https://doi.org/10.1140/epjc/s10052-007-0221-y
Regular Article - Theoretical Physics
DsJ(2860) and DsJ(2715)
Department of Physics, Peking University, Beijing, 100871, P.R. China
* e-mail: liuxiang726@mail.nankai.edu.cn
Received:
1
October
2006
Revised:
9
January
2007
Published online:
6
March
2007
Recently the Babar Collaboration reported a new cs̄ state, DsJ(2860), and the Belle Collaboration observed DsJ(2715). We investigate the strong decays of the excited cs̄ states using the 3 P 0 model. After comparing the theoretical decay widths and decay patterns with the available experimental data, we are inclined to conclude that: (1) DsJ(2715) is probably the 1-(13 D 1) cs̄ state, although the 1-(23 S 1) assignment is not completely excluded; (2) DsJ(2860) seems unlikely to be the 1-(23 S 1) and 1-(13 D 1) candidate; (3) to consider DsJ(2860) either as a 0+(23 P 0) or as a 3-(13 D 3) cs̄ state is consistent with the experimental data; (4) the experimental search of DsJ(2860) in the channels Dsη, DK*, D*K and Ds *η will be crucial to distinguish the above two possibilities.
© Springer-Verlag Berlin Heidelberg, 2007