Strong Decays of the Radial Excited States $B(2S)$ and $D(2S)$

Abstract

The strong OZI allowed decays of the first radial excited states $B(2S)$ and $D(2S)$ are studied in the instantaneous Bethe-Salpeter method, and by using these OZI allowed channels we estimate the full decay widths: ${\Gamma }_{B^0(2S)}=24.4$ MeV, ${\Gamma }_{B^{+}(2S)}=23.7$ MeV, ${\Gamma }_{D^0(2S)}=11.3$ MeV and ${\Gamma }_{D^{+}(2S)}=11.9$ MeV. We also predict the masses of them: $M_{B^0(2S)}=5.777$ GeV, $M_{B^{+}(2S)}=5.774$ GeV, $M_{D^0(2S)}=2.390$ GeV and $M_{D^{+}(2S)}=2.393$ GeV.

6 pages, 1 figure