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1. Measurement of Γee×Bμμ for ψ(2S) meson

Author

E.V. Starostina, G.V. Karpov, V.L. Dorohov, A.I. Vorobiov, Andrey Sokolov, G.N. Baranov, A.G. Tribendis, A. E. Blinov, A.A. Osipov, S.I. Eidelman, B.A. Shwartz, Tatyana Kharlamova, V.G. Prisekin, Vladimir Zhulanov, S.E. Baru, G.Ya. Kurkin, A.K. Barladyan, M.Yu. Barnyakov, A.M. Batrakov, A.N. Zhuravlev, I.V. Ovtin, K.Yu. Kotov, O.V. Anchugov, A. P. Onuchin, K. Yu. Todyshev, D.N. Grigoriev, I.I. Morozov, V.V. Anashin, V. M. Malyshev, D.A. Shvedov, I.N. Okunev, D.P. Kashtankin, I.A. Morozov, A.Yu. Barnyakov, E. A. Simonov, A.N. Skrinsky, N. Yu. Muchnoi, S.A. Nikitin, V. Kudryavtsev, Valery I. Telnov, A.E. Bondar, Evgenii Baldin, V.V. Kolmogorov, Alexey Buzykaev, Evgeny Levichev, Yu. A. Tikhonov, Dmitry Shatilov, Yu. V. Usov, Alexey Talyshev, S. A. Glukhov, A.A. Krasnov, A.M. Sukharev, I. B. Nikolaev, V.F. Kulikov, A.A. Zhukov, E.A. Kuper, Sergey Sinyatkin, Vladimir Blinov, Sergey Peleganchuk, Pavel Piminov, V.A. Tayursky, S. I. Mishnev, G.A. Savinov, S.G. Pivovarov, A.G. Shamov, S.B. Oreshkin, D.P. Sukhanov, I.Yu. Basok, A.V. Bogomyagkov, I. A. Kuyanov, V.M. Aulchenko, V. S. Bobrovnikov, K.Yu. Karukina, V.N. Zhilich, Oleg Meshkov, S.A. Kononov, G.M. Tumaikin, S.V. Karpov, V. A. Kiselev, E. A. Kravchenko, V. V. Petrov, E.A. Bekhtenev, Olga Rezanova, D.A. Maksimov, P.B. Cheblakov, A. Bobrov, A.A. Ruban, Sergey Karnaev, and Alexey Maslennikov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, 01 natural sciences, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Lepton
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: Γ e e × B μ μ = 19.3 ± 0.3 ± 0.5 eV . 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 Γ e e = 2.279 ± 0.015 ± 0.042 keV or without it, summing up hadronic and three independent leptonic channels Γ e e = 2.282 ± 0.015 ± 0.042 keV .

Published
2018
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2. Measurement of Γee×Bμμ for ψ(2S) meson

Author

V.V. Anashin, O.V. Anchugov, V.M. Aulchenko, E.M. Baldin, G.N. Baranov, A.K. Barladyan, A.Yu. Barnyakov, M.Yu. Barnyakov, S.E. Baru, I.Yu. Basok, A.M. Batrakov, E.A. Bekhtenev, A.E. Blinov, V.E. Blinov, A.V. Bobrov, V.S. Bobrovnikov, A.V. Bogomyagkov, A.E. Bondar, A.R. Buzykaev, P.B. Cheblakov, V.L. Dorohov, S.I. Eidelman, D.N. Grigoriev, S.A. Glukhov, S.E. Karnaev, G.V. Karpov, S.V. Karpov, K.Yu. Karukina, D.P. Kashtankin, T.A. Kharlamova, V.A. Kiselev, V.V. Kolmogorov, S.A. Kononov, K.Yu. Kotov, A.A. Krasnov, E.A. Kravchenko, V.N. Kudryavtsev, V.F. Kulikov, G.Ya. Kurkin, I.A. Kuyanov, E.A. Kuper, E.B. Levichev, D.A. Maksimov, V.M. Malyshev, A.L. Maslennikov, O.I. Meshkov, S.I. Mishnev, I.A. Morozov, I.I. Morozov, N.Yu. Muchnoi, S.A. Nikitin, I.B. Nikolaev, I.N. Okunev, A.P. Onuchin, S.B. Oreshkin, A.A. Osipov, I.V. Ovtin, S.V. Peleganchuk, S.G. Pivovarov, P.A. Piminov, V.V. Petrov, V.G. Prisekin, O.L. Rezanova, A.A. Ruban, G.A. Savinov, A.G. Shamov, D.N. Shatilov, D.A. Shvedov, B.A. Shwartz, E.A. Simonov, S.V. Sinyatkin, A.N. Skrinsky, A.V. Sokolov, D.P. Sukhanov, A.M. Sukharev, E.V. Starostina, A.A. Talyshev, V.A. Tayursky, V.I. Telnov, Yu.A. Tikhonov, K.Yu. Todyshev, A.G. Tribendis, G.M. Tumaikin, Yu.V. Usov, A.I. Vorobiov, V.N. Zhilich, A.A. Zhukov, V.V. Zhulanov, and A.N. Zhuravlev

Subjects
High Energy Physics::Phenomenology, High Energy Physics::Experiment, lcsh:Physics, lcsh:QC1-999
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 universalityΓee=2.279±0.015±0.042keV or without it, summing up hadronic and three independent leptonic channelsΓee=2.282±0.015±0.042keV. Keywords: ψ(2S) meson, Leptonic width, Branching fraction

Published
2018

3. Measurement of Γee(J/ψ) with KEDR detector

Author

K. Y. Kotov, E.A. Kuper, Sergey Peleganchuk, E.V. Starostina, I.N. Okunev, V.V. Neufeld, A. Bobrov, V.A. Tayursky, V. S. Bobrovnikov, Andrey Sokolov, I. O. Orlov, Tatyana Kharlamova, S.A. Kononov, Anton Poluektov, Sergey Karnaev, G.A. Savinov, I.I. Morozov, V. V. Petrov, S.G. Pivovarov, A.G. Shamov, Alexey Talyshev, A.M. Sukharev, I. B. Nikolaev, S.V. Karpov, Yu.M. Glukhovchenko, Victor Smaluk, Dmitry Shatilov, S. I. Mishnev, E. A. Kravchenko, Alexey Maslennikov, V.K. Sandyrev, E. A. Simonov, A. E. Blinov, S.A. Nikitin, I. N. Popkov, A.A. Ruban, V. A. Kiselev, A.N. Skrinsky, A.E. Bondar, Olga Rezanova, A.A. Osipov, S.I. Eidelman, Yu I. Skovpen, Evgenii Baldin, Alexey Buzykaev, B.A. Shwartz, S.B. Oreshkin, Valery I. Telnov, Vladimir Blinov, A.N. Zhuravlev, A. S. Medvedko, D.V. Bondarev, Yury Tikhonov, V. M. Malyshev, Vladimir Zhulanov, N. Y. Muchnoi, G. Y. Kurkin, D.A. Maksimov, G.V. Karpov, V.F. Kulikov, Sergey Sinyatkin, A.I. Vorobiov, A.K. Barladyan, Pavel Piminov, M. Y. Barnyakov, V.M. Aulchenko, V.V. Anashin, I. Bedny, Alexander Barnyakov, G.M. Tumaikin, A.V. Bogomyagkov, Yu. V. Usov, Evgeny Levichev, V.G. Prisekin, S.E. Baru, V.N. Zhilich, Oleg Meshkov, K. Y. Todyshev, A. P. Onuchin, V.V. Gulevich, A. N. Yushkov, and D. V. Gusev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, e+-e- Experiments, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Hadron, 01 natural sciences, Product (mathematics), 0103 physical sciences, lcsh:QC770-798, High Energy Physics::Experiment, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics
Abstract

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 $$ \begin{array}{c}\hfill {\Gamma}_{ee}\left(J/\psi \right)=5.550\pm 0.056\pm 0.089\kern0.5em \mathrm{keV},\hfill \\ {}\hfill {\Gamma}_{ee}\left(J/\psi \right)\cdotp {\mathrm{\mathcal{B}}}_{\mathrm{hadrons}}\left(J/\psi \right)=4.884\pm 0.048\pm 0.078\kern0.5em \mathrm{keV},\hfill \\ {}\hfill {\Gamma}_{ee}\left(J/\psi \right)\cdotp {\mathrm{\mathcal{B}}}_{ee}\left(J/\psi \right)=0.3331\pm 0.0066\pm 0.0040\kern0.5em \mathrm{keV}.\hfill \end{array} $$ Γ e e J / ψ = 5.550 ± 0.056 ± 0.089 keV , Γ e e J / ψ · ℬ hadrons J / ψ = 4.884 ± 0.048 ± 0.078 keV , Γ e e J / ψ · ℬ e e J / ψ = 0.3331 ± 0.0066 ± 0.0040 keV . The uncertainties shown are statistical and systematic, respectively. Using the result presented and the world-average value of the electronic branching fraction, one obtains the total width of the J/ψ meson: $$ \Gamma =92.94\pm 1.83\kern0.5em \mathrm{keV}. $$ Γ = 92.94 ± 1.83 keV . These results are consistent with the previous experiments.

Published
2018

4. Measurement of the ratio of the lepton widths Γee/Γμμ for the J/ψ meson

Author

Andrey Sokolov, E. A. Simonov, S.A. Nikitin, Anton Poluektov, I.Yu. Basok, S.E. Baru, I.N. Okunev, S.G. Pivovarov, V.V. Gulevich, B.A. Shwartz, Evgeny Levichev, Yu. A. Tikhonov, I.I. Morozov, A.M. Sukharev, E.A. Kuper, V.N. Zhilich, A. Yu. Barnyakov, A.N. Zhuravlev, I.V. Ovtin, V. E. Blinov, A.E. Bondar, Vladimir Zhulanov, Dmitry Shatilov, Victor Bobrovnikov, Oleg Meshkov, Evgenii Baldin, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, Sergey Peleganchuk, A.G. Shamov, Tatyana Kharlamova, V.M. Aulchenko, V. M. Malyshev, S.B. Oreshkin, V.F. Kulikov, A.M. Batrakov, V. A. Kiselev, S.A. Kononov, E.V. Starostina, A.N. Skrinsky, G.A. Savinov, V.V. Kolmogorov, A.V. Bogomyagkov, V.V. Neufeld, V. Kudryavtsev, Alexey Talyshev, Yu. V. Usov, I. B. Nikolaev, A. R. Buzykaev, A.K. Barladyan, Yu.M. Glukhovchenko, K. Yu. Todyshev, D. V. Gusev, A.A. Ruban, N. Yu. Muchnoi, Valery I. Telnov, S.V. Karpov, I.O. Orlov, V.R. Groshev, Sergey Sinyatkin, G.Ya. Kurkin, V.A. Tayursky, Pavel Piminov, A. E. Blinov, G.M. Tumaikin, V.K. Sandyrev, G.V. Karpov, A.I. Vorobiov, S.I. Eidelman, E. A. Kravchenko, K.Yu. Kotov, D.N. Grigoriev, V. V. Petrov, I. A. Kuyanov, M.Yu. Barnyakov, Alexey Maslennikov, V.G. Prisekin, Olga Rezanova, A. Bobrov, D.A. Maksimov, and Sergey Karnaev

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Physics::Accelerator Physics, High Energy Physics::Experiment, Electron, Lepton
Abstract

The ratio of the electron and muon widths of the J / ψ meson has been measured using direct J / ψ decays in the KEDR experiment at the VEPP-4M electron–positron collider. The result Γ e + e − ( J / ψ ) / Γ μ + 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 / ψ lepton width determination with up to 1% accuracy.

Published
2014
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5. Search for narrow resonances in e+e− annihilation between 1.85 and 3.1 GeV with the KEDR detector

Author

S.G. Pivovarov, A.G. Shamov, V. V. Petrov, D.N. Grigoriev, V. E. Blinov, S.I. Eidelman, Yu.M. Glukhovchenko, D. V. Gusev, Tatyana Kharlamova, V.F. Kulikov, V.N. Zhilich, V.M. Aulchenko, Oleg Meshkov, A.N. Zhuravlev, A.K. Barladyan, V.V. Gulevich, G.M. Tumaikin, A.V. Bogomyagkov, V.V. Anashin, V. M. Malyshev, A. N. Yushkov, Sergey Peleganchuk, A. Bobrov, G.A. Savinov, E. A. Kravchenko, Sergey Karnaev, D. A. Maksimov, S.B. Oreshkin, K.Yu. Kotov, S.E. Baru, Valery I. Telnov, O. L. Beloborodova, A.A. Ruban, V. A. Kiselev, V.K. Sandyrev, A.E. Bondar, E.A. Kuper, N. Yu. Muchnoi, I.B. Nikolaev, S.V. Karpov, Evgenii Baldin, B.A. Shwartz, A. Sokolov, S.A. Kononov, A. Yu. Barnyakov, A.N. Skrinsky, V. Kudryavtsev, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, M.Yu. Barnyakov, Vladimir Zhulanov, Yu. V. Usov, I.N. Okunev, K. Yu. Todyshev, E.V. Starostina, V.V. Neufeld, V.V. Kolmogorov, Alexey Talyshev, A.S. Medvedko, I.Yu. Basok, I.I. Morozov, Anton Poluektov, Alexey Maslennikov, Dmitry Shatilov, Victor Smaluk, V.G. Prisekin, I.O. Orlov, Sergey Sinyatkin, Pavel Piminov, A. E. Blinov, E. A. Simonov, S.A. Nikitin, Yu. A. Tikhonov, A. R. Buzykaev, Victor Bobrovnikov, V.A. Tayursky, G.V. Karpov, A.I. Vorobiov, Evgeny Levichev, G.Ya. Kurkin, and A.M. Sukharev

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, law, Electron–positron annihilation, Detector, Resonance, High Energy Physics::Experiment, Collider, law.invention
Abstract

We report results of a search for narrow resonances in e + e − annihilation at center-of-mass energies between 1.85 and 3.1 GeV performed with the KEDR detector at the VEPP-4M e + e − collider. The upper limit on the leptonic width of a narrow resonance Γ e e R ⋅ Br ( R → h a d r ) 120 eV has been obtained (at 90% C.L.).

Published
2011
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6. τ lepton mass determination at KEDR

Author

Yu. I. Skovpen, Andrey Sokolov, E. A. Kravchenko, S.I. Eidelman, G.V. Karpov, A.N. Zhuravlev, N. Yu. Muchnoi, E.A. Kuper, S.A. Kononov, S.V. Karpov, A. N. Yushkov, Valery I. Telnov, V. V. Petrov, A.A. Ruban, D. A. Maksimov, V. A. Kiselev, A.E. Bondar, Alexey Talyshev, A. I. Vorobiov, V.V. Neufeld, Evgenii Baldin, M.Yu. Barnyakov, G.A. Savinov, I. B. Nikolaev, I.N. Okunev, I.O. Orlov, Sergey Sinyatkin, Alexey Maslennikov, Victor Bobrovnikov, V.V. Gulevich, Yu.M. Glukhovchenko, Yu. V. Usov, G.Ya. Kurkin, S.B. Oreshkin, Anton Poluektov, V.N. Zhilich, V. M. Malyshev, Oleg Meshkov, V.K. Sandyrev, Pavel Piminov, A. E. Blinov, Victor Smaluk, A.K. Barladyan, A.G. Shamov, B.A. Shwartz, A. R. Buzykaev, V.G. Prisekin, Vladimir Zhulanov, V.V. Anashin, I.I. Morozov, A. Yu. Barnyakov, Dmitry Shatilov, A.A. Osipov, E. A. Simonov, S. I. Mishnev, A. P. Onuchin, S.A. Nikitin, E. V. Starostina, Tatyana Kharlamova, Sergey Karnaev, I. Bedny, Yu. A. Tikhonov, G.M. Tumaikin, V. E. Blinov, G. E. Pospelov, K. Yu. Todyshev, A.V. Bogomyagkov, Evgeny Levichev, S.E. Baru, A.M. Sukharev, K.Yu. Kotov, D. V. Gusev, O. L. Beloborodova, V.A. Tayursky, S. G. Pivovarov, V.F. Kulikov, A.S. Medvedko, I.Yu. Basok, A. Bobrov, A.N. Skrinsky, Sergey Peleganchuk, and V.M. Aulchenko

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, High Energy Physics::Phenomenology, Detector, Atomic and Molecular Physics, and Optics, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Lepton
Abstract

We present preliminary results of a new high-precision determination of the τ lepton mass performed with the KEDR detector at the VEPP-4M e + e − collider. These results are compared to two recent τ lepton mass measurements at Belle and BaBar.

Published
2011
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7. Measurement of D0 and D+ meson masses with the KEDR detector

Author

Oleg Meshkov, G.Ya. Kurkin, K.Yu. Kotov, Anton Poluektov, A. R. Buzykaev, I. N. Popkov, E. A. Kravchenko, V.G. Prisekin, D. A. Maksimov, O. L. Beloborodova, Valery I. Telnov, V. E. Blinov, I.O. Orlov, Sergey Sinyatkin, E.A. Kuper, S.E. Baru, V. M. Malyshev, V.F. Kulikov, V.M. Aulchenko, A.M. Sukharev, Pavel Piminov, A. E. Blinov, G.A. Savinov, E.V. Starostina, M.Yu. Barnyakov, A.N. Zhuravlev, A.S. Medvedko, Victor Smaluk, V. V. Petrov, V.K. Sandyrev, S.A. Kononov, A.V. Bogomyagkov, Yu. V. Usov, V.V. Neufeld, E. A. Simonov, A. Yu. Barnyakov, V.A. Tayursky, S.A. Nikitin, A.A. Osipov, S. I. Mishnev, A.K. Barladyan, Sergey Peleganchuk, I.I. Morozov, S.I. Eidelman, A. P. Onuchin, Yu. I. Skovpen, A. Bobrov, Yu. A. Tikhonov, V.V. Gulevich, D.V. Bondarev, A.A. Ruban, Alexey Maslennikov, G.V. Karpov, V.V. Anashin, N. Yu. Muchnoi, I. Bedny, I.B. Nikolaev, Dmitry Shatilov, A.E. Bondar, A.N. Skrinsky, A.I. Vorobiov, Tatyana Kharlamova, S.V. Karpov, Evgenii Baldin, Evgeny Levichev, S.G. Pivovarov, G.M. Tumaikin, A. Sokolov, K. Yu. Todyshev, A.G. Shamov, A. N. Yushkov, Victor Bobrovnikov, Sergey Karnaev, D. V. Gusev, S.B. Oreshkin, Alexey Talyshev, B.A. Shwartz, Vladimir Zhulanov, Yu.M. Glukhovchenko, I.N. Okunev, V. A. Kiselev, and V.N. Zhilich

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, Electron–positron annihilation, Nuclear Theory, Detector, law.invention, Nuclear physics, Positron, law, D meson, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment, Collider, Astrophysics::Galaxy Astrophysics, X(3872)
Abstract

The masses of the neutral and charged D mesons have been measured with the KEDR detector at the VEPP-4M electron–positron collider: M D 0 = 1865.30 ± 0.33 ± 0.23 MeV , M D + = 1869.53 ± 0.49 ± 0.20 MeV .

Published
2010
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8. New precise determination of the τ lepton mass at KEDR detector

Author

V.V. Anashin, V.M. Aulchenko, E.M. Baldin, A.K. Barladyan, A.Yu. Barnyakov, M.Yu. Barnyakov, S.E. Baru, I.V. Bedny, O.L. Beloborodova, A.E. Blinov, V.E. Blinov, A.B. Bobrov, V.S. Bobrovnikov, A.V. Bogomyagkov, A.E. Bondar, D.V. Bondarev, A.R. Buzykaev, V.P. Cherepanov, S.I. Eidelman, Yu.M. Glukhovchenko, V.V. Gulevich, S.E. Karnaev, G.V. Karpov, S.V. Karpov, V.A. Kiselev, S.A. Kononov, K.Yu. Kotov, E.A. Kravchenko, E.V. Kremyanskaya, V.F. Kulikov, G.Ya. Kurkin, E.A. Kuper, E.B. Levichev, D.A. Maksimov, V.M. Malyshev, A.L. Maslennikov, A.S. Medvedko, O.I. Meshkov, S.E. Mishnev, I.I. Morozov, N.Yu. Muchnoi, V.V. Neufeld, S.A. Nikitin, I.B. Nikolaev, A.P. Onuchin, S.B. Oreshkin, I.O. Orlov, A.A. Osipov, S.V. Peleganchuk, S.S. Petrosyan, S.G. Pivovarov, P.A. Piminov, V.V. Petrov, A.O. Poluektov, G.E. Pospelov, V.G. Prisekin, A.A. Ruban, V.K. Sandyrev, G.A. Savinov, A.G. Shamov, D.N. Shatilov, E.I. Shubin, B.A. Shwartz, V.A. Sidorov, E.A. Simonov, S.V. Sinyatkin, Yu.I. Skovpen, A.N. Skrinsky, V.V. Smaluk, A.M. Soukharev, M.V. Struchalin, A.A. Talyshev, V.A. Tayursky, V.I. Telnov, Yu.A. Tikhonov, K.Yu. Todyshev, G.M. Tumaikin, Yu.V. Usov, A.I. Vorobiov, A.N. Yushkov, V.N. Zhilich, and A.N. Zhuravlev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, law, Detector, High Energy Physics::Experiment, Production (computer science), Collider, Mass measurement, Atomic and Molecular Physics, and Optics, High Energy Physics - Experiment, Lepton, law.invention
Abstract

The status of the experiment on the precise $\tau$ lepton mass measurement running at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the $\tau^+\tau^-$ cross section behaviour around the production threshold. The preliminary result based on 6.7 pb$^{-1}$ of data is $m_{\tau}=1776.80^{+0.25}_{-0.23} \pm 0.15$ MeV. Using 0.8 pb$^{-1}$ of data collected at the $\psi'$ peak the preliminary result is also obtained: $\Gamma_{ee}B_{\tau\tau}(\psi') = 7.2 \pm 2.1$ eV., Comment: 6 pages, 8 figures; The 9th International Workshop on Tau-Lepton Physics, Tau06

Published
2007
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9. Recent results from the KEDR detector

Author

A.E. Bondar, E.A. Kuper, N. Yu. Muchnoi, Evgenii Baldin, E. A. Simonov, S.A. Nikitin, V. A. Kiselev, V.V. Kolmogorov, D.A. Maksimov, Alexey Talyshev, I. B. Nikolaev, I.N. Okunev, M.Yu. Barnyakov, Yu. A. Tikhonov, V. V. Petrov, S.A. Kononov, A.K. Barladyan, Alexey Maslennikov, S.V. Karpov, D.N. Grigoriev, V.V. Anashin, V.N. Zhilich, A. N. Yushkov, I.O. Orlov, G.A. Savinov, Sergey Karnaev, Sergey Sinyatkin, G.M. Tumaikin, Yu.M. Glukhovchenko, Oleg Meshkov, V.G. Prisekin, Valery I. Telnov, V.K. Sandyrev, A.N. Zhuravlev, I.I. Morozov, V.M. Aulchenko, Victor Smaluk, Pavel Piminov, A. E. Blinov, V.A. Tayursky, E. A. Kravchenko, B.A. Shwartz, Dmitry Shatilov, S.G. Pivovarov, Vladimir Zhulanov, G.V. Karpov, Yu. V. Usov, Victor Bobrovnikov, V. E. Blinov, A.I. Vorobiov, A. Yu. Barnyakov, A.G. Shamov, A.M. Sukharev, A.A. Osipov, S. I. Mishnev, A. P. Onuchin, A.N. Skrinsky, S.B. Oreshkin, Anton Poluektov, V.V. Gulevich, A.V. Bogomyagkov, A.A. Ruban, A.S. Medvedko, K. Yu. Todyshev, I.Yu. Basok, G.Ya. Kurkin, Tatyana Kharlamova, A. R. Buzykaev, V. Kudryavtsev, D. V. Gusev, Sergey Peleganchuk, Evgeny Levichev, S.E. Baru, A. Bobrov, V. M. Malyshev, E.V. Starostina, V.F. Kulikov, V.V. Neufeld, Andrey Sokolov, Semen Eidelman, K.Yu. Kotov, and O. L. Beloborodova

Subjects
Physics, Annihilation, Physics::Instrumentation and Detectors, QC1-999, Detector, Resonance, Engineering physics, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract

We describe recent results from the KEDR detector at the VEPP-4Mcollider. They include: a search for narrow resonances between 1.85 and 3.1 GeV, a test of leptonic universality by comparing partial widths of the J/ψ resonance into electron and muon pairs, a determination of the main parameters of the ψ(2S) and a measurement of ψ(3770) parameters.

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