Communications in Theoretical Physics

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χcJ Decays into B\bar B in Quark-Pair Creation Model

PING Rong-Gang1,2 and JIANG Huan-Qing1,2,3,4   


  1. 1 CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, China
    2 Institute of High Energy Physics, the Chinese Academy of Sciences, P.O. Box 918(4), Beijing 100039, China
    3 Institute of Theoretical Physics, the Chinese Academy of Sciences, P.O. Box 2735, Beijing 100080, China
    4 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000, China
  • Received: 2003-06-10 Revised: 2003-07-22 Published: 2004-02-15

Abstract: A quark pair creation model is introduced to study the χcJ exclusive decays into baryon-antibaryon pairs. The decay widths for processes χcJ→B\bar B (J=0,2;B=Λ,Σ0, Ξ-) are evaluated phenomenologically with an explicit inclusion of the properties for outgoing baryons described by wave functions in the naive quark model. The results show that states χcJ (J=0,2) decay into Λ\bar Λ pair with a larger branching ratio than into p\bar p pair.

Key words: baryon, quark-pair creation model

PACS numbers: 

  • 13.25.Gv