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

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; ZOU Jia-Heng

Chinese Physics C> 2010, Vol. 34> Issue(12) : 1866-1873

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

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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.

References

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WANG Yi-Fang.The Construction of the BESⅢ Experienment,arXiv:hep-ex/0701010v1[2] BEPC Ⅱ Preliminary Design Report.2002[3] BESⅢ Design Report.Interior Document in Institute of High Energy Physics,2004[4] LIU Qiu-Guang et al.Chinese Physics C(HEP NP),2008,32(07):565-571[5] Ohnishi Y.Track parametrization,Belle note #148[6] Tanaka J.Fast Tracker For the Drift Chamber,Belle note #222

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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.

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Received: 2010-03-09
Revised: 2010-06-12

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: JIA Lu-Kui,

Received Date: 2010-03-09

Accepted Date: 2010-06-12

Available Online: 2010-12-05

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

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