Journal
PHYSICAL REVIEW D
Volume 81, Issue 11, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.81.118101
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We comment on the recent observation of the decay mode D-sJ*(2860)(+) -> D*K by the BABAR Collaboration [B. Aubert et al. (BABAR Collaboration), arXiv:0908.0806], and contest their conclusion that the data exclude a 0(+) assignment for the D-sJ*(2860)(+). In particular, we argue that the observed branching fraction B(D-sJ*(2860)(+) -> D*K/B(D-sJ*(2860)(+) -> DK) = 1.1 +/- 0.15 +/- 0.19 supports the existence of two largely overlapping resonances at about 2.86 GeV, namely, a pair of radially excited tensor (2(+)) and scalar (0(+)) c (s) over bar states. This scenario is further justified by comparing with the corresponding excited charmonium states. Also other aspects of the charm-strange spectrum are discussed.
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