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arXiv · hep-ph/9710344

On Quark-Hadron Duality in the Heavy Quark Sector

P. Colangelo
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Abstract

I discuss the issue of quark-hadron duality in the system of heavy-light quark mesons. As an example, I consider a correlator of two currents comprising heavy quark operators, and I compare the OPE expression with the result obtained by a complete insertion of hadronic states. After a smearing procedure, OPE and hadronic spectral functions agree with each other. However, the local behaviour of the two functions is different, and the difference manifests itself in a term which is absent in the OPE.

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P. Colangelo. 1997-10-14. On Quark-Hadron Duality in the Heavy Quark Sector. https://doi.org/10.1016/s0920-5632(97)01112-2

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