Charmed meson resonances from chiral coupled-channel dynamics
E. E. Kolomeitsev, M. F. M. Lutz
Abstract
Charmed meson resonances with quantum numbers JP=0+ and JP=1+ are generated in terms of chiral coupled-channel dynamics. At leading order in the chiral expansion a parameter-free prediction is obtained for the scattering of Goldstone bosons off charmed pseudo-scalar and vector mesons. The recently announced narrow open charm states observed by the BABAR and CLEO collaborations are reproduced. We suggest the existence of states that form an anti-triplet and a sextet representation of the SU(3) group. In particular, so far unobserved narrow isospin-singlet states with negative strangeness are predicted.
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