$P$ -wave charmed mesons in $e^{+} e^{-}$ annihilation

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/

c^{2}

and width

20_{- 12 - 10}^{+ 9 + 9}

MeV/

c^{2}

decaying to

D^{+} π^{-}

. We also see an enhancement in the

m (D^{* +} π^{-}) - m (D^{* +})

mass-difference spectrum and by examining

D^{* +}

decay-angle dependence, we see structure consistent with two states decaying to

D^{* +} π^{-}

. We observe a lower-mass state, at mass (2428±3±2) MeV/

c^{2}

and width (

23_{- 6 - 4}^{+ 8 + 10}

) MeV/

c^{2}

, assuming that the higher-mass component is from the decay

D^{* * 0} (2461) \to D^{* +} π^{-}

. We present arguments for the spin-parity assignments of these states. We also report observation of candidate

L = 1

c \bar{s}

state decaying to

D^{* +} K_{s}^{0}

This publication has 7 references indexed in Scilit:

P-wave charmed mesons ine+e−annihilation