Spectra and decay constants of Bc-like and B0⁎ mesons in QCD

Abstract

Using the existing state of art of the QCD expressions of the two-point correlators into the Inverse Laplace sum rules (LSR) within stability criteria, we present a first analysis of the spectra and decay constants of Bc-like scalar (0++) and axial-vector (1++) mesons and revisit the ones of the Bc⁎(1−−) vector meson. Improved predictions are obtained by combining these LSR results with some mass-splittings from Heavy Quark Symmetry (HQS). We complete the analysis by revisiting the B0⁎(0++) mass which might be likely identified with the BJ⁎(5732) experimental candidate. The results for the spectra collected in Table 2 are compared with some recent lattice and potential models ones. New estimates of the decay constants are given in Table 3.

Keywords

• QCD spectral sum rules
• Perturbative and non-pertubative calculations
• Hadron and Quark masses
• Gluon condensates