Observation of a new Ds meson decaying to DK at a mass of 2.86 GeV/c2

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...

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Published in:Physical review letters 2006-12, Vol.97 (22), p.222001-222001
Main 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, Cottingham, W N, Walker, D, Cuhadar-Donszelmann, T, Fulsom, B G, Hearty, C, Knecht, N S, Mattison, T S, McKenna, J A, Khan, A, Kyberd, P, Saleem, M, Sherwood, D J, Teodorescu, L, Blinov, V E, Bukin, A D, Druzhinin, V P, Golubev, V B, Onuchin, A P, Serednyakov, S I, Skovpen, Yu I, Solodov, E P, Todyshev, K Yu, Best, D S, Bondioli, M, Bruinsma, M, Chao, M, Curry, S, Eschrich, I, Kirkby, D, Lankford, A J, Lund, P, Mandelkern, M, Mommsen, R K, Roethel, W, Stoker, D P, Abachi, S, Buchanan, C, Foulkes, S D, Gary, J W, Long, O, Shen, B C, Wang, K
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Language:English
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Summary: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.
ISSN:0031-9007