【作者】
黄彬；
郑阳恒；
李卫东；
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；
花春飞；
黄性涛；
季晓斌；
李海波；
梁羽铁；
刘春秀；
刘怀民；
刘秋光；
刘锁；
刘英杰；
马秋梅；
马想；
冒亚军；
毛泽普；
莫晓虎；
潘明华；
庞彩莹；
平荣刚；
秦纲；
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；
朱永生；
朱志丽；
邹佳恒；
【Author】
HUANG Bin1,2;1) ZHENG Yang-Heng2;2) LI Wei-Dong1;3) BIAN Jian-Ming1,2 CAO Guo-Fu1,2 CAO Xue-Xiang1,2 CHEN Shen-Jian4 DENG Zi-Yan1 FU Cheng-Dong3,1 GAO Yuan-Ning3 HE Kang-Lin1) HE Miao1,2 HUA Chun-Fei5 HUANG Xing-Tao10 JI Xiao-Bin1 LI Hai-Bo1 LIANG Yu-Tie6 LIU Chun-Xiu1 LIU Huai-Min1 LIU Qiu-Guang1 LIU Suo7 LIU Ying-Jie1 MA Qiu-Mei1 MA Xiang1,2 MAO Ya-Jun6 MAO Ze-Pu MO Xiao-Hu1 PAN Ming-Hua8 PANG Cai-Ying8 PING Rong-Gang1 QIN Gang1,2 QIN Ya-Hong5 QIU Jin-Fa1 SUN Sheng-Sen1 SUN Yong-Zhao1,2 WANG Ji-Ke1,2 WANG Liang-Liang1,2 WEN Shuo-Pin WU Ling-Hui1 XIE Yu-Guang1,2 XU Min9 YAN Liang1,2 YOU Zheng-Yun6 YU Guo-Wei1 YUAN Chang-Zheng1 YUAN Ye1 ZHANG Chang-Chun1 ZHANG Jian-Yong1 ZHANG Xue-Yao10 ZHANG Yao1 ZHU Yong-Sheng1 ZHU Zhi-Li8 ZOU Jia-Heng10 1 (Institute of High Energy Physics, CAS, Beijing 100049, China) 2 (Graduate University of Chinese Academy of Sciences, Beijing 100049,China) 3 (Tsinghua University, Beijing 100084, China) 4 (Nanjing University, Nanjing 210093, China) 5 (Zhengzhou University, Zhengzhou 450001, 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)
【机构】
Institute of High Energy Physics, CAS；
Graduate University of Chinese Academy of Sciences；
Nanjing University；
Tsinghua University；
Zhengzhou University；
Shandong University；
Peking University；
Liaoning University；
Guangxi Normal University；
Department of Modern Physics, University of Science and Technology of China；
【摘要】 We established a method on measuring the D0-■ mixing parameter y for BESⅢ experiment at the BEPCⅡ e+e-collider. In this method, the doubly tagged ψ(3770) → D0■ events, with one D decays to CP-eigenstates and the other D decays semileptonically, are used to reconstruct the signals. Since this analysis requires good e/π separation, a likelihood approach, which combines the dE/dx, time of flight and the electromagnetic shower detectors information, is used for particle identification. We estimate the sensitivity of the measurement of y to be 0.007 based on a 20 fb-1 fully simulated MC sample.更多还原
【Abstract】 We established a method on measuring the D0-■ mixing parameter y for BESⅢ experiment at the BEPCⅡ e+e-collider. In this method, the doubly tagged ψ(3770) → D0■ events, with one D decays to CP-eigenstates and the other D decays semileptonically, are used to reconstruct the signals. Since this analysis requires good e/π separation, a likelihood approach, which combines the dE/dx, time of flight and the electromagnetic shower detectors information, is used for particle identification. We estimate the sensitivity of the measurement of y to be 0.007 based on a 20 fb-1 fully simulated MC sample.更多还原
【基金】 Supported by National Natural Science Foundation of China (10491300, 10491303, 10735080);Research and Development Project of Important Scientific Equipment of CAS (H7292330S7), 100 Talents Programme of CAS (U-25, U-54, U-612);Scientific Research Fund of GUCAS (110200M202)
