Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data
For high-energy <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula> mesons, the angle between the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Instruments |
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| Online Access: | https://www.mdpi.com/2410-390X/6/3/34 |
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| author | Ziyu Zhang Guang Zhao Shengsen Sun Qing Pu Chunxiu Liu Chunxu Yu Dong Liu Hang Qi Guangshun Huang Tobias Stockmanns Beijiang Liu Fei Wang Yitong Zhang Xiaoyan Shen |
| author_facet | Ziyu Zhang Guang Zhao Shengsen Sun Qing Pu Chunxiu Liu Chunxu Yu Dong Liu Hang Qi Guangshun Huang Tobias Stockmanns Beijiang Liu Fei Wang Yitong Zhang Xiaoyan Shen |
| author_sort | Ziyu Zhang |
| collection | DOAJ |
| description | For high-energy <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula> mesons, the angle between the two final-state photons decreases with the increase in the energy of the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula>, which enhances the probability of overlapping electromagnetic showers. The performance of the cluster splitting algorithm in the EMC reconstruction is crucial for the mass resolution measurement of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula> with high energy. The cluster splitting algorithm is based on the theoretical lateral distribution of the electromagnetic showers. A simple implementation of the lateral distribution can be described as a (multi-)exponential function. In a realistic electromagnetic calorimeter, considering the granularity of the detector, the measured energy in a cell is actually the integral of the theoretical energy deposition, which deviates from the exponential function. Based on the simulation of the barrel EMC in the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi mathvariant="normal">P</mi><mo>¯</mo></mover></semantics></math></inline-formula>ANDA experiment, a cluster splitting algorithm with a new lateral energy development function is developed. The energy resolution of overlapping showers with high energy has been improved. |
| first_indexed | 2024-03-09T23:37:41Z |
| format | Article |
| id | doaj.art-21553a649aad400783343a88300f788b |
| institution | Directory Open Access Journal |
| issn | 2410-390X |
| language | English |
| last_indexed | 2024-03-09T23:37:41Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Instruments |
| spelling | doaj.art-21553a649aad400783343a88300f788b2023-11-23T16:56:06ZengMDPI AGInstruments2410-390X2022-09-01633410.3390/instruments6030034Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC DataZiyu Zhang0Guang Zhao1Shengsen Sun2Qing Pu3Chunxiu Liu4Chunxu Yu5Dong Liu6Hang Qi7Guangshun Huang8Tobias Stockmanns9Beijiang Liu10Fei Wang11Yitong Zhang12Xiaoyan Shen13School of Physics, Nankai University, Tianjin 300071, ChinaInstitute of High Energy Physics, Beijing 100049, ChinaInstitute of High Energy Physics, Beijing 100049, ChinaSchool of Physics, Nankai University, Tianjin 300071, ChinaInstitute of High Energy Physics, Beijing 100049, ChinaSchool of Physics, Nankai University, Tianjin 300071, ChinaDepartment of Modern Physics, University of Science and Technology of China, Hefei 230026, ChinaDepartment of Modern Physics, University of Science and Technology of China, Hefei 230026, ChinaDepartment of Modern Physics, University of Science and Technology of China, Hefei 230026, ChinaForschungszentrum Jülich, Institut für Kernphysik, 52428 Jülich, GermanyInstitute of High Energy Physics, Beijing 100049, ChinaSchool of Nuclear Science and Technology, University of South China, Hengyang 421001, ChinaSchool of Physics, Liaoning University, Shenyang 110036, ChinaInstitute of High Energy Physics, Beijing 100049, ChinaFor high-energy <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula> mesons, the angle between the two final-state photons decreases with the increase in the energy of the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula>, which enhances the probability of overlapping electromagnetic showers. The performance of the cluster splitting algorithm in the EMC reconstruction is crucial for the mass resolution measurement of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>π</mi><mn>0</mn></msup></semantics></math></inline-formula> with high energy. The cluster splitting algorithm is based on the theoretical lateral distribution of the electromagnetic showers. A simple implementation of the lateral distribution can be described as a (multi-)exponential function. In a realistic electromagnetic calorimeter, considering the granularity of the detector, the measured energy in a cell is actually the integral of the theoretical energy deposition, which deviates from the exponential function. Based on the simulation of the barrel EMC in the <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mover><mi mathvariant="normal">P</mi><mo>¯</mo></mover></semantics></math></inline-formula>ANDA experiment, a cluster splitting algorithm with a new lateral energy development function is developed. The energy resolution of overlapping showers with high energy has been improved.https://www.mdpi.com/2410-390X/6/3/34calorimeterenergy reconstructioncluster splitting algorithm |
| spellingShingle | Ziyu Zhang Guang Zhao Shengsen Sun Qing Pu Chunxiu Liu Chunxu Yu Dong Liu Hang Qi Guangshun Huang Tobias Stockmanns Beijiang Liu Fei Wang Yitong Zhang Xiaoyan Shen Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data Instruments calorimeter energy reconstruction cluster splitting algorithm |
| title | Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data |
| title_full | Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data |
| title_fullStr | Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data |
| title_full_unstemmed | Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data |
| title_short | Performance Study of a New Cluster Splitting Algorithm for the Reconstruction of PANDA EMC Data |
| title_sort | performance study of a new cluster splitting algorithm for the reconstruction of panda emc data |
| topic | calorimeter energy reconstruction cluster splitting algorithm |
| url | https://www.mdpi.com/2410-390X/6/3/34 |
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