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Observation of a new Ds meson decaying to DK at a mass of 2.86 GeV/c2 |
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| Authors: | Aubert B Barate R Bona M Boutigny D Couderc F Karyotakis Y Lees J P Poireau V Tisserand V Zghiche A Grauges E Lopez L Palano A Chen J C Qi N D Rong G Wang P Zhu Y S Eigen G Ofte I Stugu B Abrams G S Battaglia M Brown D N Button-Shafer J Cahn R N Charles E Gill M S Groysman Y Jacobsen R G Kadyk J A Kerth L T Kolomensky Yu G Kukartsev G Lynch G Mir L M Orimoto T J Pripstein M Roe N A Ronan M T Wenzel W A Del Amo Sanchez P Barrett M Ford K E Harrison T J Hart A J Hawkes C M Morgan S E Watson A T Held T Koch H Lewandowski B Pelizaeus M Peters K Schroeder T Steinke M Boyd J T Burke J P |
| Institution: | Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux, France. |
| Abstract: | We observe a new D_{s} meson with mass (2856.6+/-1.5_{stat}+/-5.0_{syst}) MeV/c;{2} and width (48+/-7_{stat}+/-10_{syst}) MeV/c;{2} decaying into D0K+ and D;{+}K_{S};{0}. In the same mass distributions, we also observe a broad structure with mass (2688+/-4_{stat}+/-3_{syst}) MeV/c;{2} and width (112+/-7_{stat}+/-36_{syst}) MeV/c;{2}. To obtain this result, we use 240 fb;{-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. |
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