A canonical DS (2317)?

It is shown that quark mass dependence induced by one-loop corrections to the Breit-Fermi spin-dependent one-gluon-exchange potential permits an accurate determination of heavy-light meson masses. Thus the D-s(2317) is a canonical c (s) over bar meson in this scenario. The multiplet splitting relationship of chiral doublet models, M(1(+)) - M(1(-)) = M(0(+)) - M(0(-)), holds to good accuracy in the D and D-s systems, but is accidental. Radiative transitions and bottom flavoured meson masses are discussed. (C) 2007 Elsevier B.V. All rights reserved.