Non-perturbatively Improved Heavy-Light Mesons: Masses and Decay Constants

Abstract

We present a study of the heavy-light spectrum and of the D- and B-meson decay constants. The results wer e obtained in the quenched approximation, by using the non-perturbatively improved Clover lattice action at beta=6.2, with a sample of 100 configurations, on a 24^3 x 64 lattice. After a careful analysis of th e systematic errors present in the extraction of the physical results, by assuming quite conservative discretization errors, we find f_Ds=231 +/- 12^{+6}_{-1} MeV, f_D = 211 +/- 14^{+0}_{-12} MeV, f_Ds/f_D=1.10(2), f_Bs = 204 +/- 16^{+28}_{-0} MeV, f_B = 179 +/- 18^{+26}_{-9} MeV, f_Bs/f_B=1.14(3)^{+0}_{-1}. Our results, which have smaller discretization errors than many previous estimates at fixed value of the lattice spacing $a$, support a large value of f_B in the quenched approximation.

26 pages, 9 Postscript figures

References in corpus (5)

• Operator product expansion in static-quark effective field theory: large perturbative correction
• B and D Meson Decay Constants in Lattice QCD
• Lattice Determination of Heavy-Light Decay Constants
• B Meson Decay Constants From NRQCD
• Non-perturbatively Renormalized Light-Quark Masses with the Alpha Action

Cited by in corpus (89)

• Exclusive semileptonic and nonleptonic decays of the Bc meson
• Light and heavy mesons in a soft-wall holographic approach
• Decay constants and form factors of s-wave and p-wave mesons in the covariant light-front quark model
• B-parameters of the complete set of matrix elements of (Delta B = 2) operators from the lattice
• Study of exclusive semileptonic and nonleptonic decays of $B_c^{-}$ in a nonrelativistic quark model
• Decay constants and radiative decays of heavy mesons in light-front quark model
• Improved Measurement of cal{B}(D^+ --> mu^+ nu) and the Pseudoscalar Decay Constant f_{D^+}
• Decay Constants of Heavy Vector Mesons in Relativistic Bethe-Salpeter Method
• Analysis of the masses and decay constants of the heavy-light mesons with QCD sum rules
• Charm Meson Decays
• B, D and K decays
• Precision Measurement of B(D+ -> mu+ nu) and the Pseudoscalar Decay Constant fD+
• Relativistic constituent quark model with infrared confinement
• Heavy --> Light semileptonic decays of pseudoscalar mesons from lattice QCD
• The spectrum of D_s mesons from lattice QCD
• Masses of ground-state mesons and baryons, including those with heavy quarks
• Measurement of B(Ds+ -->ell+ nu) and the Decay Constant fDs From 600/pb of e+e- Annihilation Data Near 4170 MeV
• Decay Constants of B and D Mesons from Non-perturbatively Improved Lattice QCD
• Consistent treatment of spin-1 mesons in the light-front formalism
• Spectroscopy of Doubly-Charmed Baryons in Lattice QCD
• Semileptonic $B_c$ decays and Charmonium distribution amplitude
• Heavy quark physics from lattice QCD
• Order a improved renormalization constants
• A proposal for B-physics on current lattices
• The transition form factors for semi-leptonic weak decays of $J/\psi$ in QCD sum rules
• Form factors for semileptonic, nonleptonic and rare $B(B_s)$ meson decays
• Chiral Symmetry Breaking and Meson Wave Functions in Soft-Wall AdS/QCD
• Nonleptonic two-body decays of single heavy baryons ${\Lambda }_Q$, ${\Xi }_Q$, and ${\Omega }_Q$ $(Q=b,c)$ induced by $W$ emission in the covariant confined quark model
• B- to light-meson transition form factors
• Exclusive decays $B\to {\ell }^{-}\bar{\nu }$ and $B\to D^{(\ast )}{\ell }^{-}\bar{\nu }$ in the covariant quark model
• Variational Analysis of Mass Spectra and Decay Constants for Ground State Pseudoscalar and Vector Mesons in Light-Front Quark Model
• Spectroscopy, lifetime and decay modes of the $T_{bb}^{-}$ tetraquark
• Analyses of decay constants and light-cone distribution amplitudes for s-wave heavy meson
• Masses of positive- and negative-parity hadron ground-states, including those with heavy quarks
• Recent results from lattice calculations
• Strong D* -> D+pi and B* -> B+pi couplings
• Heavy-Light Mesons on the Light Front
• An estimate of the B-->K*gamma form factor
• Heavy--light decay constants in the continuum limit of quenched lattice QCD
• Determination of the pseudoscalar decay constant $f_{D_s^{+}}$ via $D_s^{+}\to {\mu }^{+}{\nu }_{\mu }$
• Estimating Form Factors of $B_s\to D_s^{(\ast )}$ and their Applications to Semi-leptonic and Non-leptonic Decays
• Chiral corrections and lattice QCD results for fBs/fBd and (Delta ms/Delta md)
• Probing Non-leptonic Two-body Decays of $B_c$ meson
• The Mass of the b Quark
• Mixing effects on 1S and 2S state heavy mesons in the light-front quark model
• B-->pi and B-->K transitions in standard and quenched chiral perturbation theory
• Present knowledge of the Cabibbo-Kobayashi-Maskawa matrix
• Charm Quark Mass
• On the meson mass spectrum in the covariant confined quark model
• Non-perturbative tests of Heavy Quark Effective Theory
• Soft Photon Problem in Leptonic B-decays
• Measurement of B(D_S^+ --> ell^+ nu) and the Decay Constant f_D_{S^+}
• Analysis of the decay constants of the heavy pseudoscalar mesons with QCD sum rules
• Strong coupling constants of bottom and charmed mesons with scalar, pseudoscalar and axial vector kaons
• Twist-2 Pseudoscalar and Vector Meson Distribution Amplitudes in Light-Front Quark Model with Exponential-type Confining Potential
• Exclusive decays $J/\psi \to D_{(s)}^{(\ast )-}{\ell }^{+}{\nu }_{\ell }$ in a covariant constituent quark model with infrared confinement
• Semileptonic decays $B_c^{+}\to D_{(s)}^{(\ast )}(l^{+}\nu ,l^{+}{l}^{-},\nu \bar{\nu })$ in the perturbative QCD approach
• Semileptonic decays of $B_c$ mesons into charmonium states
• Mixing of B mesons and Decay Constants with the Non-Perturbatively Improved Action
• Semi-leptonic and Non-leptonic $B$ meson decays to charmed mesons
• Couplings between the $\rho$ and $D$- and $D^{\ast }$-mesons
• Heavy Quark Physics and Lattice QCD
• $g_{D_s^{\ast }D{K}^{\ast }(892)}$ and $g_{B_s^{\ast }B{K}^{\ast }(892)}$ coupling constants in QCD sum rules
• Scaling and Further Tests of Heavy Meson Decay Constant Determinations from Nonrelativistic QCD
• Heavy Quarks on the Lattice
• Heavy+light pseudoscalar meson semileptonic transitions
• SU(3) symmetry breaking in decay constants and electromagnetic properties of pseudoscalar heavy mesons
• Searching for doubly charmed tetraquark candidates $T_{cc}$ and $T_{cc\bar{s}}$ in $B_c$ decays
• Purely leptonic decays of the ground charged vector mesons
• Heavy flavor physics from lattice QCD
• Radiative decays $D^*_{(s)}\to D_{(s)}γ$ in covariant confined quark model
• Insight into $f_0(980)$ through the $B_{(s)}$ charmed decays
• Information on $B\to \pi \pi$ Provided by the Semileptonic Process $B\to \pi l\nu$
• Form Factors for Semileptonic B -> pi and D -> pi Decays from the Omnes Representation
• Investigation of the $D_s^{\ast }{D}_s{\eta }^{(\prime )}$ and $B_s^{\ast }{B}_s{\eta }^{(\prime )}$ vertices via QCD sum rules
• A QCD sum rules calculation of the $J/\psi D_s^{\ast }{D}_s$ strong coupling constant
• Extended nonlocal chiral-quark model for the D- and B-meson weak-decay constants
• A QCD sum rules calculation of the ${\eta }_c{D}^{\ast }D$ and ${\eta }_c{D}_s^{\ast }{D}_s$ form factors and strong coupling constants
• Exclusive $D\bar{D}$ meson pair production in peripheral ultrarelativistic heavy ion collisions
• Measuring $|V_{ub}|$ with B$\to D_s^{+}{X}_u$ transitions
• SU(3) breaking corrections to the $D$, $D^{\ast }$, $B$, and $B^{\ast }$ decay constants
• Spectroscopy of excited quarkonium states in the light-front quark model
• Static and dynamic properties of hadronic systems with heavy quarks b and c
• Charm Leptonic and Semileptonic Decays
• Three symmetry breakings in strong and radiative decays of strange heavy mesons
• Factorization and Decay Constants $f_{D_s^{\ast }}$ and $f_{D_s}$
• The B\to D_s^{(*)}η^{(\prime)} decays in the perturbative QCD
• Heavy pseudoscalar-meson decay constants with strangeness from the extended nonlocal chiral-quark model
• Extended nonlocal chiral-quark model for the heavy-light quark systems