Lattice measurement of the Isgur-Wise functions tau_1/2 and tau_3/2

Abstract

We propose a method to compute the Isgur-Wise form factors tau_1/2(1) and tau_3/2(1) for the decay of B mesons into orbitally excited (P wave) D** charmed mesons on the lattice in the static limit. We also present the result of an exploratory numerical simulation which shows that the signal/noise ratio allows for a more dedicated computation. We find tau_1/2(1)=0.38(5) and tau_3/2(1)= 0.53(8), with yet unknown systematic errors. These preliminary numbers agree fairly well with theoretical expectation.

LaTeX, 13 pages, 3 eps figures

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• Measurement of Masses and Widths of Excited Charm Mesons $D_2^{\ast }$ and Evidence for Broad States
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Cited by in corpus (16)

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• B -> D* at zero recoil revisited
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• Production of P-wave Charmed Mesons in Hadronic B Decays
• Lattice calculation of the Isgur-Wise functions tau_{1/2} and tau_{3/2} with dynamical quarks
• Proposal to study $B_s\to {\bar{D}}_{sJ}$ transitions
• Decay constants of P-wave heavy-light mesons from unquenched lattice QCD
• Lattice renormalization of the static quark derivative operator
• The solution to the `$1/2$ vs $3/2$' puzzle
• Weak Radiative B Decays
• Semileptonic B decays into even parity charmed mesons
• Chiral loop corrections to weak decays of B mesons to positive and negative parity charmed mesons
• Unexpected pattern of transitions to radial excitations by heavy quark current
• B \to D'_0 (D'_1)\ell \bar νdecays in HQEFT
• Role of Resonances in Heavy Meson Processes within Standard Model and Beyond