Semileptonic D->pi/K and B->pi/D decays in 2+1 flavor lattice QCD

Abstract

We present results for form factors of semileptonic decays of $D$ and $B$ mesons in 2+1 flavor lattice QCD using the MILC gauge configurations. With an improved staggered action for light quarks, we successfully reduce the systematic error from the chiral extrapolation. The results for $D$ decays are in agreement with experimental ones. The results for B decays are preliminary. Combining our results with experimental branching ratios, we then obtain the CKM matrix elements $|V_{cd}|$, $|V_{cs}|$, $|V_{cb}|$ and $|V_{ub}|$. We also check CKM unitarity, for the first time, using only lattice QCD as the theoretical input.

Talk presented at Lattice2004(heavy); 3 pages, 3 figures

References in corpus (13)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Massive Fermions in Lattice Gauge Theory
• The QCD spectrum with three quark flavors
• Comment on the heavy-->light form factors
• Semileptonic decays of $D$ mesons in three-flavor lattice QCD
• Lattice QCD calculation of $\bar{B}\to Dl\bar{\nu }$ decay form factors at zero recoil
• The Semileptonic Decays $B\to \pi l\nu$ and $D\to \pi l\nu$ from Lattice QCD
• Study of the q^2-Dependence of B --> pi ell nu and B --> rho(omega)ell nu Decay and Extraction of |V_ub|
• Heavy-light mesons with staggered light quarks
• Application of heavy-quark effective theory to lattice QCD: II. Radiative corrections to heavy-light currents
• Measurement of Br(Bbar -> D+l-nubar) and Determination of |Vcb|
• Application of heavy-quark effective theory to lattice QCD: III. Radiative corrections to heavy-heavy currents
• Semileptonic decays of $D$ mesons in unquenched lattice QCD

Cited by in corpus (95)

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• Measurement of the decay $B^0\to {\pi }^{-}{\ell }^{+}\nu$ and determination of $|V_{ub}|$
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• Measurement of |V_cb| and the Form-Factor Slope in Bbar -> D l- nubar Decays in Events Tagged by a Fully Reconstructed B Meson
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• New lattice action for heavy quarks
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• Challenges in Semileptonic B Decays
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• Optimal-observable analysis of possible new physics in $B\to D^{(\ast )}\tau {\nu }_{\tau }$
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• Limit on a Right-Handed Admixture to the Weak $b\to c$ Current from Semileptonic Decays
• |V_ub| from UTangles and B->pi l nu
• Quenched lattice calculation of the B --> D l nu decay rate
• B -> D* at zero recoil revisited
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• QCD Sum Rules Study of the Semileptonic $B_s(B^{\pm })(B^0)\to D_s[1968](D^0)(D^{\pm })l\nu$ Decays
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