We challenge the hadrogenesis conjecture by a study of radiative and isospin-violating
strong decays of charmed mesons with strangeness. The scalar Ds0*(2317) and the
axial vector Ds1*(2460) states are generated by coupled-channel dynamics based
on the leading order chiral Lagrangian. The effect of chiral corrections is investigated.
We show that taking into account large-Nc relations implies a measurable signal
for an exotic axial vector state in the eta D* invariant mass distribution.
The one-loop contribution to the electromagnetic decay amplitudes of scalar
and axial-vector states is calculated using the chiral Lagrangian, where the
role of light vector meson degrees of freedom is explored. We confront our results
with measured branching ratios. Once the light vector mesons are considered
a natural explanation of all radiative decay parameters is achieved.
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