Study of radially excited D_s（2¹S₀） and D_s（3P ）

【摘要】 The unobserved J^P= 0^-radial excitation D_s（2¹S₀） is anticipated to have mass 2650 Me V（denoted as D_s（2650））. Study of hadronic production is an important way to identify highly excited states. We study hadronic production of D_s（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 D_s（2650） in hadronic decays of higher excited resonances. Hadronic decay widths of radially excited D_s（3P） have also been estimated. The total decay widths of four D_s（3P） are large, but the branching ratios in the D_s（2650）η channel are very small, which implies that it seems impossible to observe D_s（2650） in hadronic decays of D_s（3P）. The dominant decay channels of the four D_s（3P） have been pointed out, and D₁（2420）, D₁（2430）, D*2（2460）, D（2550）, D（2600）,（1¹D₂）D（2750） and D₃*（2760） are possible to observe in hadronic production from D_s（3P）.更多还原

【Abstract】 The unobserved J^P= 0^-radial excitation D_s（2¹S₀） is anticipated to have mass 2650 Me V（denoted as D_s（2650））. Study of hadronic production is an important way to identify highly excited states. We study hadronic production of D_s（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 D_s（2650） in hadronic decays of higher excited resonances. Hadronic decay widths of radially excited D_s（3P） have also been estimated. The total decay widths of four D_s（3P） are large, but the branching ratios in the D_s（2650）η channel are very small, which implies that it seems impossible to observe D_s（2650） in hadronic decays of D_s（3P）. The dominant decay channels of the four D_s（3P） have been pointed out, and D₁（2420）, D₁（2430）, D*2（2460）, D（2550）, D（2600）,（1¹D₂）D（2750） and D₃*（2760） are possible to observe in hadronic production from D_s（3P）.更多还原