Update on strong and radiative decays of the $$D_{s0}^*(2317)$$ D s 0 ∗ ( 2317 ) and $$D_{s1}(2460)$$ D s 1 ( 2460 ) and their bottom cousins

The isospin breaking and radiative decay widths of the positive-parity charm-strange mesons, $$D^{*}_{s0}$$ and $$D_{s1}$$ , and their predicted bottom-strange counterparts, $$B^{*}_{s0}$$ and $$B_{s1}$$ , as hadronic molecules are revisited. This is necessary, since the $$B^{*}_{s0}$$ and $$B_{s1}$$ masses used in (Cleven et al., Eur Phys J A 50:149, 2014) were too small, in conflict with the heavy quark flavour symmetry. Furthermore, not all isospin breaking contributions were considered. We here present a method to restore heavy quark flavour symmetry, correcting the masses of $$B^{*}_{s0}$$ and $$B_{s1}$$ , and include the complete isospin breaking contributions up to next-to-leading order. With this we provide updated hadronic decay widths for all of $$D^{*}_{s0}$$ , $$D_{s1}$$ , $$B^{*}_{s0}$$ and $$B_{s1}$$ . Results for the partial widths of the radiative deays of $$D_{s0}^*(2317)$$ and $$D_{s1}(2460)$$ are also renewed in light of the much more precisely measured $$D^{*+}$$ width. We find that $$B_s\pi ^0$$ and $$B_s\gamma $$ are the preferred channels for searching for $$B_{s0}^*$$ and $$B_{s1}$$ , respectively.