| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1851702 | Physics Letters B | 2014 | 5 Pages |
Abstract
The ratio of the electron and muon widths of the J/ψJ/ψ meson has been measured using direct J/ψJ/ψ decays in the KEDR experiment at the VEPP-4M electron–positron collider. The resultΓe+e−(J/ψ)/Γμ+μ−(J/ψ)=1.0022±0.0044±0.0048(0.65%) is in good agreement with the lepton universality. The experience collected during this analysis will be used for J/ψJ/ψ lepton width determination with up to 1% accuracy.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
V.M. Aulchenko, E.M. Baldin, A.K. Barladyan, A.Yu. Barnyakov, M.Yu. Barnyakov, S.E. Baru, I.Yu. Basok, A.M. Batrakov, A.E. Blinov, V.E. Blinov, A.V. Bobrov, V.S. Bobrovnikov, A.V. Bogomyagkov, A.E. Bondar, A.R. Buzykaev, S.I. Eidelman, D.N. Grigoriev,