Eur. Phys. J. A (2005) 23: 129-133
https://doi.org/10.1140/epja/i2004-10069-9

P-wave charmonium decays into baryon and antibaryon pairs in quark pair creation model

¹ CCAST (World Lab.), P.O. Box 8730, 100080, Beijing, PRC
² Institute of High Energy Physics, Chinese Academy of Sciences, P.O. Box 918(4), 100039, Beijing, PRC
³ Institute of Theoretical Physics, Chinese Academy of Sciences, P.O. Box 2735, 100080, Beijing, PRC
⁴ Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, 730000, Lanzhou, PRC

^* e-mail: pingrg@mail.ihep.ac.en

Received: 9 August 2004
Accepted: 24 August 2004
Published online: 3 December 2004

Abstract

A simple quark pair creation model is introduced to study exclusive decays of χ_{{c_J}} into baryon-antibaryon pairs. With this simple model, some exclusive decay processes, for example, χ_{c0} → B¯ (B = Λ,Σ⁰,Ξ^-) are investigated and their decay widths are evaluated by inclusion of the properties of outgoing baryons, and the results show that the strengthened decay channels χ_{{c_J}} → Λ¯(J = 0, 2) are easily understood by considering only the color singlet contribution of P-wave charmonium.