Strong coupling of excited heavy mesons

Abstract

We compute the strong coupling constant $G_{B^{\ast \ast }B\pi }(G_{D^{\ast \ast }D\pi })$, where $B^{\ast \ast }$ ($D^{\ast \ast }$) is the $0^{+}$ $P-$wave $b\bar{q}(c\bar{q})$ state, by QCD sum rules and by light-cone sum rules. The two methods give compatible results in the limit $m_Q\to \infty$, with a rather large value of the coupling constant. We apply the results to the calculation of the hadronic widths of the positive parity $B$ and $D$ states and to the chiral loop contribution to the ratio $f_{D_s}/f_D$.

31 pages, RevTeX, 4 figures appended as uuencoded file

References in corpus (21)

• Heavy Quark Symmetry
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ couplings in QCD
• Strong Decays of Excited Heavy Mesons In Chiral Perturbation Theory
• Exclusive Radiative B-Decays in the Light-Cone QCD Sum Rule Approach
• Effective Lagrangian for Heavy and Light Mesons: Semileptonic Decays
• QCD Calculation of the $B\to \pi ,K$ Form Factors
• Chiral Perturbation Theory for $f_{D_S}/f_D$ and $B_{B_S}/B_B$
• Light Vector Resonances in the Effective Chiral Lagrangian for Heavy Mesons
• Soft contribution to the pion form factor from light-cone QCD sum rules
• Heavy Hadron Chiral Perturbation Theory
• On the coupling of heavy mesons to pions in QCD
• Soft Pion Emission in Semileptonic $B$-Meson Decays
• Chiral Perturbation Theory for SU(3) Breaking in Heavy Meson Systems
• The Isgur-Wise Function in Small Velocity Limit
• Phenomenology of $B_s$ Decays
• Role of Light Vector Mesons in the Heavy Particle Chiral Lagrangian
• SYMMETRIES FOR VECTOR AND AXIAL-VECTOR MESONS
• Excited Heavy Mesons and Kaon Loops in Chiral Perturbation Theory
• Heavy Meson Hyperfine Splitting: A Complete $1/m_Q$ Calculation
• $\pi$-$A_1$ electromagnetic form factors and light-cone QCD sum rules
• Combining Vector-- and Heavy Quark Symmetry

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