ISSN - 00319007, EISSN - 10797114, Physical Review Letters, 2006, vol. 97, p. -
Observation of a new Ds meson decaying to DK at a mass of 2.86GeV/c2
We observe a new Ds meson with mass (2856.6Â±1. 5statÂ±5.0syst)MeV/c2 and width (48Â±7statÂ ±10syst)MeV/c2 decaying into D0K+ and D+KS0. In the same mass distributions, we also observe a broad structure with mass (2688Â± 4statÂ±3syst)MeV/c2 and width (112Â±7statÂ ±36syst)MeV/c2. To obtain this result, we use 240fb-1 of data recorded by the BABAR detector at the PEP-II asymmetric-energy e+e- storage rings at the Stanford Linear Accelerator Center running at center-of-mass energies near 10.6 GeV. © 2006 The American Physical Society.