Study of low momentum track reconstruction for the BESIII main drift chamber

被引:7
|
作者
Jia Lu-Kui [1 ,2 ]
Mao Ze-Pu [1 ]
Li Wei-Dong [1 ]
Cao Guo-Fu [1 ]
Gao Xue-Xiang [1 ,2 ]
Deng Zi-Yan [1 ]
He Kang-Lin [1 ]
Liu Chun-Yan [1 ,2 ]
Liu Huai-Min [1 ]
Liu Qiu-Guang [1 ,3 ]
Ma Qiu-Mei [1 ]
Ma Xiang [1 ]
Qiu Jin-Fa [1 ]
Tian Hao-Lai [1 ,2 ]
Wang Ji-Ke [1 ]
Wu Ling-Hui [1 ]
Yuan Ye [1 ]
Zang Shi-Lei [5 ]
Zhang Chang-Chun [1 ]
Zhang Lei [4 ]
Zhang Yao [1 ]
Zhu Kai [1 ]
Zou Jia-Heng [1 ]
机构
[1] CAS, Inst High Energy Phys, Beijing 100049, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
[3] Purdue Univ, W Lafayette, IN 47907 USA
[4] Nanjing Univ, Nanjing 210093, Peoples R China
[5] Univ Colorado, Boulder, CO 80309 USA
基金
美国能源部; 中国国家自然科学基金;
关键词
BESIII MDC; low transverse momentum; track reconstruction;
D O I
10.1088/1674-1137/34/12/014
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
In order to overcome the difficulty brought by the circling charged tracks with transverse momentum less than 120 MeV in the BESIII Main Drift Chamber (MDC), a specialized method called TCurlFinder was developed. This tracking method focuses on the charged track reconstruction under 120 MeV and possesses a special mechanism to reject background noise hits. The performance of the package has been carefully checked and tuned by both Monte Carlo data and real data. The study shows that this tracking method could obviously enhance the reconstruction efficiency in the low transverse momentum region, providing physics analysis with more and reliable data.
引用
收藏
页码:1866 / 1873
页数:8
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