$D^{\ast }D\rho$ and $B^{\ast }B\rho$ strong couplings in light-cone sum rules

Abstract

We present an improved calculation of the strong coupling constants $g_{D^{\ast }D\rho }$ and $g_{B^{\ast }B\rho }$ in light-cone sum rules including the one-loop QCD corrections of leading power with $\rho$ meson distribution amplitudes. We further compute the subleading-power corrections from two-particle and three-particle higher-twist contributions at leading order up to twist-4 accuracy. The next-to leading order corrections to leading power contribution offset the subleading-power corrections to some extend numerically, and our numerical results are consistent with previous works from sum rules. The comparisons between our results and the existing model-dependent estimations are also made.

arXiv comment25 pages, 2 figures

References in corpus (34)

• Phenomenology of Heavy Meson Chiral Lagrangians
• Parton Physics on Euclidean Lattice
• New Results on B->pi, K, eta Decay Formfactors from Light-Cone Sum Rules
• B_{d,s}->rho, omega, K*, phi Decay Form Factors from Light-Cone Sum Rules Revisited
• $B\to V{\ell }^{+}{\ell }^{-}$ in the Standard Model from Light-Cone Sum Rules
• Final State Interactions in Hadronic B Decays
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings in QCD
• Weak form factors for heavy meson decays: an update
• Constraints on Form Factors For Exclusive Semileptonic Heavy to Light Meson Decays
• Higher Twist Distribution Amplitudes of Vector Mesons in QCD: Twist-4 Distributions and Meson Mass Corrections
• Comment on the heavy-->light form factors
• Charming penguins in B => K* pi, K (rho,omega,phi) decays
• J/psi absorption by pi and rho mesons in a meson exchange model with anomalous parity interactions
• Effective Lagrangian for Heavy and Light Mesons: Semileptonic Decays
• B-meson decay constants: a more complete picture from full lattice QCD
• QCD corrections to $B\to \pi$ form factors from light-cone sum rules
• Light Vector Resonances in the Effective Chiral Lagrangian for Heavy Mesons
• Direct CP Violation in Charmless Three-body Decays of $B$ Mesons
• Semileptonic charm decays $D\to \pi l{\nu }_{ł}$ and $D\to Kl{\nu }_l$ from QCD Light-Cone Sum Rules
• Perturbative QCD Correction to the Light-Cone Sum Rule for the $B^{\ast }B\pi$ and $D^{\ast }D\pi$ Couplings
• Subleading-power corrections to the radiative leptonic $B\to \gamma \ell \nu$ decay in QCD
• The bottom-quark mass from non-relativistic sum rules at NNNLO
• Analysis of the vertices D^*D^* P, D^*D V and DDV with light-cone QCD sum rules
• The $\rho$-meson light-cone distribution amplitudes from lattice QCD
• Light-cone distribution amplitudes of vector meson in large momentum effective theory
• Matching the Quasi Meson Distribution Amplitude in RI/MOM scheme
• Effective Lagrangian for Heavy and Light Mesons: Radiative B Decays
• Subleading power corrections to the pion-photon transition form factor in QCD
• B to rho ell nu form factors in lattice QCD
• Semileptonic B -> rho and B -> a_1 transitions in a quark-meson model
• Analysis of the vertices $DDV$ and $D^{\ast }DV$ with light-cone QCD sum rules
• Strong Couplings of Heavy Mesons to A Light Vector Meson in QCD
• Possible explanation of the discrepancy of the light-cone QCD sum rule calculation of g(D*Dpi) coupling with experiment
• Systematic Study on QCD Interactions of Heavy Mesons with $\rho$ Meson

Cited by in corpus (2)

• An improved calculation of the $D_{(s)}^{\ast }{D}_{(s)}V$ and $B_{(s)}^{\ast }{B}_{(s)}V$ couplings from light-cone sum rules
• Strong coupling constants of charmed and bottom mesons with light vector mesons in QCD sum rules