Doubly Heavy Systems: Decays and Ope
نویسنده
چکیده
We discuss questions related to the application of OPE for the long-lived systems with two heavy flavors. The values of quark masses entering such calulations are constrained by use of currently available data on the lifetimes of B d and B c-mesons. The lifetimes of doubly charmed baryons at these values of parameters are evaluated. The necessary comments on the difference in the results obtained previously are made.
منابع مشابه
0 D ec 1 99 9 Lifetimes of doubly heavy baryons
We perform a detailed investigation of total lifetimes for the doubly heavy baryons Ξ QQ ′ , Ω QQ ′ in the framework of operator product expansion over the inverse heavy quark mass, whereas, to estimate matrix elements of operators obtained in OPE, approximations of nonrelativistic QCD are used.
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