Trigger efficiencies at BESⅢ

N. Berger; ZHU Kai; LIU Zhen-An; JIN Da-Peng; XU Hao; GONG Wen-Xuan; WANG Ke; CAO Guo-Fu

doi:10.1088/1674-1137/34/12/001

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《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 2010, Vol. 34> Issue(12) : 1779-1784 DOI: 10.1088/1674-1137/34/12/001

Trigger efficiencies at BESⅢ

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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⁺π^－J/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.

References

[1]

The BESⅢ collaboration.Design and Construction of the BESⅢ Detector,2009.0911.4960[2] LIU Z A.Preliminary Design of BES-Ⅲ Trigger System,Prepared for CHEP'01:Computing in High-Energy Physics and Nuclear.Beijing,China,3-7 Sep 2001[3] YU Z et al.HEP NP,1995,19:1062 (in Chinese)[4] HUANG Get al.HEP NP,2001,25:889 (in Chinese)[5] LIU Bet al.HEP NP,2001,25:1 (in Chinese)[6] SHI X et al.HEP NP,2004,28:982 (in Chinese)

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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

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Received: 2010-03-10
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沈阳化工大学材料科学与工程学院沈阳 110142

Trigger efficiencies at BESⅢ

Received Date: 2010-03-10
Accepted Date: 2010-04-12
Available Online: 2010-12-05

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⁺π^－J/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.