منابع مشابه
Update of jVcbj from the B̄ → D lν̄ form factor at zero recoil with three-flavor lattice QCD
Department of Physics and Astronomy, Seoul National University, Seoul, South Korea Physics Department, Brookhaven National Laboratory, Upton, New York, USA Department of Physics, Washington University, St. Louis, Missouri, USA Department of Physics, The Ohio State University, Columbus, Ohio, USA Department Physics and Astronomy, University of Utah, Salt Lake City, Utah, USA Physics Department, ...
متن کاملℓν Form Factor at Zero Recoil from Three-flavor Lattice Qcd: a Model Independent Determination of |v Cb |
We present the first lattice QCD calculation of the form factor for B → D∗lν with three flavors of sea quarks. We use an improved staggered action for the light valence and sea quarks (the MILC configurations), and the Fermilab action for the heavy quarks. The form factor is computed at zero recoil using a new double ratio method that yields the form factor more directly than the previous Fermi...
متن کاملLattice QCD calculation of B̄ → Dlν̄ decay form factors at zero recoil
A lattice QCD calculation of the B̄ → Dlν̄ decay form factors is presented. We obtain the value of the form factor h+(w) at the zero-recoil limit w = 1 with high precision by considering a ratio of correlation functions in which the bulk of the uncertainties cancels. The other form factor h−(w) is calculated, for small recoil momenta, from a similar ratio. In both cases, the heavy quark mass depe...
متن کاملLattice QCD calculation of B̄ ̃Dln̄ decay form factors at zero recoil
A lattice QCD calculation of the B̄→Dl n̄ decay form factors is presented. We obtain the value of the form factor h1(w) at the zero-recoil limit w51 with high precision by considering a ratio of correlation functions in which the bulk of the uncertainties cancels. The other form factor h2(w) is calculated, for small recoil momenta, from a similar ratio. In both cases, the heavy quark mass depende...
متن کاملHigher order 1/m corrections at zero recoil.
The general structure of the 1/m corrections at zero recoil is studied. The relevant matrix elements are forward matrix elements of local higher dimensional operators and their time ordered products with higher order terms from the Lagrangian. These matrix elements may be classified in a simple way and the analysis at the non recoil point for the form factor of heavy quark currents simplifies d...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 2000
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(00)91665-7