• [1]

    PDG, Review of Particle Properties, Phys. Rev., D50(19941)4 04.[2] BES collab., Nucl. Instr. Method, A344(1994)319.[3] BES合作组, 高能物理与核物理, 21(1997)97[4] 吴济民、赵佩英, 高能物理与核物理, 17(1993)379[5] PDG, 1995 Partial Update to the Review of Particle Properties.[6] Blocker et al., Phys Lett. 1098(1982)119.[7] Adler et al, Phys Rev Lett., 59(1987)1527.