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arxiv: 1610.02827 · v2 · pith:4YDEJAS6new · submitted 2016-10-10 · ✦ hep-ex

Measurement of R between 1.84 and 3.05 GeV at the KEDR detector

classification ✦ hep-ex
keywords detectorenergykedrpointsaccuracyachievedbettercenter-of-mass
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Using the KEDR detector at the VEPP-4M $e^+e^-$ collider, we have determined the values of $R$ at thirteen points of the center-of-mass energy between 1.84 and 3.05 GeV. The achieved accuracy is about or better than $3.9\%$ at most of the energy points with a systematic uncertainty less than $2.4\%$.

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