~＊（2860）± seems difficult to interpret as the orthogonal partner of D（s1）~＊（2700）±.展开更多
基金National Natural Science Foundation of China(10421503,10625521,10705001)China Postdoctoral Science Foundation(20060400376)
文摘The Babar Collaboration announced two new excited charmed baryons c（3055）^＋ and c（3123）^＋. We study their strong decays assuming they are D-wave states. Some assignments are excluded by comparing our numerical results with the experimental values of the total widths of c（3055）^＋ and c（3123）^＋. We also suggest some possible decay modes, which will be helpful to determine the properties of c（3055）^＋ and c（3123）^＋.
基金Supported by National Natural Science Foundation of China(11075102)
文摘Mixing between the 2^3S1 and 1^3D1Ds is studied within the 3P0 model. If mixing between these two 1 states exists, Ds1^＊ （2700） ± and DsJ^＊（2860）± could be interpreted as the two orthogonal mixed states with mixing angle θ ≈-80 °in the case of a special β for each meson. However, in the case of a universal β for all mesons, D_（s1）~＊（2700） ± could be interpreted as the mixed state of 23S1 and 13D1 with mixing angle 12° θ 21° but D_（sJ）~＊（2860）± seems difficult to interpret as the orthogonal partner of D（s1）~＊（2700）±.
