Analysis of the masses and decay constants of the heavy-light mesons with QCD sum rules

In this article, we calculate the contributions of the vacuum condensates up to dimension-6 including the O(α_s) 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 (D, D*), (D_s, D_s^*), (D₀^*(2400), D₁(2430)), (D_s0^*(2317), D_s1(2460)), (B, B*), (B_s, B_s^*) can be well reproduced, while the predictions for the masses of (B₀^*, B₁) and (B_s0^*, B_s1) 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. (orig.)