Upperion（5S）反应与B-Bbar反应的衰变率比
Decay Rate Ratios of Upsilon(5S) to B Bbar Reactions
摘要：
利用包含Upperdom（5S）态波函数的衰变振幅，计算了OZI允许的Upperdom（5S）到两个B介子的衰变率比.我们得到了Upperdum（5S）衰变对Bs* Bs*bar的分支比远大于对Bs Bs*bar或Bsbar Bs* 的分支比，这与CLEO和BELLE最近的实验结果很好地一致.这与实验结果的一致性是可能的，因为上升（5S）径向波函数的节点诱导衰减振幅的节点。我们发现，Upperdom（5S）衰变到Bu（*）Bu（*）棒或Bd（*）Bd（*）棒对的结果依赖于重夸克间势的参数值.
英文摘要：
We calculate the decay rate ratios for OZI allowed decays of Upsilon(5S) to two B mesons by using the decay amplitudes which incorporate the wave function of the Upsilon(5S) state. We obtain the results that the branching ratio of the Upsilon(5S) decay to Bs* Bs*bar is much larger than the branching ratio to Bs Bs*bar or Bsbar Bs*, in good agreement with recent experimental results of CLEO and BELLE. This agreement with the experimental results is made possible since the nodes of the Upsilon(5S) radial wave function induce the nodes of the decay amplitude. We find that the results for the Upsilon(5S) decays to Bu(*) Bu(*)bar or Bd(*) Bd(*)bar pairs are dependent on the parameter values used for the potential between heavy quarks.
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