Applying the Kalman filter particle method to strange and open charm hadron reconstruction in the STAR experiment

作     者：Xin-Yue Ju Yue-Hang Leung Sooraj Radhakrishnann Petr Chaloupka Xin Dong Yury Fisyak Pavol Federic Ivan Kisel Hong-Wei Ke Michal Kocan Spyridon Margetis Ai-Hong Tang Iouri Vassiliev Yi-Fei Zhang Xiang-Lei Zhu Maksym Zyzak Xin-Yue Ju;Yue-Hang Leung;Sooraj Radhakrishnann;Petr Chaloupka;Xin Dong;Yury Fisyak;Pavol Federic;Ivan Kisel;Hong-Wei Ke;Michal Kocan;Spyridon Margetis;Ai-Hong Tang;louri Vassiliev;Yi-Fei Zhang;Xiang-Lei Zhu;Maksym Zyzak

作者机构：University of Science and Technology of ChinaHefei 230026China Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA University of Heidelberg69120 HeidelbergGermany Kent State UniversityKentOH 44242USA Czech Technical University in PraguePragueCzech Republic Brookhaven National LaboratoryUptonNY 11973USA Nuclear Physics Institute of the Czech Academy of SciencesPragueCzech Republic Goethe-Universitat FrankfurtFrankfurt am MainGermany Frankfurt Institute for Advanced StudiesFrankfurt am MainGermany GSI Helmholtzzentrum für Schwerionenforschung GmbHDarmstadtGermany Tsinghua UniversityBeijing 100084China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2023年第34卷第10期

页      面：148-157页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 11890712 and 12061141008) the National Key R&D Program of China (Nos. 2018YFE0104700 and 2018YFE0205200) supported in part by the Offices of NP and HEP within the U.S. DOE Office of Science Yue-Hang Leung was partially supported by the GSI-Heidelberg cooperation contract 

主　　题：Heavy-ion collisions Secondary vertex finding Kalman filter 

摘      要：We applied KF Particle, a Kalman Filter package for secondary vertex finding and fitting, to strange and open charm hadron reconstruction in heavy-ion collisions in the STAR experiment. Compared to the conventional helix swimming method used in STAR, the KF Particle method considerably improved the reconstructed Λ, Ω, and D~0 significance. In addition, the Monte Carlo simulation with STAR detector responses could adequately reproduce the topological variable distributions reconstructed in real data using the KF Particle method, thereby retaining substantial control of the reconstruction efficiency uncertainties for strange and open charm hadron measurements in heavy-ion collisions.