Measurement of R_uds and R between 3.12 and 3.72 GeV at the KEDR detector

2015/10/31 by V. V. Anashin, V. M. Aulchenko, E. M. Baldin +75 · 1 citation
Physics and Astronomy · #hep-ex

paper · pdf · doi:10.1016/j.physletb.2015.12.059

published as Phys. Lett. B 753 (2016) 533-541

arxiv created 2015/11/23 · arxiv updated 2016/01/12

Abstract

Using the KEDR detector at the VEPP-4M e⁺e^- collider, we have measured the values of R_uds and R at seven points of the center-of-mass energy between 3.12 and 3.72 GeV. The total achieved accuracy is about or better than 3.3% at most of energy points with a systematic uncertainty of about 2.1%. At the moment it is the most accurate measurement of R(s) in this energy range.

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• Precise measurement of Ruds and R between 1.84 and 3.72 GeV at the KEDR detector

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