Precision study of B^* Bπcoupling for the static heavy-light meson

Abstract

We compute the B^*Bπcoupling \hat{g}_{\infty} for static heavy-light meson using all-to-all propagators. It is shown that low-mode averaging with 100 low-lying eigenmodes indeed improves the signal for the 2-point and 3-point functions for heavy-light meson significantly. Our study suggests that the all-to-all propagator will be a very efficient method for high precision computation of the B^*Bπcoupling especially in unquenched QCD where the number of configurations is limited.

30 pages, 25 figures, typos corrected

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Cited by in corpus (13)

• Precise heavy-light meson masses and hyperfine splittings from lattice QCD including charm quarks in the sea
• Power Counting and Perturbative One Pion Exchange in Heavy Meson Molecules
• Deriving the existence of $B{\bar{B}}^{\ast }$ bound states from the X(3872) and Heavy Quark Symmetry
• Calculation of the heavy-hadron axial couplings g_1, g_2, and g_3 using lattice QCD
• BB Potentials in Quenched Lattice QCD
• Determination of B*B pi coupling in unquenched QCD
• Memorino on the `1/2 vs. 3/2 Puzzle' in $\bar{B}\to l\bar{\nu }{X}_c$ -- a Year Later and a Bit Wiser
• Probing gluon dynamics by charm and bottom mesons in nuclear medium from heavy meson effective theory with 1/M-corrections
• The B*Bpi coupling using relativistic heavy quarks
• Heavy-light mesons in the epsilon-regime
• Determination of the strong coupling $g_{B^{\ast }B\pi }$ from semi-leptonic $B\to \pi \ell \nu$ decay
• On the matrix elements of dB=0 operators in the heavy meson decay widths
• High precision study of B*B pi coupling in unquenched QCD