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BESⅢ上τ轻子对产生阈附近衰变分支比测量的模拟研究

Monte Carlo Study of Branching Ratios Measurement at the τ-pair Production Threshold at BESⅢ

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【作者】 花春飞莫晓虎李玉晓边渐鸣曹国富曹学香陈申见邓子艳傅成栋高原宁何康林何苗黄彬黄性涛季晓斌李海波李卫东梁羽铁刘春秀刘怀民刘秋光刘锁马秋梅马想冒亚军毛泽普潘明华庞彩莹平荣刚秦亚红邱进发孙胜森孙永昭王纪科王亮亮文硕频伍灵慧谢宇广徐敏严亮尤郑昀俞国威苑长征袁野张长春张建勇张学尧张瑶郑阳恒朱永生朱志丽邹佳恒

【Author】 HUA Chun-fei1,2,MO Xiao-hu2,LI Yu-xiao1,BIAN Jian-ming2,3,CAO Guo-fu2,3,CAO Xue-xiang2;3,CHEN Shen-jian5,DENG Zi-yan2,FU Cheng-dong4;2,GAO Yuan-ning4,HE Kang-lin2,HE Miao2;3,HUANG Bin2,3,HUANG Xing-tao10,JI Xiao-bin2,LI Hai-bo2,LI Wei-dong2,LIANG Yu-tie6,LIU Chun-xiu2,LIU Huai-min2,LIU Qiu-guang2,3,LIU Suo7,MA Qiu-mei2,MA Xiang2,3,MAO Ya-jun6,MAO Ze-pu2,PAN Ming-hua8,PANG Cai-ying8,PING Rong-gang2,QIN Ya-hong1,QIU Jin-fa2,SUN Sheng-sen2,SUN Yong-zhao2,3,WANG Ji-ke2,3,WANG Liang-liang2,3,WEN Shuo-pin2,WU Ling-hui2,XIE Yu-guang2,3,XU Min9,YAN Liang2,3,YOU Zheng-yun6,YU Guo-wei2,YUAN Chang-zheng2,YUAN Ye2,ZHANG Bing-yun2,ZHANG Chang-chun2,ZHANG Jian-yong2,11,ZHANG Xue-yao10,ZHANG Yao2,ZHENG Yang-heng3,ZHU Yong-sheng2,ZHU Zhi-li8,ZOU Jia-heng10(1.Zhengzhou University,Zhengzhou 450001,China;2.Institute of High Energy Physics,CAS,Beijing 100049,China;3.Graduate School of Chinese Academy of Sciences,Beijing 100049,China;4.Tsinghua University,Beijing 100084,China;5.Nanjing University,Nanjing 210093,China;6.Peking University,Beijing 100871,China;7.Liaoning University,Shenyang 110036,China;8.Guangxi Normal University,Guilin 541004,China;9.Department of Modern Physics,University of Science and Technology of China,Hefei 230026,China;10.Shandong University,Jinan 250100,China;11.CCAST(World Laboratory),Beijing 100080,China)

【机构】 郑州大学中国科学院高能物理研究所中国科学院研究生院南京大学清华大学中国高等科技中心北京大学辽宁大学广西师范大学中国科学技术大学近代物理系山东大学

【摘要】 利用BESⅢ的离线软件系统模拟τ轻子对在其产生阈处衰变到包含eμ和eπ子的末态;借助粒子鉴别软件对衰变末态进行筛选,得到相应的探测效率及本底比率,由此估算出相应于特定统计误差精度要求的数据获取时间。

【Abstract】 The decays of τ lepton to eμ and eπ final states at the τ-pair production threshold are studied based on BESⅢ simulation system.The signal particles are selected with the help of the special particle identification software.Obtained are both selection efficiency and background proportion,by virtue of the former,the data taking time is estimated for the certain precision requirementon the branching ratio measurement.

【基金】 国家自然科学基金(10491300,10491303,10735080);中国科学院重大科研装备研制项目(H7292330S7);中国科学院百人计划(U-25,U-54,U-612)资助
  • 【文献出处】 核电子学与探测技术 ,Nuclear Electronics & Detection Technology , 编辑部邮箱 ,2009年05期
  • 【分类号】O571.3
  • 【下载频次】78
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