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JIA Lu-Kui, MAO Ze-Pu, LI Wei-Dong, CAO Guo-Fu, CAO Xue-Xiang, DENG Zi-Yan, HE Kang-Lin, LIU Chun-Yan, LIU Huai-Min, LIU Qiu-Guang, MA Qiu-Mei, MA Xiang, QIU Jin-Fa, TIAN Hao-Lai, WANG Ji-Ke, WU Ling-Hui, YUAN Ye, ZANG Shi-Lei, ZHANG Chang-Chun, ZHANG Lei, ZHANG Yao, ZHU Kai and ZOU Jia-Heng. Study of low momentum track reconstruction for the BESⅢ main drift chamber[J]. Chinese Physics C, 2010, 34(12): 1866-1873.
JIA Lu-Kui, MAO Ze-Pu, LI Wei-Dong, CAO Guo-Fu, CAO Xue-Xiang, DENG Zi-Yan, HE Kang-Lin, LIU Chun-Yan, LIU Huai-Min, LIU Qiu-Guang, MA Qiu-Mei, MA Xiang, QIU Jin-Fa, TIAN Hao-Lai, WANG Ji-Ke, WU Ling-Hui, YUAN Ye, ZANG Shi-Lei, ZHANG Chang-Chun, ZHANG Lei, ZHANG Yao, ZHU Kai and ZOU Jia-Heng. Study of low momentum track reconstruction for the BESⅢ main drift chamber[J]. Chinese Physics C, 2010, 34(12): 1866-1873. shu
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Received: 2010-03-09
Revised: 2010-06-12
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Study of low momentum track reconstruction for the BESⅢ main drift chamber

    Corresponding author: JIA Lu-Kui,

Abstract: 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.

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