ar X iv : h ep - p h / 97 09 39 3 v 1 1 8 Se p 19 97 1 Exclusive charmonium decays WU B 97 - 25
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چکیده
The role of power corrections and higher Fock-state contributions to exclusive charmonium decays will be discussed. It will be argued that the J/ψ (ψ′) decays into baryon-antibaryon pairs are dominated by the valence Fock-state contributions. P -wave charmonium decays, on the other hand, receive strong contributions from the ccg Fock states since the valence Fock-state contributions are suppressed in these reactions. Numerical results for J/ψ(ψ′)→ BB decay widths will be also presented and compared to data.
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تاریخ انتشار 1997