@article{e469f9a373554e11a65be7f0d908119a,
title = "Measurement of Γee×Bμμ for ψ(2S) meson",
abstract = "The product of the electronic width of the ψ(2S) meson and the branching fraction of its decay to the muon pair was measured in the e+e−→ψ(2S)→μ+μ− process using nine data sets corresponding to an integrated luminosity of about 6.5 pb−1 collected with the KEDR detector at the VEPP-4M electron–positron collider: Γee×Bμμ=19.3±0.3±0.5eV. Adding the previous KEDR results on hadronic and leptonic channels, the values of the ψ(2S) electronic width were obtained under two assumptions: either with the assumption of lepton universality Γee=2.279±0.015±0.042keV or without it, summing up hadronic and three independent leptonic channels Γee=2.282±0.015±0.042keV.",
keywords = "Branching fraction, Leptonic width, ψ(2S) meson, GENERATOR, MASSES, J/PSI-MESON, ANNIHILATION, KEDR DETECTOR, psi(2S) meson, MONTE-CARLO, WIDTHS, RADIATIVE-CORRECTIONS, LEPTON",
author = "{KEDR Collaboration} and Anashin, {V. V.} and Anchugov, {O. V.} and Aulchenko, {V. M.} and Baldin, {E. M.} and Baranov, {G. N.} and Barladyan, {A. K.} and Barnyakov, {A. Yu} and Barnyakov, {M. Yu} and Baru, {S. E.} and Basok, {I. Yu} and Batrakov, {A. M.} and Bekhtenev, {E. A.} and Blinov, {A. E.} and Blinov, {V. E.} and Bobrov, {A. V.} and Bobrovnikov, {V. S.} and Bogomyagkov, {A. V.} and Bondar, {A. E.} and Buzykaev, {A. R.} and Cheblakov, {P. B.} and Dorohov, {V. L.} and Eidelman, {S. I.} and Grigoriev, {D. N.} and Glukhov, {S. A.} and Karnaev, {S. E.} and Karpov, {G. V.} and Karpov, {S. V.} and Karukina, {K. Yu} and Kashtankin, {D. P.} and Kononov, {S. A.} and Kulikov, {V. F.} and Maksimov, {D. A.} and Maslennikov, {A. L.} and Meshkov, {O. I.} and Morozov, {I. I.} and Muchnoi, {N. Yu} and Nikolaev, {I. B.} and Onuchin, {A. P.} and Prisekin, {V. G.} and Shamov, {A. G.} and Shwartz, {B. A.} and Sokolov, {A. V.} and Starostina, {E. V.} and Talyshev, {A. A.} and Tayursky, {V. A.} and Telnov, {V. I.} and Tikhonov, {Yu A.} and Todyshev, {K. Yu} and Zhilich, {V. N.} and Zhulanov, {V. V.}",
note = "Publisher Copyright: {\textcopyright} 2018 The Author(s) Copyright: Copyright 2018 Elsevier B.V., All rights reserved.",
year = "2018",
month = jun,
day = "10",
doi = "10.1016/j.physletb.2018.03.079",
language = "English",
volume = "781",
pages = "174--181",
journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",
issn = "0370-2693",
publisher = "Elsevier",
}