Chinese Physics C > 2004, Vol. 28 > Issue(9): 977-981

Research on Identification of μ,π with BESⅢ μ Ιdentifier

Department of Technical Physics,School of Physics,Peking University,Beijing 100871,China2 Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
The final states created by e+e- annihilation at τ-charm energy region are simulated with PYTHIA5.7,and the resultant inclusive muon production cross sections and momentum distributions are obtained.The muon identifier of BESⅢ detector is fully simulated with Geant3.21.For the simulated events containing muons and pions with momentum greater than 0.5GeV/c,the BP neural network and Fisher discriminant method are used for muon/pion identification.BP neural network performs better than Fisher discriminant method.With the same muon efficiency of 96%,the misidentification of pion by BP neural network is 9.4%,in comparison with that of 17.1% by Fisher method.

References

[1]

. YUAN Chang-Zheng et al . HEP NP ,2002 ,26 (12) :1—8 (in Chinese)(苑长征等. 高能物理与核物理,2002 ,26 (12) :1 —8)2. LI Wei-Guo. Overview of BEPC Ⅱ/ BES Ⅲ Project ,Talk Given on BES Ⅲ International Review ,Sep. 16 —28 ,2002 ,Beijing3. MAO Ya-Jun et al . Atomic Energy Science and Technology ,1998 , 32(2) :146 —151 (in Chinese)(冒亚军等. 原子能科学技术,1998 ,32 (2) :146—151)4. Mjahed M. Nucl . Instrum. and Methods ,2000 ,A449 :602—6085. Horn D. Nucl . Instrum. and Methods ,1997 ,A389 :381—3876. Eide A et al . Nucl . Instrum. and Methods ,1996 ,A368 :855—8587. ZHANG Zi-Ping et al . HEPNP ,1997 ,21(4) :297—303 (in Chinese)(张子平等·高能物理与核物理,1997 ,21 (4) :297—303)8. Hagan M T et al . Neural Network Design. U. S. A:PWS Publishing Com2pany ,1996 ,197—257

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YOU Zheng-Yun, MAO Ya-Jun and ZHANG Jia-Wen. Research on Identification of μ,π with BESⅢ μ Ιdentifier[J]. Chinese Physics C, 2004, 28(9): 977-981.

YOU Zheng-Yun, MAO Ya-Jun and ZHANG Jia-Wen. Research on Identification of μ,π with BESⅢ μ Ιdentifier[J]. Chinese Physics C, 2004, 28(9): 977-981. shu

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Received: 2004-01-13
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Research on Identification of μ,π with BESⅢ μ Ιdentifier

Corresponding author:YOU Zheng-Yun,

Department of Technical Physics,School of Physics,Peking University,Beijing 100871,China2 Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date:2004-01-13
Accepted Date:1900-01-01
Available Online:2004-09-05

Abstract:The final states created by e+e- annihilation at τ-charm energy region are simulated with PYTHIA5.7,and the resultant inclusive muon production cross sections and momentum distributions are obtained.The muon identifier of BESⅢ detector is fully simulated with Geant3.21.For the simulated events containing muons and pions with momentum greater than 0.5GeV/c,the BP neural network and Fisher discriminant method are used for muon/pion identification.BP neural network performs better than Fisher discriminant method.With the same muon efficiency of 96%,the misidentification of pion by BP neural network is 9.4%,in comparison with that of 17.1% by Fisher method.