Regular Article - Theoretical Physics
Analysis of the masses and decay constants of the heavy-light mesons with QCD sum rules
Department of Physics, North China Electric Power University, Baoding, 071003, People’s Republic of China
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Accepted: 28 August 2015
Published online: 15 September 2015
In this article, we calculate the contributions of the vacuum condensates up to dimension-6 including the corrections to the quark condensates in the operator product expansion, then we study the masses and decay constants of the pseudoscalar, scalar, vector, and axial-vector heavy-light mesons with the QCD sum rules in a systematic way. The masses of the observed mesons , , , , can be well reproduced, while the predictions for the masses of and can be confronted with the experimental data in the future. We obtain the decay constants of the pseudoscalar, scalar, vector, and axial-vector heavy-light mesons, which have many phenomenological applications in studying the semi-leptonic and leptonic decays of the heavy-light mesons.
© SIF and Springer-Verlag Berlin Heidelberg, 2015