Radiative decays of the $(0^{+},1^{+})$ strange-bottom mesons

Abstract

In this article, we assume that the $(0^{+},1^{+})$ strange-bottom mesons are the conventional $b\bar{s}$ mesons, and calculate the electromagnetic coupling constants $d$, $g_1$, $g_2$ and $g_3$ using the light-cone QCD sum rules. Then we study the radiative decays $B_{s0}\to B_s^{\ast }\gamma$, $B_{s1}\to B_s\gamma$, $B_{s1}\to B_s^{\ast }\gamma$ and $B_{s1}\to B_{s0}\gamma$, and observe that the widths are rather narrow. We can search for the $(0^{+},1^{+})$ strange-bottom mesons in the invariant $B_s{\pi }^0$ and $B_s^{\ast }{\pi }^0$ mass distributions in the strong decays or in the invariant $B_s^{\ast }\gamma$ and $B_s\gamma$ mass distributions in the radiative decays.

Comments: 16 pages, 4 figures, revised version