R Measurement around s=3.55GeV

QI XiangRong; HU HaiMing; LI XinHua; HUANG GuangShun; CHEN JiangChuan; HU Tao; JU Xin; LI Jin; MAO ZePu; XUE ShengTian; ZHENG ZhiPeng; ZHOU Li; ZHAO ZhengGuo

Chinese Physics C> 2000, Vol. 24> Issue(7) : 609-615

R Measurement around s=3.55GeV

Institute of High Energy Physics,CAS,Beijing 100039,China

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Abstract：
Using the data collected with Beijing Spectrometer (BES),we have measured the total cross section for e⁺e^－ annihilation into hadronic final states around center-of-mass energy 3.55 GeV. The values of R,σ (e⁺e^－→hadrons)/σ(e⁺e^－→μ⁺μ^－),are determined with smaller error than the previous result by a factor of two.

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QI XiangRong, HU HaiMing, LI XinHua, HUANG GuangShun, CHEN JiangChuan, HU Tao, JU Xin, LI Jin, MAO ZePu, XUE ShengTian, ZHENG ZhiPeng, ZHOU Li and ZHAO ZhengGuo. R Measurement around s=3.55GeV[J]. Chinese Physics C, 2000, 24(7): 609-615.

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Received: 1999-07-19
Revised: 1900-01-01

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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

R Measurement around s=3.55GeV

Corresponding author: QI XiangRong,

Institute of High Energy Physics,CAS,Beijing 100039,China

Received Date: 1999-07-19

Accepted Date: 1900-01-01

Available Online: 2000-07-05

Abstract: Using the data collected with Beijing Spectrometer (BES),we have measured the total cross section for e⁺e^－ annihilation into hadronic final states around center-of-mass energy 3.55 GeV. The values of R,σ (e⁺e^－→hadrons)/σ(e⁺e^－→μ⁺μ^－),are determined with smaller error than the previous result by a factor of two.

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R Measurement around s=3.55GeV

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通讯作者: 陈斌, bchen63@163.com

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