| Non—spectator Diquark Effiects on Lifetimes of Λb,Ωb（＊） and Weak Decay Rates of ∑bΞb（＊） |
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| 引用本文： | DAIWu－Sheng GUOXin－Heng 等.Non—spectator Diquark Effiects on Lifetimes of Λb,Ωb（＊） and Weak Decay Rates of ∑bΞb（＊）[J].理论物理通讯,2001,35(1):50-56. |
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| 作者姓名： | DAIWu－Sheng GUOXin－Heng |
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| 作者单位： | [1]CCAST（WorldLaboratory）,P.O.Box8730,Beijing100080,China;DepartmentofPhysics,NankaiUniversity,Tianjin300071,China [2]EpartmentofPhysicsandMathematicalPhysicsandSpecialResearchCenterfor,P.O.Box8730,Beijing100080,China;DepartmentofPhysics,NankaiUniversity,Tianjin300071,China |
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| 摘 要： | The difference of τB and τAb indicates the role of the light flavors,We calculate the lifetinmes of B-meson and Λb based on the weak effective Hamiltonian while assuming the heavy baryon is constructed by a heavy b-quark and a diquark containing two light quarks.In this scenario,we use the information of the measured ratio τΛb/τB as input to predict rates of the inclusive weak decays of ∑b^(*) and Ξb^(*) into non-bottom final states.We find that these rates of ∑b^(*) and Ξb^(*) are much larger than those of B-mesons and Λb,We also give the predictions for the lifetimes of Ωb and Ω,Pheomenological implication of our result is discussed.
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| 关 键 词： | 夸克 Ab寿命 ∑b（＊）衰变速率 |
| 收稿时间： | 1999-11-05 |
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