Measurement of Γee(J/ψ) with KEDR detector

被引：0
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作者：
V. V Anashin
V. M Aulchenko
E. M Baldin
A. K Barladyan
A. Y Barnyakov
M. Y Barnyakov
S. E Baru
I. V Bedny
A. E Blinov
V. E Blinov
A. V Bobrov
V. S Bobrovnikov
A. V Bogomyagkov
A. E Bondar
D. V Bondarev
A. R Buzykaev
S. I Eidelman
Y. M Glukhovchenko
V. V Gulevich
D. V Gusev
S. E Karnaev
G. V Karpov
S. V Karpov
T. A Kharlamova
V. A Kiselev
S. A Kononov
K. Y Kotov
E. A Kravchenko
V. F Kulikov
G. Y Kurkin
E. A Kuper
E. B Levichev
D. A Maksimov
V. M Malyshev
A. L Maslennikov
A. S Medvedko
O. I Meshkov
S. I Mishnev
I. I Morozov
N. Y Muchnoi
V. V Neufeld
S. A Nikitin
I. B Nikolaev
I. N Okunev
A. P Onuchin
S. B Oreshkin
I. O Orlov
A. A Osipov
S. V Peleganchuk
S. G Pivovarov
机构：
[1] Budker Institute of Nuclear Physics,
[2] Novosibirsk State University,undefined
[3] Novosibirsk State Technical University,undefined
来源：
Journal of High Energy Physics | / 2018卷
关键词：
e+-e- Experiments;
D O I：
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中图分类号：
学科分类号：
摘要：
The product of the electronic width of the J/ψ meson and the branching fractions of its decay to hadrons and electrons has been measured using the KEDR detector at the VEPP-4M e+e− collider. The obtained values are ΓeeJ/ψ=5.550±0.056±0.089keV,ΓeeJ/ψ·ℬhadronsJ/ψ=4.884±0.048±0.078keV,ΓeeJ/ψ·ℬeeJ/ψ=0.3331±0.0066±0.0040keV.\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \begin{array}{c}\hfill {\Gamma}_{ee}\left(J/\psi \right)=5.550\pm 0.056\pm 0.089\kern0.5em \mathrm{keV},\hfill \\ {}\hfill {\Gamma}_{ee}\left(J/\psi \right)\cdotp {\mathrm{\mathcal{B}}}_{\mathrm{hadrons}}\left(J/\psi \right)=4.884\pm 0.048\pm 0.078\kern0.5em \mathrm{keV},\hfill \\ {}\hfill {\Gamma}_{ee}\left(J/\psi \right)\cdotp {\mathrm{\mathcal{B}}}_{ee}\left(J/\psi \right)=0.3331\pm 0.0066\pm 0.0040\kern0.5em \mathrm{keV}.\hfill \end{array} $$\end{document}
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