The unobserved J^P= 0^-radial excitation Ds（2^1S0） is anticipated to have mass 2650 Me V（denoted as Ds（2650））. Study of hadronic production is an important way to identify highly excited states. We study hadroni...The unobserved J^P= 0^-radial excitation Ds（2^1S0） is anticipated to have mass 2650 Me V（denoted as Ds（2650））. Study of hadronic production is an important way to identify highly excited states. We study hadronic production of Ds（2650） from higher excited resonances in a3P0 model. Relevant hadronic partial decay widths are found to be very small, which implies it is difficult to observe Ds（2650） in hadronic decays of higher excited resonances. Hadronic decay widths of radially excited Ds（3P） have also been estimated. The total decay widths of four Ds（3P） are large, but the branching ratios in the Ds（2650）η channel are very small, which implies that it seems impossible to observe Ds（2650） in hadronic decays of Ds（3P）. The dominant decay channels of the four Ds（3P） have been pointed out, and D1（2420）, D1（2430）, D＊2（2460）, D（2550）, D（2600）,（1-1D2）D（2750） and D3^（2760） are possible to observe in hadronic production from Ds（3P）.展开更多
基金Supported by National Natural Science Foundation of China(11475111)
文摘The unobserved J^P= 0^-radial excitation Ds（2^1S0） is anticipated to have mass 2650 Me V（denoted as Ds（2650））. Study of hadronic production is an important way to identify highly excited states. We study hadronic production of Ds（2650） from higher excited resonances in a3P0 model. Relevant hadronic partial decay widths are found to be very small, which implies it is difficult to observe Ds（2650） in hadronic decays of higher excited resonances. Hadronic decay widths of radially excited Ds（3P） have also been estimated. The total decay widths of four Ds（3P） are large, but the branching ratios in the Ds（2650）η channel are very small, which implies that it seems impossible to observe Ds（2650） in hadronic decays of Ds（3P）. The dominant decay channels of the four Ds（3P） have been pointed out, and D1（2420）, D1（2430）, D＊2（2460）, D（2550）, D（2600）,（1-1D2）D（2750） and D3^（2760） are possible to observe in hadronic production from Ds（3P）.
