Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-05-12
Phys.Lett. B568 (2003) 254-260
Physics
High Energy Physics
High Energy Physics - Phenomenology
Major revisions to include recent observation by CLEO of D_{sJ}(2463)^+ including change of title and additional radiative tra
Scientific paper
10.1016/j.physletb.2003.06.049
The Babar and CLEO collaborations have recently observed states decaying to D_s^+\pi^0 and D_s^{*+}\pi^0 respectively and suggest the possible explanation that they are the missing P-wave c\bar{s} states with J^P=0^+ and 1^+. In this note we compare the properties of the D_{sJ}^*(2317)^+ and D_{sJ}(2463)^+ states to those expected of the c\bar{s} D_{s0}^* and D_{s1} states. We expect the D_{s0}^* and D_{s1} with the reported masses to be extremely narrow, \Gamma \sim {\cal O}(10\hbox{keV}), with large branching ratios to D^*_s\gamma for the D_{s0}^* and to D^*_s\gamma and D_s\gamma for the D_{s1}. Crucial to this interpretation of the Babar and CLEO observations is the measurement of the radiative transitions. We note that it may be possible to observe the $D_{s1}(2536)$ in radiative transitions to the $D_s^*$.
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