P-wave charmed mesons in e+e- annihilation
- Avery, P;
- Besson, D;
- Garren, L;
- Yelton, J;
- Bowcock, T;
- Kinoshita, K;
- Pipkin, FM;
- Procario, M;
- Wilson, Richard;
- Wolinski, J;
- Xiao, D;
- Ammar, R;
- Baringer, P;
- Haas, P;
- Lam, Ha;
- Jawahery, A;
- Park, CH;
- Nelson, JK;
- Perticone, D;
- Poling, R;
- Chen, W-Y;
- Dominick, J;
- McIlwain, RL;
- Miller, DH;
- Ng, CR;
- Schaffner, SF;
- Shibata, EI;
- Yao, W-M;
- Sparks, K;
- Thorndike, EH;
- Alam, MS;
- Kim, IJ;
- Li, WC;
- Lou, XC;
- Sun, CR;
- Fulton, R;
- Hempstead, M;
- Jensen, T;
- Johnson, DR;
- Kagan, H;
- Kass, R;
- Morrow, F;
- Whitmore, J;
- Bortoletto, D;
- Goldberg, M;
- Horwitz, N;
- Mestayer, MD;
- Moneti, GC;
- Sharma, V;
- Shipsey, IPJ;
- Skwarnicki, T;
- Csorna, SE;
- Letson, T;
- Alexander, J;
- Artuso, M;
- Bebek, C;
- Berkelman, K;
- Cassel, DG;
- Cheu, E;
- Coffman, DM;
- Crawford, G;
- DeWire, JW;
- Drell, PS;
- Ehrlich, R;
- Galik, RS;
- Gittelman, B;
- Gray, SW;
- Halling, AM;
- Hartill, DL;
- Heltsley, BK;
- Kandaswamy, J;
- Katayama, N;
- Kreinick, DL;
- Kubota, Y;
- Lewis, JD;
- Mistry, NB;
- Mueller, J;
- Namjoshi, R;
- Nandi, S;
- Nordberg, E;
- O'Grady, C;
- Peterson, D;
- Pisharody, M;
- Riley, D;
- Sapper, M;
- Silverman, A;
- Stone, S;
- Worden, H;
- Worris, M;
- Sadoff, AJ
- et al.
Abstract
Using the CLEO detector at the Cornell Electron Storage Ring, we have found evidence for L=1 charmed mesons in e+e- annihilations. We observe a D**0 state at mass 2461±3±1 MeV/c2 and width 20-12-10+9+9 MeV/c2 decaying to D+-. We also see an enhancement in the m(D*+-)-m(D*+) mass-difference spectrum and by examining D*+ decay-angle dependence, we see structure consistent with two states decaying to D*+-. We observe a lower-mass state, at mass (2428±3±2) MeV/c2 and width (23-6-4+8+10) MeV/c2, assuming that the higher-mass component is from the decay D**0(2461)D*+-. We present arguments for the spin-parity assignments of these states. We also report observation of candidate L=1 cs» state decaying to D*+Ks0. © 1990 The American Physical Society.