New Charm Spectroscopy: Insights from Theory
De Fazio, Fulvia
Original · EN
We discuss several new observations of mesons with open charm. In particular, we consider DsJ(2317) and DsJ(2460) and compare their isospin violating decays into D⁽*⁾ₛ π to the radiative decays analysed using light-cone QCD sum rules. The results support the interpretation of these two mesons as ordinary c s states. In the case of DsJ(2860) and DsJ(2710) we compute the strong decays in the heavy quark limit. Comparison of the results with recent measurements of the BaBar Collaboration leads to identify DsJ(2710) with the first radial excitation of Dₛ*, while the identification is still uncertain in the case of DsJ(2860).
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