New Heavy-Light Mesons Q

Abstract

We succeed in reproducing the = 1 B mesons B1(5720), B ∗ 2 (5745), and B ∗ s2(5839) that were recently reported by D0 and CDF, using our semi-relativistic quark potential model, which also succeeds in predicting the mass spectra of the narrow DsJ , as well as broad D∗ 0(0 ) and D′ 1(1 ) particles observed a couple of years ago. The mass of higher excited states ( = 1, 2) of B and Bs mesons, which have not yet been observed, is also predicted to first order in p/mb with the internal quark momentum p and the b quark mass mb. We find that the corresponding BsJ are below the BK/B ∗K threshold and should have narrow decay widths, contrary to most other predictions. Also, already established states ( = 0 and = 1) of D, Ds, B, and Bs heavy mesons are simultaneously reproduced in good agreement with experimental data, within one percent accuracy. To calculate these D/Ds and B/Bs heavy mesons, we use different values of the strong coupling, αs and α b s, respectively.