open access

https://hdl.handle.net/2115/43812

A Partial Width Calculation of OZI-Allowed Charmonium Decays in a Coupled Channel Framework

英語

2009-09

Springer Wien

Few-Body Systems

46(3)

189-198

OZI-allowed partial decay widths, masses, and total decay width of charmonium states are studied in a nonrelativistic coupled-channel framework based on microscopic effective quark interactions. With the help of the complex scale transformation, the coupled channel equation is easily solved under the proper boundary condition for resonances. The obtained result as a whole is very successful and encouraging for the traditional charmonium states including ψ(4040) whose features of mass and partial decay widths have been argued historically. The coupling mechanisms of these states are investigated by reducing artificially the channel coupling strengths little by little and finally turning the coupling off. The situations turn out to be quite different from what we would have naively supposed. Other solutions than the traditional charmonium states were obatined at the same time. Some of them are discussed in relation with new particles observed recently.

学術雑誌論文

Accepted Manuscript

The original publication is available at www.springerlink.com

0177-7963