- Avery, P
- Besson, D
- Garren, L
- Yelton, J
- Bowcock, T
- Kinoshita, K
- Pipkin, FM
- Procario, M
- Wilson, R
- Wolinski, J
- Xiao, D
- Ammar, R
- Baringer, P
- Haas, P
- Lam, H
- Jawahery, A
- Park, CH
- Nelson, JK
- Perticone, D
- Poling, R
- Chen, W
- Dominick, J
- McIlwain, RL
- Miller, DH
- Ng, CR
- Schaffner, SF
- Shibata, EI
- Yao, W
- 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, IP
- 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
- et al.
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.