On the coupling of heavy mesons to pions in QCD

Abstract

We compute the strong coupling constant $g_{P^{\ast }P\pi }$, with $P$ and $P^{\ast }$ respectively pseudoscalar and vector heavy mesons by using the QCD sum rules approach. Our computation is based on the evaluation of the time ordered product of currents between the vacuum and the soft pion state. The so-called parasitic terms are taken into account and give a contribution to the sum rule of the same order of the lowest lying state, while higher dimension non perturbative terms have small numerical effects. The infinite heavy quark mass limit is also examined.

11 pages, LaTeX, UGVA-DPT 1994/06-856 and BARI-TH/94-171

References in corpus (8)

• Effective Lagrangian for Heavy and Light Mesons: Semileptonic Decays
• Radiative $D^{\ast }$ Decay Using Heavy Quark and Chiral Symmetry
• The Semileptonic Decays $D\to \pi (\rho )e\nu$ and $B\to \pi (\rho )e\nu$ from QCD Sum Rules
• Electromagnetic Interactions in Heavy Hadron Chiral Theory
• Operator product expansion in static-quark effective field theory: large perturbative correction
• The Decay $B\to \pi \ell \nu$ in Heavy Quark Effective Theory
• Radiative Heavy Meson Transitions
• Dependence of the Form Factors of $B\to \pi \ell \nu$ on the Heavy Quark Mass

Cited by in corpus (60)

• Phenomenology of Heavy Meson Chiral Lagrangians
• Are Y(4260) and {\rm Z${}_2^{+}$(4250)} ${\mathrm{D}}_1\mathrm{D}$ or ${\mathrm{D}}_0{\mathrm{D}}^{\ast }$ Hadronic Molecules?
• New meson spectroscopy with open charm and beauty
• A new interpretation for the $D_{s2}^{\ast }(2573)$ and the prediction of novel exotic charmed mesons
• $Z_c^{+}(3900)$ decay width in QCD sum rules
• Extraction of the D^*Dπcoupling from D^* decays
• $D^{\ast }D\pi$ form factor revisited
• Charm couplings and form factors in QCD sum rules
• A Constituent Quark-Meson Model for Heavy-Meson Processes
• $D^{\ast }D\pi$ and $B^{\ast }B\pi$ form factors from QCD Sum Rules
• Strong coupling of excited heavy mesons
• Calculation of the heavy-hadron axial couplings g_1, g_2, and g_3 using lattice QCD
• Vector and axial-vector couplings of D and D* mesons in 2+1 flavor Lattice QCD
• $D{D}^{\ast }$ potentials in chiral perturbation theory and possible molecular states
• $D^{\ast }$ Radiative Decays and Strong Coupling of Heavy Mesons with Soft Pions in a QCD Relativistic Potential Model
• The nature of $X(3872)$ from high-multiplicity $pp$ collisions
• Theoretical estimate of the $D^{\ast }\to D\pi$ decay rate
• J/psi couplings to charmed resonances and to pi
• ${\rm Y}$ absorption in hadronic matter
• Identifying $D_{sJ}(2700)$ through its decay modes
• Hard probes in heavy ion collisions at the LHC: heavy flavour physics
• $B^{\ast }B\pi (\gamma )$ couplings and $D^*\rar Dπ(γ) $-decays within a $1/M$-expansion in $full$ QCD
• Scalar, axial-vector and tensor resonances from the rho D^*, omega D^* interaction in the hidden gauge formalism
• Predicition for the decay width of a charged state near the $D_s{\bar{D}}^{\ast }/D_s^{\ast }\bar{D}$ threshold
• $B->\pi l\nu$ Form Factors Calculated on the Light-Front
• Remarks on the Strong Coupling Constants in Heavy Hadron Chiral Lagrangians
• Four-fermion heavy quark operators and light current amplitudes in heavy flavor hadrons
• Measuring B -> rho pi decays and the unitarity angle alpha
• $B_s^{\ast }BK$ vertex from QCD sum rules
• 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
• Measuring $\beta$ in $B\to D^{\ast +}{D}^{\ast -}{K}_s$ Decays
• Excited states of heavy baryons in the Skyrme model
• Leptonic Constant from B Meson Radiative Decay
• Newly observed $B(5970)$ and the predictions of its spin and strange partners
• Excited heavy meson decays to light vector mesons: implications for spectroscopy
• Couplings of pions with heavy baryons from light-cone QCD sum rules in the leading order of HQET
• Systematic Study on QCD Interactions of Heavy Mesons with $\rho$ Meson
• Form factors for semileptonic D decays
• Final State Interactions in $B->D\rho$ and $B->D^{\ast }\pi$ Decays
• Analysis of the Three-Body $B\to D^{+}{D}^{-}{\pi }^0$ Decay
• Heavy Meson Hyperfine Splitting: A Complete $1/m_Q$ Calculation
• Chiral loops in the isospin violating decays of D_{s1}(2460) and D*_{s0}(2317)
• Two photon decays of heavy vector mesons, $B^{\ast }\to B\gamma \gamma$,$D^{\ast }\to D\gamma \gamma$, and the possible determination of the $g_{B^{\ast }(D^{\ast })B(D)\pi }$ and $g_{B^{*}^0B^0γ}$ couplings
• Determination of the strong coupling $g_{B^{\ast }B\pi }$ from semi-leptonic $B\to \pi \ell \nu$ decay
• The semileptonic B->pi decay in a Constituent Quark-Meson model
• Sum Rules for Radiative and Strong Decays of Heavy Mesons
• $B\to K{\eta }^{(\prime )}\gamma$ decays in the standard model and in scenarios with universal extra dimensions
• B and B_s decays into three pseudoscalar mesons and the determination of the angle gamma of the unitarity triangle
• Determination of the strong g-coupling and of the ${\mu }_{B^{\ast }B\gamma }-$ strength from two-photon decays of heavy vector mesons
• Strong and Electromagnetic Decays of The $D$-wave Heavy Mesons
• Non-Leptonic Decays of B Mesons and Strong Coupling Constants
• Investigating quantum numbers of new $c\bar{s}$ states
• ${\rm Y}(4S)\to B^0\overline{B^0}\gamma$ Background at B-Factories
• Elusive exotic states
• Universal Isgur-Wise form factors from QCD sum rules in HQET
• 1/m_Q corrections in heavy meson decays
• Constraints on B--->pi,K transition form factors from exclusive semileptonic D-meson decays
• On the D*D$\pi$ and B*B$\pi$ coupling constants in the effective quark model with chiral symmetry
• B-Meson Properties from Modified Sum Rule Analyses