A method for the separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter

LIANG Song; TAO Jun-Quan; SHEN Yu-Qiao; FAN Jia-Wei; XIAO Hong; CHEN Guo-Ming; CHEN He-Sheng; BIAN Jian-Guo; CHEN Ye; LI Zu-Hao; MENG Xiang-Wei; TANG Zhi-Cheng; WANG Xian-You; WANG Zheng; XU Ming; XU Wei-Wei; YAN Qi; YANG Min; ZHANG Cheng; ZHU Shi-Hai

doi:10.1088/1674-1137/37/9/096202

Chinese Physics C> 2013, Vol. 37> Issue(9) : 096202 DOI: 10.1088/1674-1137/37/9/096202

A method for the separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter

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The separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter is very important for the reconstructions of some particles with hadronic decays, for example the tau reconstruction in the searches for the Standard Model and supersymmetric Higgs bosons at the LHC. In this paper, a method combining the shower cluster in an electromagnetic calorimeter and the parametric formula for hadron showers, was developed to separate the overlapped showers between charged hadron and neutral hadron. Taking the hadronic decay containing one charged pion and one neutral pion in the final status of tau for example, satisfied results of the separation of the overlapped showers, the reconstructions of the energy and positions of the hadrons were obtained. An improved result for the tau reconstruction with this decay model can be also achieved after the application of the proposed method.

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LIANG Song, TAO Jun-Quan, SHEN Yu-Qiao, FAN Jia-Wei, XIAO Hong, CHEN Guo-Ming, CHEN He-Sheng, BIAN Jian-Guo, CHEN Ye, LI Zu-Hao, MENG Xiang-Wei, TANG Zhi-Cheng, WANG Xian-You, WANG Zheng, XU Ming, XU Wei-Wei, YAN Qi, YANG Min, ZHANG Cheng and ZHU Shi-Hai. A method for the separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter[J]. Chinese Physics C, 2013, 37(9): 096202. doi: 10.1088/1674-1137/37/9/096202

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Received: 2012-11-28
Revised: 2013-01-30

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A method for the separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter

Corresponding author: TAO Jun-Quan,

Received Date: 2012-11-28

Accepted Date: 2013-01-30

Available Online: 2013-09-05

Abstract: The separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter is very important for the reconstructions of some particles with hadronic decays, for example the tau reconstruction in the searches for the Standard Model and supersymmetric Higgs bosons at the LHC. In this paper, a method combining the shower cluster in an electromagnetic calorimeter and the parametric formula for hadron showers, was developed to separate the overlapped showers between charged hadron and neutral hadron. Taking the hadronic decay containing one charged pion and one neutral pion in the final status of tau for example, satisfied results of the separation of the overlapped showers, the reconstructions of the energy and positions of the hadrons were obtained. An improved result for the tau reconstruction with this decay model can be also achieved after the application of the proposed method.

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A method for the separation and reconstructions of charged hadron and neutral hadron from their overlapped showers in an electromagnetic calorimeter

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