Efficiency Correction in the Branching Fraction Determination of ψ′Hadronic Decays

WANG Wen-Feng; ZHU Yong-Sheng; ZHANG Xue-Yao

Chinese Physics C> 2003, Vol. 27> Issue(2) : 89-94

Efficiency Correction in the Branching Fraction Determination of ψ′Hadronic Decays

Institute of High Energy Physics, CAS, Beijing 100039, China2 Department of Physics, Shandong University, Ji′nan 250100, China

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Abstract：
The detection efficiency corrections for the particle identification and kinematic fit selection criteria are investigated for the branching fraction measurements in ψ′decays into ωπ⁺π^－, b₁π,ωf₂(1270), ωK⁺K^－, ωp, φπ⁺π^－, φf₀(980),φK⁺K^－, φp final states using 4×10⁶ψ′data sample collected at BEPC/BES. Based on the corrected efficiencies, the preliminary results of these decay channels have been obtained, and the "12%" rule predicted by perturbative QCD theory has been tested.

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WANG Wen-Feng, ZHU Yong-Sheng and ZHANG Xue-Yao. Efficiency Correction in the Branching Fraction Determination of ψ′Hadronic Decays[J]. Chinese Physics C, 2003, 27(2): 89-94.

WANG Wen-Feng, ZHU Yong-Sheng and ZHANG Xue-Yao. Efficiency Correction in the Branching Fraction Determination of ψ′Hadronic Decays[J]. Chinese Physics C, 2003, 27(2): 89-94. shu

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Received: 2002-04-12
Revised: 1900-01-01

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