Universal Isgur-Wise form factors from QCD sum rules in HQET
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We review the role of the universal Isgur-Wise functions parameterizing the $B$ meson semileptonic matrix elements to charm states in the infinite heavy quark mass limit. We also discuss the determination of one of such form factors by QCD sum rules in the framework of the Heavy Quark Effective Theory.
LaTex, 5 pages, 3 figures. Talk given at International Euroconference on Quantum Chromodynamics (QCD98), Montpellier, France, 2 - 8 Jul 1998
LaTex, 5 pages, 3 figures. Talk given at International Euroconference on Quantum Chromodynamics (QCD98), Montpellier, France, 2 - 8 Jul 1998