Trigger efficiencies at BESⅢ

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N. Berger, ZHU Kai, LIU Zhen-An, JIN Da-Peng, XU Hao, GONG Wen-Xuan, WANG Ke and CAO Guo-Fu. Trigger efficiencies at BESⅢ[J]. Chinese Physics C, 2010, 34(12): 1779-1784. doi: 10.1088/1674-1137/34/12/001
N. Berger, ZHU Kai, LIU Zhen-An, JIN Da-Peng, XU Hao, GONG Wen-Xuan, WANG Ke and CAO Guo-Fu. Trigger efficiencies at BESⅢ[J]. Chinese Physics C, 2010, 34(12): 1779-1784.  doi: 10.1088/1674-1137/34/12/001 shu
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Received: 2010-03-10
Revised: 2010-04-12
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Trigger efficiencies at BESⅢ

Abstract: 

Trigger efficiencies at BESⅢ were determined for both the J/ψ and ψ′ data taking of 2009. Both dedicated runs and physics datasets are used; efficiencies are presented for Bhabha-scattering events, generic hadronic decay events involving charged tracks, dimuon events and ψ′→π+πJ/ψ, J/ψ→l+l events. The efficiencies are found to lie well above 99% for all relevant physics cases, thus fulfilling the BESⅢ design specifications.

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