• [1]

    . RONG Gang et al. HEPNP, 2001,25:154—159(in Chinese)(荣刚等.高能物理与核物理,2001,25:154—159)2. BAI Jing-Zhi et al (BES Collaboration).N. I. M.,2001,A458:627—637 3. ZHU Yong-Sheng et al. Probability and Statistics in Experimental Physics. Beijing:Science Publisher,1991(in Chinese)(朱永生等.实验物理中的概率与统计.北京:科学出版社,1991)4. BAI Jing-Zhi et al (BES Collaboration).N. I. M.,1994,A344:319