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

• Published in: Chinese physics C Vol. 34; no. 12; pp. 1866 - 1873
• Main Author: 贾卢魁 毛泽普 李卫东 曹国富 曹学香 邓子艳 何康林 刘春燕 刘怀民 刘秋光 马秋梅 马想 邱进发 田浩来 王纪科 伍灵慧 袁野 臧石磊 张长春 张雷 张瑶 朱凯 邹佳恒
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.12.2010; Institute of High Energy Physics,CAS,Beijing 100049,China; Purdue University,West Lafayette,IN 47907,USA%Institute of High Energy Physics,CAS,Beijing 100049,China%University of Colorado,Boulder,Clolorado 80309,USA%Nanjing University,Nanjing 210093,China; Graduate University of Chinese Academy of Sciences,Beijing 100049,China%Institute of High Energy Physics,CAS,Beijing 100049,China
• Subjects: 主漂移室; 低轨道; 北京谱仪; 噪音抑制; 数据调整; 物理分析; 蒙特卡罗数据; 跟踪方法; BESⅢ MDC; low transverse momentum; track reconstruction
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/34/12/014

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.