Simulation study of BESIII with stitched CMOS pixel detector using ACTS

分类： 物理学 >> 核物理学 提交时间： 2023-12-13

Yi Liu Xiaocong Ai Guangyan Xiao Yaxuan Li Linghui Wu Liangliang Wang Jianing Dong Mingyi Dong Qinglin Geng Min Luo Yan Niu Anqing Wang Chenxu Wang Meng Wang Lei Zhang Liang Zhang Ruikai Zhang Yao Zhang Minggang Zhao Yang Zhou

摘要： The reconstruction of the tracks of charged particles with high precision is crucial for HEP experiments toachieve their physics goals. The BESIII drift chamber, which is used as the tracking detector of the BESIIIexperiment, has suffered from aging effects resulting in degraded tracking performance after operation for ap-proximately 15 years. To preserve and enhance the tracking performance of BESIII, one of the proposals is toadd one layer of a thin cylindrical CMOS pixel sensor based on state-of-the-art stitching technology betweenthe beam pipe and the drift chamber. The improvement in the tracking performance of BESIII with such anadditional pixel detector compared to that with only the existing drift chamber was studied using the moderncommon tracking software ACTS , which provides a set of detector-agnostic and highly performant trackingalgorithms that h

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