Pattern of Lifetimes of Beauty Hadrons and Quark-hadron Duality in Heavy Quark Expansion
نویسنده
چکیده
In the heavy quark limit, the inclusive decay rate of weakly decaying heavy hadron (HQ) can be expressed in an expansion of the weak matrix elements in powers of 1/mQ, where mQ is the heavy quark mass . (In this article, though we discuss generally for a heavy system, b or c but quantitatively refer only to beauty case). At the leading order, the hadronic decay rate is given by the free heavy quark decay rate, universal for all hadrons of given flavour quantum number, Q:
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تاریخ انتشار 2000