Observation of a narrow resonance of mass 2.46 GeV/c(2) decaying to D-s(*+)pi(0) and confirmation of the D-sJ(*)(2317) state Academic Article uri icon


  • Using 13.5 fb-1 of e+e- annihilation data collected with the CLEO II detector, we have observed a narrow resonance decaying to D*s+ 0 with a mass near 2.46 GeV/c2. The search for such a state was motivated by the recent discovery by the BaBar Collaboration of a narrow state at 2.32 GeV/c 2, the D*sJ(2317)+, that decays to D s+ 0. Reconstructing the Ds+ 0 and D*s+ 0 final states in CLEO data, we observe peaks in both of the corresponding reconstructed mass difference distributions, M(D s0) = M(Ds0) - M(D s) and M(D*s 0) = M(D*s 0) - M(D*s), both of them at values near 350 MeV/c2. We interpret these peaks as signatures of two distinct states, the D*sJ(2317)+ plus a new state, designated as the DsJ(2463)+. Because of the similar M values, each of these states represents a source of background for the other if photons are lost, ignored or added. A quantitative accounting of these reflections confirms that both states exist. We have measured the mean mass differences M(Ds 0) = 350.0 1.2 (stat) 1.0 (syst) MeV/c2 for the D*sJ(2317)+ state, and M(D* s 0) = 351.2 1.7 (stat) 1.0 (syst) MeV/c2 for the new DsJ(2463)+ state. We have also searched, but find no evidence, for decays of the two states via the channels D*s+ , Ds+ , and Ds+ + -. The observations of the two states at 2.32 and 2.46 GeV/c2, in the D s+ 0 and D*s+ 0 decay channels, respectively, are consistent with their interpretations as cs mesons with an orbital angular momentum L = 1 and spin and parity JP = 0+ and 1+. 2003 The American Physical Society.

published proceedings


author list (cited authors)

  • Besson, D., Anderson, S., Frolov, V. V., Gong, D. T., Kubota, Y., Li, S. Z., ... Edwards, K. W.

citation count

  • 392

complete list of authors

  • Besson, D||Anderson, S||Frolov, VV||Gong, DT||Kubota, Y||Li, SZ||Poling, R||Smith, A||Stepaniak, CJ||Urheim, J||Metreveli, Z||Seth, KK||Tomaradze, A||Zweber, P||Arms, K||Eckhart, E||Gan, KK||Gwon, C||Pedlar, TK||von Toerne, E||Severini, H||Skubic, P||Dytman, SA||Mueller, JA||Nam, S||Savinov, V||Hinson, JW||Huang, GS||Lee, J||Miller, DH||Pavlunin, V||Sanghi, B||Shibata, EI||Shipsey, IPJ||Cronin-Hennessy, D||Park, CS||Park, W||Thayer, JB||Thorndike, EH||Coan, TE||Gao, YS||Liu, F||Stroynowski, R||Artuso, M||Boulahouache, C||Blusk, S||Dambasuren, E||Dorjkhaidav, O||Mountain, R||Muramatsu, H||Nandakumar, R||Skwarnicki, T||Stone, S||Wang, JC||Mahmood, AH||Csorna, SE||Danko, I||Bonvicini, G||Cinabro, D||Dubrovin, M||McGee, S||Bornheim, A||Lipeles, E||Pappas, SP||Shapiro, A||Sun, WM||Weinstein, AJ||Briere, RA||Chen, GP||Ferguson, T||Tatishvili, G||Vogel, H||Watkins, ME||Adam, NE||Alexander, JP||Berkelman, K||Boisvert, V||Cassel, DG||Duboscq, JE||Ecklund, KM||Ehrlich, R||Galik, RS||Gibbons, L||Gittelman, B||Gray, SW||Hartill, DL||Heltsley, BK||Hsu, L||Jones, CD||Kandaswamy, J||Kreinick, DL||Magerkurth, A||Mahlke-Kruger, H||Meyer, TO||Mistry, NB||Patterson, JR||Peterson, D||Pivarski, J||Richichi, SJ||Riley, D||Sadoff, AJ||Schwarthoff, H||Shepherd, MR||Thayer, JG||Urner, D||Wilksen, T||Warburton, A||Weinberger, M||Athar, SB||Avery, P||Breva-Newell, L||Potlia, V||Stoeck, H||Yelton, J||Eisenstein, BI||Gollin, GD||Karliner, I||Lowrey, N||Plager, C||Sedlack, C||Selen, M||Thaler, JJ||Williams, J||Edwards, KW

publication date

  • August 2003