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

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Title: A Partial Width Calculation of OZI-Allowed Charmonium Decays in a Coupled Channel Framework
Authors: Sakai, M. Browse this author
Matsuda, Y. Browse this author
Hirano, M. Browse this author
Kato, K. Browse this author →KAKEN DB
Issue Date: Sep-2009
Publisher: Springer Wien
Journal Title: Few-Body Systems
Volume: 46
Issue: 3
Start Page: 189
End Page: 198
Publisher DOI: 10.1007/s00601-009-0060-5
Abstract: 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.
Rights: The original publication is available at
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 加藤 幾芳

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