Ping, RG , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.
部门归属:
CCAST, World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China
英文摘要:
A quark pair creation model is introduced to study the chi(cJ) exclusive decays into baryon-antibaryon pairs. The decay widths for processes chi(cJ) --> B (B) over bar (J = 0, 2; B = A, Sigma(0), Xi(-)) 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 chi(cJ) (J = 0, 2) decay into A (A) over bar pair with a larger branching ratio than into pp pair.
