Universal Isgur-Wise form factors from QCD sum rules in HQET

Abstract

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

References in corpus (16)

• Heavy Quark Symmetry
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings in QCD
• A Constituent Quark-Meson Model for Heavy-Meson Processes
• Strong coupling of excited heavy mesons
• On the coupling of heavy mesons to pions in QCD
• Quantitative Predictions for $B$ semileptonic decays into $D,D^{\ast }$ and the orbitally excited $D^{\ast \ast }$ in quark models à la Bakamjian-Thomas
• Model independent results for $B\to D_1(2420)\ell \bar{\nu }$ and $B\to D_2^{\ast }(2460)\ell \bar{\nu }$ at order ${\Lambda }_{QCD}/m_{c,b}$
• QCD Sum Rules for Masses of Excited Heavy Mesons
• $B^{\ast }B\pi (\gamma )$ couplings and $D^*\rar Dπ(γ) $-decays within a $1/M$-expansion in $full$ QCD
• Two-loop corrections to the Isgur-Wise function in QCD sum rules
• Order (1/m_Q) Corrections to Masses of Excited Heavy Mesons From QCD Sum Rules
• Theoretical Analysis of B -> D^{**} pi Decays
• Semi-leptonic B decays into higher charmed resonances
• Heavy Quark S- to P-Wave Transitions in a Consistent Quark Model
• Modelling form factors in HQET
• Study of the Reactions $B\to D^{\ast }\pi \pi$ and $B\to D^{\ast }\rho \pi$

Cited by in corpus (2)

• The decays $\bar{B}\to D^{\ast \ast }\pi$ and the Isgur-Wise functions ${\tau }_{1/2}(w)$, ${\tau }_{3/2}(w)$
• One Interesting New Sum Rule Extending Bjorken's to order {1/m_Q}