A Holographic Model of Heavy-light Mesons

Abstract

We construct a holographic model of heavy-light mesons by extending the AdS/QCD to incorporate the behavior of the heavy quark limit. In that limit, the QCD dynamics is governed by the light quark and the heavy quark simply plays the role of a static color source. The heavy quark spin symmetry can be treated as a global symmetry in the AdS bulk. As a consequence, the heavy-light mesons are mapped to "fermions" in the AdS theory. The light flavor chiral symmetry is naturally built in by this construction, and its breaking produces the splitting of the parity-doubled heavy-light meson states. The scaling dependences of physical quantities on the heavy quark mass in the heavy quark effective theory are reproduced. The mass spectra and decay constants of the B and D mesons can be well fit by suitable choices of model parameters. The couplings between the heavy-light mesons and the pions are also calculated. The holographic model may capture the essence of the long distance effects of QCD and can serve as a useful tool for studying the non-perturbative hadronic matrix elements involving heavy-light mesons.

31 pages, 2 figures

References in corpus (9)

• Measurement of the difference of CP-violating asymmetries in D0 -> K+K- and D0 ->pi+pi- decays at CDF
• The Cornell Potential from General Geometries in AdS / QCD
• The AdS/QCD Correspondence: Still Undelivered
• Conclusions from CDF Results on CP Violation in D^0 \to π^+π^-, K^+K^- and Future Tasks
• Holographic heavy-light mesons from non-Abelian DBI
• Dimensions of Supersymmetric Operators from AdS/CFT
• Remarks on Heavy-Light Mesons from AdS/CFT
• HQET at order 1/m: III. Decay constants in the quenched approximation
• Successes and Failures of a More Comprehensive Hard Wall AdS/QCD

Cited by in corpus (8)

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• Holographic Heavy-Light Chiral Effective Action
• Heavy Holographic Exotics: Tetraquarks as Efimov States
• Heavy and Strange Holographic Baryons
• Flavor Exotic Triply-Heavy Tetraquark States in AdS/QCD Potential
• Holographic heavy-baryons in the Witten-Sakai-Sugimoto model with the D0-D4 background
• Holographic QCD model for $N_f=4$