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51 results on '"A.I. Vorobiov"'

1. Production of four charged pions with the CMD-3 detector at the VEPP-2000 collider

Author

A. P. Lysenko, A.S. Kuzmin, A.A. Grebenuk, A. V. Semenov, A.S. Popov, V.M. Titov, Alexey Anisenkov, E. P. Solodov, P.A. Lukin, A.A. Korobov, K.Yu. Mikhailov, N.S. Bashtovoy, Yu. M. Shatunov, G.V. Fedotovich, D.E. Berkaev, Vassili Kazanin, A.S. Kasaev, A.N. Amirkhanov, V.S. Okhapkin, A.V. Bragin, P. Krokovny, S.E. Gayazov, B.A. Shwartz, A.A. Ruban, A.E. Kuzmenko, A.E. Ryzhenenkov, R.R. Akhmetshin, A.E. Bondar, Yu.V. Yudin, S.I. Eidelman, A. V. Otboev, V.E. Shebalin, L.B. Epshteyn, A.I. Vorobiov, V. L. Ivanov, I. A. Koop, D.N. Grigoriev, I.B. Logashenko, N.M. Ryskulov, G.P. Razuvaev, Alexey Talyshev, E.A. Kozyrev, F.V. Ignatov, V.Sh. Banzarov, D. B. Shwartz, A.L. Sibidanov, V.M. Aulchenko, A.N. Kozyrev, S.V. Karpov, Yu.N. Pestov, E.A. Perevedentsev, A. I. Senchenko, D.N. Shemyakin, S.S. Gribanov, A.L. Erofeev, and D.A. Epifanov

Subjects
Physics, Nuclear physics, Pion, law, Detector, Collider, VEPP-2000, law.invention
Published
2020

2. Hadronic cross sections with the CMD-3 detector at the VEPP-2000

Author

A. N. Kirpotin, A. I. Senchenko, I.B. Logashenko, D.N. Shemyakin, L.B. Epshteyn, S.E. Gayazov, A.A. Ruban, A.E. Kuzmenko, I. A. Koop, D. B. Shwartz, A.L. Sibidanov, G.P. Razuvaev, S.S. Gribanov, P.A. Lukin, A.L. Erofeev, P. Krokovny, Yu.V. Yudin, Yu.N. Pestov, Alexey Talyshev, A.N. Amirkhanov, V.Sh. Banzarov, D. Epifanov, F.V. Ignatov, N.M. Ryskulov, D.E. Berkaev, Yu. A. Rogovsky, E.A. Kozyrev, Ilya Zemlyansky, Alexey Anisenkov, B.A. Shwartz, A.E. Ryzhenenkov, V.M. Titov, R.R. Akhmetshin, N.S. Bashtovoy, V.S. Okhapkin, A.A. Grebenuk, A.V. Bragin, A.S. Kuzmin, A.E. Bondar, S.V. Karpov, P. Yu. Shatunov, E. P. Solodov, A.A. Korobov, V.M. Aulchenko, A.N. Kozyrev, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, G.V. Fedotovich, Vassili Kazanin, Yu. M. Shatunov, Semen Eidelman, A.S. Popov, K.Yu. Mikhailov, A. V. Otboev, and D.N. Grigoriev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, Hadron, Detector, 01 natural sciences, law.invention, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, VEPP-2000
Abstract

This paper reports measurements of the hadronic cross sections with the CMD-3 detector at the VEPP-2000 electron-positron collider. The overall size of the data sample analyzed is about 60 pb-1, collected by the CMD- 3 running since December 2010 up to June 2013 in the c.m. energy range from 0.32 to 2.0 GeV. The preliminary results of data analysis for various modes of e + e − → hadrons are discussed.

Published
2018

3. Study of the processes e+e-→ K+K− + nπ (n = 1,2,3) with the CMD-3 detector at the VEPP-2000 electron-positron collider

Author

Yu. M. Shatunov, E. P. Solodov, A.N. Kozyrev, A.A. Korobov, D.N. Grigoriev, Alexey Talyshev, E.A. Kozyrev, Alexey Anisenkov, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, Vassili Kazanin, Yu. A. Rogovsky, N.S. Bashtovoy, Fedor Ignatov, D. B. Shwartz, A.L. Sibidanov, A. P. Lysenko, I.B. Logashenko, A.S. Popov, P.A. Lukin, A.A. Grebenuk, S.I. Eidelman, A.E. Bondar, K.Yu. Mikhailov, Yu.N. Pestov, G.P. Razuvaev, I. A. Koop, P. Krokovny, N.M. Ryskulov, D.A. Epifanov, S.V. Karpov, R.R. Akhmetshin, B.A. Shwartz, V.S. Okhapkin, A.E. Ryzhenenkov, V.M. Aulchenko, D.E. Berkaev, A.S. Kuzmin, A.N. Amirkhanov, E.A. Perevedentsev, Yu.V. Yudin, G.V. Fedotovich, A.S. Kasaev, S.S. Gribanov, A.L. Erofeev, Ilya Zemlyansky, A.V. Bragin, L.B. Epshteyn, V. S. Banzarov, S.E. Gayazov, A.A. Ruban, A.E. Kuzmenko, and D.N. Shemyakin

Subjects
Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, QC1-999, Detector, Electron, 01 natural sciences, law.invention, Nuclear physics, Positron, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, VEPP-2000, Energy (signal processing)
Abstract

The data sample collected in 2011-2013 at the c.m.s. energies between 0.32-2 GeV with the CMD-3 detector operating at the VEPP-2000 e+e− collider is analzed. The collected data corresponds to an integrated luminosity about ∼ 60pb−1. The techniques for determination of the integrated luminosity for each energy setting is described. Some preliminary results of the study of the processes e+e−→ K+ K− + nπ (n = 1,2,3) with two charged kaons in the final state are presented. These processes have several intermediate states, which are important to correctly descript the angular distributions of final particles and the cross sections dependence on the energy.

Published
2019

4. Study of π+π−π+π− production with CMD-3 detector at the VEPP-2000 collider

Author

N.M. Ryskulov, D. B. Shwartz, A.L. Sibidanov, V.E. Shebalin, D.E. Berkaev, A.I. Vorobiov, V. L. Ivanov, E.A. Perevedentsev, S.S. Gribanov, A.L. Erofeev, A.S. Kuzmin, A.V. Bragin, Alexey Anisenkov, A.S. Kasaev, A.N. Amirkhanov, Yu.N. Pestov, A. I. Senchenko, A. V. Semenov, Yu. M. Shatunov, D.N. Shemyakin, I.B. Logashenko, L.B. Epshteyn, V.M. Titov, G.P. Razuvaev, V.M. Aulchenko, V.Sh. Banzarov, A.N. Kozyrev, Yu.V. Yudin, A.E. Bondar, V.S. Okhapkin, A.A. Grebenuk, Alexey Talyshev, E. P. Solodov, E.A. Kozyrev, A. P. Lysenko, B.A. Shwartz, A.A. Korobov, A.S. Popov, N.S. Bashtovoy, I. A. Koop, A.E. Ryzhenenkov, R.R. Akhmetshin, K.Yu. Mikhailov, Vassili Kazanin, S.I. Eidelman, A. V. Otboev, P. Krokovny, S.E. Gayazov, A.A. Ruban, D.A. Epifanov, A.E. Kuzmenko, P.A. Lukin, D.N. Grigoriev, G.V. Fedotovich, S.V. Karpov, and F.V. Ignatov

Subjects
Physics, Range (particle radiation), Luminosity (scattering theory), Muon, Anomalous magnetic dipole moment, QC1-999, Hadron, Electron, 01 natural sciences, 010305 fluids & plasmas, law.invention, Nuclear physics, law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, VEPP-2000
Abstract

The cross section of the process e+e−→ π+π−π+π− has been measured using an integrated luminosity of 17 pb−1 collected with the CMD-3 detector in the center-of-mass energy range 650-1000 MeV. High-precision measurements of various hadronic cross sections are of great interest in relation with the problem of the muon anomalous magnetic moment g-2. This measurement can be also used to test the relation between the cross section of e+e−→ π+ π−π+ π− and the spectral function for the τ−→ π−π0π0π0 decay predicted by the conservation of vector current (CVC).

Published
2019

5. Recent results of the hadronic cross section measurements with the CMD-3 detector at e+e− collider VEPP-2000

Author

D.E. Berkaev, S. S. Gribanov, A. N. Kirpotin, A. V. Otboev, Fedor Ignatov, D.N. Shemyakin, S.V. Karpov, E. P. Solodov, A. N. Amirkhanov, A.N. Kozyrev, I.B. Logashenko, A.S. Popov, D. B. Shwartz, A.L. Sibidanov, A. A. Korobov, Vassili Kazanin, Alexey Talyshev, A. I. Stnchenko, A.A. Grebenuk, K.Yu. Mikhailov, S. S. Tolmachev, E.A. Kozyrev, P. Krokovny, P. Yu. Shatunov, A.V. Bragin, A.L. Erofeev, L.B. Epshteyn, A.E. Kuzmenko, Alexey Anisenkov, N.S. Bashtovoy, Yu. M. Shatunov, D. Epifanov, A.S. Kuzmin, N.M. Ryskulov, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, S.E. Gayazov, B.A. Shwartz, G.V. Fedotovich, V.S. Okhapkin, A.E. Ryzhenenkov, A.E. Bondar, A.A. Ruban, R.R. Akhmetshin, I. A. Koop, Ilya Zemlyansky, Yu. N. Peatov, V. S. Banzarov, Yu.V. Yudin, G.P. Razuvaev, V.M. Titov, P.A. Lukin, S.I. Eidelman, and D.N. Grigoriev

Subjects
Physics, Luminosity (scattering theory), Meson, 010308 nuclear & particles physics, QC1-999, Hadron, Detector, Nuclear Theory, Form factor (quantum field theory), Dalitz plot, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Nuclear Experiment, VEPP-2000
Abstract

A brief review of the recent results on the hadronic cross section measurements with the CMD-3 detector at the e+e− collider VEPP-2000 is given. Focus is made on the processes with charged kaons in multihadron events, which have a strong impact on strange meson spectroscopy and form factors that are important ingredients in the Dalitz plot analysis. Experimental data relevant to the topic are presented from the broad energy range covered by VEPP-2000 and compared to earlier measurements by the different collaborations. The analysis is based on the integrated luminosity of about 100 pb−1 collected in 2011, 2012 and 2017.

Published
2019

6. Study of e+e− annihilation to hadrons at the VEPP-2000 collider

Author

Alexey Talyshev, S. I. Serednyakov, A.L. Sibidanov, E.A. Kozyrev, S.V. Koshuba, S.I. Eidelman, F.V. Ignatov, B.A. Shwartz, L. V. Kardapoltsev, K.V. Pugachev, Yu.N. Pestov, A.E. Ryzhenenkov, R.R. Akhmetshin, M. N. Achasov, V. P. Druzhinin, D.N. Grigoriev, V. V. Zhulanov, V.N. Zhabin, G.P. Razuvaev, A.S. Kupich, N. A. Melnikova, N.M. Ryskulov, Aleksandr Korol, R.A. Litvinov, I.B. Logashenko, I. K. Surin, A. E. Obrazovsky, P. Krokovny, A.N. Amirkhanov, A.Yu. Barnyakov, A.S. Popov, S.V. Karpov, Alexander Bogdanchikov, A.E. Bondar, K.A. Martin, V.S. Okhapkin, A.S. Kuzmin, Yu.V. Yudin, K.Yu. Mikhailov, D.A. Epifanov, E. V. Pakhtusova, Konstantin Beloborodov, Alexey Anisenkov, S.E. Gayazov, A.V. Bragin, A.A. Ruban, V.M. Aulchenko, E. P. Solodov, A.N. Kozyrev, A.A. Korobov, D. A. Shtol, A.E. Kuzmenko, Z. K. Silagadze, Vassili Kazanin, V.M. Titov, S.S. Gribanov, A.L. Erofeev, T. V. Dimova, L.B. Epshteyn, D.N. Shemyakin, A. V. Berdyugin, N.S. Bashtovoy, G.V. Fedotovich, Alexey Kharlamov, A.A. Grebenuk, V.Sh. Banzarov, A. A. Botov, D.P. Kovrizhin, A.V. Vasiljev, P.A. Lukin, L.A. Korneev, Y. Usov, V.E. Shebalin, A.I. Vorobiov, V.G. Golubev, and V. L. Ivanov

Subjects
Physics, Annihilation, 010308 nuclear & particles physics, Electron–positron annihilation, QC1-999, Hadron, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, 010306 general physics, Collider, VEPP-2000
Abstract

We present current status of the SND and CMD-3 experiments at the VEPP-2000 e+e− collider and recent result of data analysis on the processes $e^+e^-\rightarrow\pi^+\pi^-,n\overline n,\pi^+\pi^-\eta,\pi^+\pi^-\pi^0\eta,K_SK_L\pi^0$, etc.

Published
2019

7. CMD-3 Overview

Author

N.M. Ryskulov, Alexey Talyshev, P.A. Lukin, P. Yu. Shatunov, A.E. Bondar, E.A. Kozyrev, V. S. Banzarov, A.A. Grebenuk, P. Krokovny, A. N. Kirpotin, S.E. Gayazov, D.N. Shemyakin, A.A. Ruban, Ilya Zemlyansky, G.V. Fedotovich, A.E. Kuzmenko, E. P. Solodov, A.S. Kuzmin, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, D.N. Grigoriev, A.N. Kozyrev, A.A. Korobov, A.N. Amirkhanov, I.B. Logashenko, S.S. Gribanov, A.L. Erofeev, V.M. Aulchenko, A.S. Popov, D.A. Epifanov, G.P. Razuvaev, D. B. Shwartz, A.L. Sibidanov, A.V. Bragin, Vassili Kazanin, B.A. Shwartz, Yu.V. Yudin, Alexey Anisenkov, A.E. Ryzhenenkov, K.Yu. Mikhailov, Yu.N. Pestov, Fedor Ignatov, N.S. Bashtovoy, S.I. Eidelman, A. V. Otboev, S.V. Karpov, Yu. M. Shatunov, V.S. Okhapkin, A. I. Senchenko, Ivan Koop, R.R. Akhmetshin, L.B. Epshteyn, and D.E. Berkaev

Subjects
Physics, Range (particle radiation), Muon, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, QC1-999, Detector, Hadron, 01 natural sciences, law.invention, Calorimeter, Nuclear physics, Upgrade, law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, 010306 general physics, Collider, Nuclear Experiment, Energy (signal processing)
Abstract

The CMD-3 detector is installed at the VEPP-2000 e+e− collider at BINP (Novosibirsk, Russia). It is a general-purpose detector, equipped with a tracking system, two crystal (CSI and BGO) calorimeters, liquid Xe calorimeter, TOF and muon systems. The main goal of experiments at CMD-3 is a study of exclusive modes of e+e−→ hadrons at energies $ \sqrt s \le $ GeV. In particular, these results provide an important input for calculation of the hadronic contribution to the muon anomalous magnetic moment. The first round of data taking was performed in 2011–2013, when about 60 1/pb were taken in the center-of-mass (c.m.) energy range from 0.32 to 2.0 GeV. Here we present a survey of results of data analysis. Between 2013 and 2016 the collider and the detector were upgraded. The data taking resumed by the end of 2016. In the first run after the upgrade about 50 1/pb were collected at the energy range between 1.28 and 2.007 GeV. We discuss the upgrade and the first preliminary results from the new data.

Published
2019

8. Study of the process e+e−→ K+K−π0 in the center-of-mass energy range 1.2–2 GeV with the CMD-3 detector

Author

A. V. Semenov, P.A. Lukin, F.V. Ignatov, E.A. Perevedentsev, N.S. Bashtovoy, L.B. Epshteyn, S.S. Gribanov, D.A. Epifanov, V.Sh. Banzarov, A.L. Erofeev, G.P. Razuvaev, S.E. Gayazov, A.A. Ruban, G.V. Fedotovich, S.V. Karpov, Yu.N. Pestov, A.E. Kuzmenko, B.A. Shwartz, Yu.V. Yudin, A.S. Kuzmin, A.E. Ryzhenenkov, R.R. Akhmetshin, Alexey Talyshev, A.S. Popov, N.M. Ryskulov, V.M. Titov, E.A. Kozyrev, I.B. Logashenko, D.E. Berkaev, K.Yu. Mikhailov, A. P. Lysenko, P. Krokovny, I. A. Koop, A.A. Grebenuk, Yu. M. Shatunov, V.S. Okhapkin, A.S. Kasaev, E. P. Solodov, A.A. Korobov, A.N. Amirkhanov, A.V. Bragin, A. I. Senchenko, Vassili Kazanin, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, D.N. Shemyakin, V.M. Aulchenko, A.N. Kozyrev, Alexey Anisenkov, D. B. Shwartz, A.L. Sibidanov, A.E. Bondar, D.N. Grigoriev, S.I. Eidelman, and A. V. Otboev

Subjects
Physics, Nuclear physics, Range (particle radiation), law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Electron–positron annihilation, QC1-999, Detector, Center of mass, Collider, Energy (signal processing), law.invention
Abstract

The process e+ e−→ K+ K−π0 has been studied in the center-of-mass energy range from 1.2 to 2 GeV using a 80.6 pb−1 data sample collected with the CMD-3 detector at the electron-positron collider VEPP-2000. Preliminary results of the cross-section measurement are presented.

Published
2019

9. Study of the processe+e−→KS0KL0in the center-of-mass energy range 1004–1060 MeV with the CMD-3 detector at the VEPP-2000 e + e − collider

Author

Yu. M. Shatunov, Alexey Anisenkov, N.M. Ryskulov, E. P. Solodov, A.V. Bragin, A.A. Korobov, Yu.N. Pestov, P.A. Lukin, Fedor Ignatov, N.S. Bashtovoy, Vassili Kazanin, A.L. Erofeev, V.M. Titov, A.S. Kasaev, A.N. Kozyrev, A.S. Popov, D.E. Berkaev, S.S. Gribanov, A.N. Amirkhanov, V.M. Aulchenko, B.A. Shwartz, K.Yu. Mikhailov, A.E. Bondar, V.S. Okhapkin, A.E. Ryzhenenkov, S.V. Karpov, A. N. Kirpotin, L.B. Epshteyn, D. Epifanov, Yu.V. Yudin, A. I. Senchenko, I. A. Koop, A.A. Grebenuk, D.N. Shemyakin, I.B. Logashenko, P. Yu. Shatunov, S.I. Eidelman, A. V. Otboev, D.N. Grigoriev, G.V. Fedotovich, V. S. Banzarov, A.L. Sibidanov, G.P. Razuvaev, S.E. Gayazov, Alexey Talyshev, A.A. Ruban, A.S. Kuzmin, A.E. Kuzmenko, E.A. Kozyrev, P. Krokovny, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, D.B. Shwartz, and O.A. Kovalenko

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, 010308 nuclear & particles physics, Detector, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Center of mass, 010306 general physics, Collider, VEPP-2000, Energy (signal processing)
Abstract

This work is supported in part by the Russian Education and by the Russian Foundation for Basic RFBR 14-02-00580-a, RFBR 14-02-91332, RFBR 15-02-05674-a and RFBR 16-02-00160-a.

Published
2016

10. Study of the process e+e−→pp¯ in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector

Author

Fedor Ignatov, A.V. Bragin, D. Epifanov, Yu.V. Yudin, G.P. Razuvaev, A.L. Sibidanov, S.G. Pivovarov, B.I. Khazin, S.I. Eidelman, A. V. Otboev, N.M. Ryskulov, B.A. Shwartz, A.E. Ryzhenenkov, R.R. Akhmetshin, S.S. Gribanov, D.E. Berkaev, A.L. Erofeev, I.B. Logashenko, S.E. Gayazov, P. Krokovny, A.E. Bondar, A.A. Grebenuk, Yu.N. Pestov, A.E. Kuzmenko, O.A. Kovalenko, S.V. Karpov, I. A. Koop, Alexey Talyshev, D. B. Shwartz, E.A. Kozyrev, Yu. M. Shatunov, Alexey Anisenkov, V.S. Okhapkin, V.M. Aulchenko, A.S. Kasaev, A.N. Kozyrev, A.L. Romanov, L.B. Epshteyn, D.N. Grigoriev, A.N. Amirkhanov, A. N. Kirpotin, D.N. Shemyakin, A.A. Ruban, V.Sh. Banzarov, A.S. Popov, K.Yu. Mikhailov, V.M. Titov, Yu. M. Zharinov, P. Yu. Shatunov, G.V. Fedotovich, E.M. Gromov, E. P. Solodov, Vassili Kazanin, A.S. Kuzmin, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, P.A. Lukin, and N.S. Bashtovoy

Subjects
Physics, Systematic error, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Electron–positron annihilation, Detector, 01 natural sciences, law.invention, Nuclear physics, Angular distribution, law, 0103 physical sciences, 010306 general physics, Nucleon, Collider, Energy (signal processing)
Abstract

Using a data sample of 7.7 pb − 1 collected with the CMD-3 detector at the VEPP-2000 e + e − collider we select about 2900 events of the process e + e − → p p ¯ and measure its cross section at 12 energy points with about 6% systematic uncertainty. From the angular distribution of produced nucleons we obtain the ratio G E / G M .

Published
2016

11. Preliminary results of the cross-section measurement of e+e− → φ(1020)η process with the CMD-3 detector at VEPP-2000 collider

Author

B.A. Shwartz, A.E. Ryzhenenkov, Alexey Anisenkov, P. Yu. Shatunov, G.P. Razuvaev, A.S. Popov, P.A. Lukin, K.Yu. Mikhailov, O.A. Kovalenko, S.V. Karpov, N.M. Ryskulov, L.B. Epshteyn, A.L. Sibidanov, Yu. M. Shatunov, V.M. Aulchenko, A.N. Kozyrev, B.I. Khazin, G.V. Fedotovich, A.L. Romanov, I.B. Logashenko, D. B. Shwartz, Alexey Talyshev, E.A. Perevedentsev, P. Krokovny, E.A. Kozyrev, E. M. Gromov, D.N. Shemyakin, D. A. Epifanov, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, D.E. Berkaev, D.N. Grigoriev, V.M. Titov, A.L. Erofeev, I. A. Koop, Yu.N. Pestov, V. S. Banzarov, S.E. Gayazov, A.V. Bragin, A.A. Ruban, A.E. Kuzmenko, S. Eidelman, Yu. A. Rogovsky, N.S. Bashtovoy, Fedor Ignatov, A.N. Amirkhanov, R.R. Akhmetshin, V.S. Okhapkin, Yu.V. Yudin, E. P. Solodov, Vassili Kazanin, A.S. Kuzmin, and A.A. Grebenuk

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Luminosity (scattering theory), 010308 nuclear & particles physics, Electron–positron annihilation, Detector, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, Nuclear physics, Cross section (physics), law, 0103 physical sciences, 010306 general physics, Collider, VEPP-2000, Energy (signal processing)
Abstract

We report preliminary results on the cross section of the process e+e− → φ(1020)η measured at 30 center-of-mass energy points in the range from 1.59 up to 2.0 GeV. Data analysis is based on the integrated luminosity of 22 pb−1 collected with the CMD-3 detector in 2011–2012. The obtained cross section agrees with the BaBar measurement and has better statistical accuracy.

Published
2016

12. Measurement of Ruds and R between 3.12 and 3.72 GeV at the KEDR detector

Author

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

Subjects
Physics, Systematic error, Particle physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, FOS: Physical sciences, 01 natural sciences, lcsh:QC1-999, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, 010306 general physics, Collider, lcsh:Physics
Abstract

Using the KEDR detector at the VEPP-4M e + e − e + e − collider, we have measured the values of R uds 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% 3.3 % at most of energy points with a systematic uncertainty of about 2.1% 2.1 % . At the moment it is the most accurate measurement of R(s) R ( s ) in this energy range.

Published
2016

13. Precise measurement of And between 1.84 and 3.72 GeV at the KEDR detector

Author

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

Subjects
Systematic error, Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Detector, Monte Carlo method, FOS: Physical sciences, 01 natural sciences, R-value (insulation), lcsh:QC1-999, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, 010306 general physics, Collider, lcsh:Physics
Abstract

The present work continues a series of the KEDR measurements of the $R$ value that started in 2010 at the VEPP-4M $e^+e^-$ collider. By combining new data with our previous results in this energy range we measured the values of $R_{\text{uds}}$ and $R$ at nine center-of-mass energies between 3.08 and 3.72 GeV. The total accuracy is about or better than $2.6\%$ at most of energy points with a systematic uncertainty of about $1.9\%$. Together with the previous precise $R$ measurement at KEDR in the energy range 1.84-3.05 GeV, it constitutes the most detailed high-precision $R$ measurement near the charmonium production threshold., arXiv admin note: text overlap with arXiv:1610.02827 and substantial text overlap with arXiv:1510.02667

Published
2018

14. Measurement of the hadronic cross sections with the CMD-3 and SND detectors at the VEPP-2000 collider

Author

Aleksandr Korol, A. N. Kirpotin, D.A. Epifanov, D.N. Shemyakin, A.S. Popov, Fedor Ignatov, D. B. Shwartz, A.V. Vasiljev, N. Yu. Muchnoi, S. I. Serednyakov, A.E. Bondar, P. Krokovny, Z. K. Silagadze, K.Yu. Mikhailov, A.L. Sibidanov, V.S. Okhapkin, A.S. Kasaev, S.V. Koshuba, T. V. Dimova, L. V. Kardapoltsev, L.B. Epshteyn, N. A. Melnikova, A. A. Botov, Yu. M. Shatunov, I.B. Logashenko, A. I. Senchenko, V. B. Golubev, I. K. Surin, A.N. Amirkhanov, E. V. Pakhtusova, A.V. Bragin, A. V. Berdyugin, N.S. Bashtovoy, M. N. Achasov, A.Yu. Barnyakov, A.N. Kozyrev, A.S. Kuzmin, B.A. Shwartz, D. P. Kovrizhin, E. P. Solodov, A.A. Korobov, A.E. Ryzhenenkov, V.M. Aulchenko, R.R. Akhmetshin, A. P. Lysenko, S.V. Karpov, Yu. A. Tikhonov, P.A. Lukin, S.E. Gayazov, Vassili Kazanin, A.A. Grebenuk, A.A. Ruban, V. P. Druzhinin, Konstantin Beloborodov, Alexey Anisenkov, V. S. Banzarov, A.E. Kuzmenko, G.P. Razuvaev, Yu. A. Rogovsky, D. A. Shtol, A. E. Obrazovsky, Yu.V. Yudin, Alexey Kharlamov, Alexey Talyshev, I. A. Koop, I. M. Zemlyansky, Y. Usov, E.A. Kozyrev, D.E. Berkaev, P. Yu. Shatunov, A.N. Skrinsky, G.V. Fedotovich, E.A. Perevedentsev, S.S. Gribanov, A.L. Erofeev, Yu.N. Pestov, N.M. Ryskulov, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, Alexander Bogdanchikov, K. A. Martin, A. S. Kupich, S.I. Eidelman, and D.N. Grigoriev

Subjects
Physics, Muon, Luminosity (scattering theory), 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, QC1-999, Hadron, Detector, 01 natural sciences, law.invention, Nuclear physics, Upgrade, law, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, 010306 general physics, Collider, VEPP-2000, Beam energy
Abstract

Since December 2010 the CMD-3 and SND detectors detectors collect data at the VEPP-2000 electron-positron collider. In 2013-2015 the injection facility of the collider has undergone an upgrade of the injection system. The new BINP injection complex has been connected to the VEPP-2000 collider, so the restrictions connected to the lack of positrons and limited beam energy transfer do not apply any more. The collider luminosity in whole energy range is restricted now only by beam-beam effects. VEPP-2000 collider started to collect data with two detectors at 2016 year. The collected data sample since 2010 corresponds more than 100 pb-1 of integrated luminosity per detector in the c.m. energy between 0.32 and 2GeV. We will report here results of analysis of various hadronic cross sections from detectors both published and preliminary. These measurements are important by themselves and also because of the implications for anomaly of the magnetic moment of a muon (g-2) discrepancy.

Published
2018

15. Final analysis of KEDR data onJ/ψandψ(2S)masses

Author

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

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, law, Electron–positron annihilation, Resonance, Collider, Beam energy, law.invention
Abstract

We present the analysis of all KEDR data on the determination of J / ψ and ψ ( 2 S ) masses. The data comprise six scans of J / ψ and seven scans of ψ ( 2 S ) which were performed at the VEPP-4M e + e − collider in 2002–2008. The beam energy was determined using the resonance depolarization method. The detector and accelerator conditions during scans were very different that increases the reliability of the averaged results. The analysis accounts for partial correlations of systematic uncertainties on the masses. The following mass values were obtained: M J / ψ = 3096.900 ± 0.002 ± 0.006 MeV , M ψ ( 2 S ) = 3686.099 ± 0.004 ± 0.009 MeV . These results supersede our previous measurements published in 2003 and 2012.

Published
2015

16. Investigation of the processes e + e − → 2 (π+π−π0) and e + e − → 3 (π+π−) with the aid of the CMD-3 detector

Author

A.N. Kozyrev, A.L. Romanov, P. A. Lukin, Yu.S. Popov, S. E. Gayazov, B.A. Shwartz, L. B. Epshteyn, P. P. Krokovny, A.L. Erofeev, Yu.N. Pestov, R.R. Akhmetshin, I. A. Koop, A.A. Ruban, E. A. Kozyrev, A. E. Ryzhenenkov, B. I. Khazin, A.L. Sibidanov, Yu.V. Yudin, N.S. Bashtovoy, N.M. Ryskulov, D. A. Epifanov, Alexey Anisenkov, A. A. Grebenuk, V.E. Shebalin, A.I. Vorobiov, A. N. Kirpotin, A. A. Talyshev, V.S. Okhapkin, I. B. Logashenko, V.Sh. Banzarov, E. P. Solodov, D. E. Berkaev, O. A. Kovalenko, D. N. Shemyakin, A. E. Kuzmenko, D. N. Grigoriev, P. Yu. Shatunov, V.M. Titov, Yu. M. Zharinov, D.B. Shwartz, Yu. A. Rogovsky, E. A. Perevedentsev, A.S. Kuzmin, A. S. Popov, E. M. Gromov, S.V. Karpov, K.Yu. Mikhailov, Yu. M. Shatunov, G. P. Razuvaev, V. M. Aulchenko, V. F. Kazanin, G. V. Fedotovich, Fedor Ignatov, A.V. Bragin, Semen Eidelman, and A. P. Lysenko

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Luminosity (scattering theory), law, Detector, Atomic physics, Collider, Atomic and Molecular Physics, and Optics, law.invention
Abstract

The cross sections for the processes e + e − → 2(π+π−π0) and e + e − → 3(π+π−) at c.m. energies in the range of 1.5–2 GeV were measured with the aid of the CMD-3 detector at the VEPP-2000 collider of the Budker Institute of Nuclear Physics (Novosibirsk, Siberian Branch, Russian Academy of Sciences). The integrated luminosity in the respective experiment was 22 pb−1.

Published
2015

17. Measurement of J/ψ→γηc decay rate and ηc parameters at KEDR

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Photon, law, Electron–positron annihilation, Detector, Radiative decay, Atomic physics, Collider, law.invention
Abstract

Using the inclusive photon spectrum based on a data sample collected at the J / ψ peak with the KEDR detector at the VEPP-4M e + e − collider, we measured the rate of the radiative decay J / ψ → γ η c as well as η c mass and width. Taking into account an asymmetric photon lineshape we obtained Γ γ η c 0 = 2.98 ± 0.18 − 0.33 + 0.15 keV , M η c = 2983.5 ± 1.4 − 3.6 + 1.6 MeV / c 2 , Γ η c = 27.2 ± 3.1 − 2.6 + 5.4 MeV .

Published
2014

18. Preliminary results on CMD-3 measurement of e+e−→ π+π− cross section

Author

A. P. Lysenko, A.S. Kasaev, A.S. Popov, D.A. Epifanov, A.N. Amirkhanov, S.I. Eidelman, G.V. Fedotovich, D.N. Shemyakin, P. Krokovny, D.N. Grigoriev, A.N. Kozyrev, A.S. Kuzmin, V. S. Banzarov, A.A. Grebenuk, N.S. Bashtovoy, Yu.N. Pestov, Alexey Anisenkov, K.Yu. Mikhailov, Yu. M. Shatunov, Fedor Ignatov, I.B. Logashenko, Yu.V. Yudin, P.A. Lukin, N.M. Ryskulov, R.R. Akhmetshin, Ivan Koop, L.B. Epshteyn, B.A. Shwartz, D.E. Berkaev, Yu. A. Rogovsky, A.E. Ryzhenenkov, G.P. Razuvaev, S.E. Gayazov, A.A. Ruban, A.E. Kuzmenko, E.A. Perevedentsev, S.S. Gribanov, A.L. Erofeev, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, A.E. Bondar, S.V. Karpov, Alexey Talyshev, A.V. Bragin, E.A. Kozyrev, D. B. Shwartz, A.L. Sibidanov, V.M. Aulchenko, V.S. Okhapkin, E. P. Solodov, A.A. Korobov, and Vassili Kazanin

Subjects
Physics, Range (particle radiation), Luminosity (scattering theory), 010308 nuclear & particles physics, QC1-999, Detector, 01 natural sciences, law.invention, Nuclear physics, Cross section (physics), law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, 010306 general physics, Collider
Abstract

The CMD-3 detector has been successfully collecting data at the electron-positron collider VEPP-2000 since December 2010. The first scan below 1 GeV for a π+π− measurement was performed in 2013. The collected data sample corresponds to about 18 pb−1 of integrated luminosity in this energy range. Analysis of the e+e−→ π+π− cross section is in progress. Status of this measurement are presented.

Published
2019

19. Current status of luminosity measurement with the CMD-3 detector at the VEPP-2000 collider

Author

Alexey Talyshev, P. Yu. Shatunov, E.A. Kozyrev, G.P. Razuvaev, N.M. Ryskulov, E. P. Solodov, D.A. Epifanov, D.N. Grigoriev, S.E. Gayazov, G.V. Fedotovich, A.S. Popov, Fedor Ignatov, A.A. Ruban, A.A. Korobov, Vassili Kazanin, K.Yu. Mikhailov, D.N. Shemyakin, P.A. Lukin, A.I. Vorobiov, Yu. M. Shatunov, P. Krokovny, A.S. Kuzmin, E.A. Perevedentsev, V.S. Okhapkin, S.S. Gribanov, A.L. Erofeev, S.I. Eidelman, A. V. Otboev, Yu.N. Pestov, A.E. Kuzmenko, S.V. Karpov, V.E. Shebalin, V. L. Ivanov, N.S. Bashtovoy, I. A. Koop, A.N. Amirkhanov, V.Sh. Banzarov, I.B. Logashenko, D.E. Berkaev, L.B. Epshteyn, B.A. Shwartz, A.E. Ryzhenenkov, R.R. Akhmetshin, Yu.V. Yudin, Alexey Anisenkov, A.V. Bragin, A.E. Bondar, S. S. Tolmachev, A.A. Grebenuk, V.M. Aulchenko, A.N. Kozyrev, D. B. Shwartz, and A.L. Sibidanov

Subjects
Physics, Range (particle radiation), Photon, Luminosity (scattering theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, QC1-999, Detector, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, law.invention, Nuclear physics, law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, VEPP-2000, Astrophysics::Galaxy Astrophysics, Energy (signal processing)
Abstract

The CMD-3 detector started data taking at the electron-positron collider VEPP-2000 [1] in December 2010. The collected data sample corresponds to an integrated luminosity of 87 pb−1 in the c.m. energy range from 1.06 up to 2 GeV and 91 pb−1 from 0.32 to 1.06 GeV. The integrated luminosity was measured by counting e+e−→ e+e− and e+e−→ γγ events, allowing additional photons in the final state. Preliminary results of the luminosity measurement are presented for various energy ranges and its accuracy is estimated to be 1%.

Published
2019

20. Recent results from CMD-3

Author

N.M. Ryskulov, S.I. Eidelman, I.B. Logashenko, D.N. Grigoriev, A.N. Amirkhanov, P. Krokovny, P.A. Lukin, S.V. Karpov, B.A. Shwartz, A.E. Ryzhenenkov, Ilya Zemlyansky, A.V. Bragin, R.R. Akhmetshin, A.S. Popov, Alexey Talyshev, P. Yu. Shatunov, A. N. Kirpotin, N.S. Bashtovoy, K.Yu. Mikhailov, E.A. Kozyrev, A.S. Kuzmin, D.E. Berkaev, A.A. Grebenuk, S.S. Gribanov, Yu. M. Shatunov, A.L. Erofeev, F.V. Ignatov, Yu.N. Pestov, G.V. Fedotovich, Alexey Anisenkov, D.N. Shemyakin, S.E. Gayazov, Yu.V. Yudin, V.E. Shebalin, A.I. Vorobiov, A.A. Ruban, A.E. Bondar, A. V. Semenov, V. L. Ivanov, D.A. Epifanov, A.E. Kuzmenko, I. A. Koop, V.M. Titov, G.P. Razuvaev, V.Sh. Banzarov, Yu. A. Rogovsky, V.M. Aulchenko, A.N. Kozyrev, D. B. Shwartz, A.L. Sibidanov, V.S. Okhapkin, E. P. Solodov, L.B. Epshteyn, A.A. Korobov, and Vassili Kazanin

Subjects
Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, QC1-999, Electron–positron annihilation, Detector, 01 natural sciences, law.invention, law, 0103 physical sciences, Range (statistics), 010306 general physics, Collider
Abstract

Regular data taking with the CMD-3 at the electron-positron collider VEPP-2000 is under way since 2010. The collected data sample corresponds to about 200 inverse picobarns of integrated luminosity per detector in the energy range from 0.32 up to 2 GeV, with a goal to collect about 1 fb−1 during next five years. Some of the recent results from the CMD-3 detector are discussed.

Published
2019

21. Study of the e+e−→ KS KLπ0 process up to 2 GeV with the CMD-3 detector at the VEPP-2000 collider

Author

P. Yu. Shatunov, A.E. Bondar, G.V. Fedotovich, N.M. Ryskulov, P.A. Lukin, D. B. Shwartz, A.L. Sibidanov, E. P. Solodov, A.A. Korobov, I. A. Koop, S.V. Karpov, N.S. Bashtovoy, A.S. Popov, A.N. Amirkhanov, D.E. Berkaev, I.B. Logashenko, Alexey Anisenkov, A.S. Kuzmin, Vassili Kazanin, K.Yu. Mikhailov, Ilya Zemlyansky, B.A. Shwartz, A.E. Ryzhenenkov, Yu. M. Shatunov, R.R. Akhmetshin, A. V. Semenov, Alexey Talyshev, V.E. Shebalin, A.I. Vorobiov, F.V. Ignatov, V. L. Ivanov, S.E. Gayazov, A.A. Ruban, A.V. Bragin, V.M. Titov, V.S. Okhapkin, S.I. Eidelman, A.E. Kuzmenko, V.M. Aulchenko, E.A. Kozyrev, S.S. Gribanov, A.N. Kozyrev, A.L. Erofeev, L.B. Epshteyn, P. Krokovny, G.P. Razuvaev, Yu.N. Pestov, A.A. Grebenuk, D.N. Grigoriev, D.A. Epifanov, Yu. A. Rogovsky, Yu.V. Yudin, V.Sh. Banzarov, A. N. Kirpotin, and D.N. Shemyakin

Subjects
Physics, Physics::Instrumentation and Detectors, QC1-999, Electron–positron annihilation, Detector, law.invention, Nuclear physics, Cross section (physics), law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, VEPP-2000
Abstract

The cross section of the process e+ e−→ KS KL π0 has been studied with the CMD-3 detector at the VEPP-2000 electron-positron collider in the center-of-mass energy range from 1.1 to 2 GeV. Preliminary results on the total cross section of the process are presented.

Published
2019

22. An amplitude analysis of the process e+e-→ 4π in the center-of-mass energy range 900–2000 MeV with the CMD3 detector at the VEPP-2000 e+e- collider

Author

S.E. Gayazov, Alexey Talyshev, A.A. Ruban, A.E. Kuzmenko, Yu. A. Rogovsky, E.A. Kozyrev, A.V. Bragin, Yu. M. Shatunov, V.M. Titov, S.I. Eidelman, Yu.V. Yudin, B.A. Shwartz, Alexey Anisenkov, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, V.S. Okhapkin, D. B. Shwartz, Yu.N. Pestov, A.L. Sibidanov, N.S. Bashtovoy, A.E. Ryzhenenkov, R.R. Akhmetshin, A.S. Popov, E. P. Solodov, A.A. Korobov, P.A. Lukin, N.M. Ryskulov, P. Krokovny, A.S. Kuzmin, P. Yu. Shatunov, I. A. Koop, K.Yu. Mikhailov, A. V. Semenov, Vassili Kazanin, S.V. Karpov, L.B. Epshteyn, A.N. Amirkhanov, D.N. Grigoriev, D.E. Berkaev, G.V. Fedotovich, G.P. Razuvaev, A.E. Bondar, V.M. Aulchenko, A.N. Kozyrev, V.Sh. Banzarov, I.B. Logashenko, F.V. Ignatov, A. N. Kirpotin, D.N. Shemyakin, Ilya Zemlyansky, S.S. Gribanov, A.L. Erofeev, D.A. Epifanov, and A.A. Grebenuk

Subjects
Physics, Range (particle radiation), 010308 nuclear & particles physics, QC1-999, Detector, 01 natural sciences, law.invention, Nuclear physics, Amplitude, law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, 0103 physical sciences, Physics::Accelerator Physics, High Energy Physics::Experiment, Center of mass, 010306 general physics, Collider, VEPP-2000, Energy (signal processing)
Abstract

A large data sample of e+e-→ 4π collected by the CMD-3 experiment at the VEPP-2000 e+ e− collider allowed for an amplitude analysis of the process e+e−→ 4π in the center-of-mass energy range 900–2000 MeV. Various intermediate components were distinguished and dominance of the ωπ0 and a1π amplitudes has been proved.

Published
2019

23. Study of the process e+e−→3(π+π−) in the c.m. energy range 1.5–2.0 GeV with the CMD-3 detector

Author

E.A. Perevedentsev, A.S. Kasaev, V.Sh. Banzarov, S.S. Gribanov, A.N. Amirkhanov, A.L. Erofeev, P.A. Lukin, S.V. Karpov, Yu.V. Yudin, I.B. Logashenko, D. Epifanov, A.E. Bondar, A.S. Kuzmin, G.P. Razuvaev, A. V. Semenov, F.V. Ignatov, E. P. Solodov, D.N. Shemyakin, A.A. Korobov, S.I. Eidelman, Ilya Zemlyansky, Alexey Talyshev, V.M. Aulchenko, M.V. Timoshenko, D.E. Berkaev, E.A. Kozyrev, Vassili Kazanin, A.A. Grebenuk, Alexey Anisenkov, A.N. Kozyrev, L.B. Epshteyn, D. B. Shwartz, P. Krokovny, A.L. Sibidanov, B.A. Shwartz, A.E. Ryzhenenkov, A.V. Bragin, R.R. Akhmetshin, V.S. Okhapkin, D.N. Grigoriev, F. Grancagnolo, A. P. Lysenko, I. A. Koop, N.S. Bashtovoy, V.M. Titov, G.V. Fedotovich, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, A.S. Popov, K.Yu. Mikhailov, Yu. M. Shatunov, S.E. Gayazov, A.A. Ruban, A.E. Kuzmenko, Yu.N. Pestov, and N.M. Ryskulov

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Range (particle radiation), law, Electron–positron annihilation, Detector, Intermediate state, Atomic physics, Collider, Energy (signal processing), law.invention
Abstract

The cross section of the process e + e − → 3 ( π + π − ) π 0 has been measured for the first time using a data sample of 56.7 pb−1 collected with the CMD-3 detector at the VEPP-2000 e + e − collider. 632±32 signal events have been selected in the center-of-mass energy range 1.6–2.0 GeV. A study of dynamics of seven-pion production allows one to extract contributions of the dominated 2 ( π + π − ) ω and 2 ( π + π − ) η intermediate states.

Published
2013

24. Measurement of $R$ between 1.84 and 3.05 GeV at the KEDR detector

Author

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

Subjects
Physics, Systematic error, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, Detector, FOS: Physical sciences, 01 natural sciences, lcsh:QC1-999, law.invention, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, 010306 general physics, Collider, lcsh:Physics, Energy (signal processing)
Abstract

Using the KEDR detector at the VEPP-4M e + e − collider, we have determined the values of R at thirteen points of the center-of-mass energy between 1.84 and 3.05 GeV. The achieved accuracy is about or better than 3.9 % at most of the energy points with a systematic uncertainty less than 2.4 % .

Published
2016
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25. Overview of the CMD-3 recent results at e+e− collider VEPP-2000

Author

S.E. Gayazov, N.M. Ryskulov, A.A. Ruban, D. B. Shwartz, Alexey Anisenkov, P. Yu. Shatunov, I.B. Logashenko, Yu. M. Shatunov, L.B. Epshteyn, D.E. Berkaev, G.V. Fedotovich, A. P. Lysenko, V.M. Aulchenko, Alexey Talyshev, P. Krokovny, A.N. Kozyrev, A.L. Romanov, A.V. Bragin, P.A. Lukin, Yu.V. Yudin, E.A. Kozyrev, S.V. Karpov, I. A. Koop, O.A. Kovalenko, V.E. Shebalin, D. A. Epifanov, A.I. Vorobiov, V. L. Ivanov, Yu. A. Rogovsky, A.L. Sibidanov, A. N. Kirpotin, B.I. Khazin, A.L. Erofeev, V.M. Titov, A.S. Popov, E. M. Gromov, E.A. Perevedentsev, B.A. Shwartz, Yu. M. Zharinov, A.E. Ryzhenenkov, D.N. Shemyakin, G.P. Razuvaev, K.Yu. Mikhailov, Semen Eidelman, V. S. Banzarov, Yu.N. Pestov, Fedor Ignatov, A.E. Kuzmenko, N.S. Bashtovoy, V.S. Okhapkin, E. P. Solodov, Vassili Kazanin, R.R. Akhmetshin, D.N. Grigoriev, A.S. Kuzmin, and A.A. Grebenuk

Subjects
Physics, Annihilation, Luminosity (scattering theory), 010308 nuclear & particles physics, QC1-999, Hadron, Detector, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Invariant mass, High Energy Physics::Experiment, 010306 general physics, Collider, VEPP-2000, Energy (signal processing)
Abstract

Since December 2010, the CMD-3 detector has collected data at the electronpositron collider VEPP-2000. The sample of the accumulated data corresponds to about 60 pb −1 of integrated luminosity in the c.m. energy from 0.32 up to 2 GeV. Preliminary results of the analysis of various processes e + e − annihilation to hadrons are presented. It is shown the processes with multihadron events have several intermediate states which must be taken into account to correctly describe the angular and invariant mass distributions as well as cross section dependence versus energy.

Published
2016

26. First results from the CMD-3 Detector at the VEPP-2000 Collider

Author

N.M. Ryskulov, D.E. Berkaev, Yu.V. Yudin, S.A. Ahokhin, D.N. Grigoriev, A. P. Lysenko, Alexey Talyshev, A.V. Bragin, A.S. Popov, A.S. Kuzmin, E.A. Perevedentsev, Semen Eidelman, D.B. Shwartz, S. Pirogov, K.Yu. Mikhailov, A.E. Bondar, S.E. Gayazov, P. Yu. Shatunov, B.A. Shwartz, Yu.N. Pestov, Yu. M. Shatunov, V. S. Banzarov, A.A. Ruban, A.E. Ryzhenenkov, S.I. Redin, S.G. Pivovarov, Yu.S. Popov, I.G. Snopkov, A.S. Zaytsev, Yu. A. Rogovsky, Fedor Ignatov, L.M. Barkov, A.L. Sibidanov, Ivan Koop, B.I. Khazin, G.V. Fedotovich, E.N. Gromov, A.V. Anisyonkov, I.B. Logashenko, P.A. Lukin, V.M. Aulchenko, A.N. Kozyrev, A.I. Vorobiov, D.N. Shemyakin, S.V. Karpov, V.E. Shebalin, E. P. Solodov, A.A. Grebenuk, D. Epifanov, Vassili Kazanin, V.M. Titov, N.S. Bashtovoy, L.B. Epshteyn, and R.R. Akhmetshin

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Particle physics, Luminosity (scattering theory), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Detector, Magnetic detector, Atomic and Molecular Physics, and Optics, law.invention, Nuclear physics, law, Astrophysics::Solar and Stellar Astrophysics, High Energy Physics::Experiment, Collider, VEPP-2000, Astrophysics::Galaxy Astrophysics, Energy (signal processing)
Abstract

Regular data taking started at the VEPP-2000 e + e − collider with the CMD-3 detector. An energy scan of a center-of-mass energy range from 1 GeV to 2 GeV has been performed with an integrated luminosity of about 20 pb−1. We present first preliminary results from the CMD-3 detector.

Published
2012

27. 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

28. 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

29. 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

30. Measurement of the τ lepton mass at the KEDR detector

Author

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

Subjects
Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), law, Detector, Collider, Mass measurement, Lepton, law.invention
Abstract

A precise τ lepton mass measurement performed at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the τ+τ− cross section behavior around the production threshold. The result based on 6.7 pb−1 of data is m τ = 1776.81 −0.23 +0.25 ± 0.15 MeV. Using 0.8 pb−1 of data collected at the ψ′ peak, we have also determined that Γ ee B ττ(ψ′) = 9.0 ± 2.6 eV.

Published
2007

31. Current status of the luminosity measurement with the CMD-3 detector at the VEPP-2000 e+e− collider

Author

A.E. Bondar, B.A. Shwartz, A.S. Popov, A.E. Ryzhenenkov, A.S. Zaytsev, E.N. Gromov, D.B. Shwartz, E.A. Perevedentsev, V.M. Aulchenko, A.N. Kozyrev, I.B. Logashenko, N.M. Ryskulov, K.Yu. Mikhailov, Semen Eidelman, S.V. Karpov, P. Yu. Shatunov, Yu.S. Popov, D.E. Berkaev, S.E. Gayazov, A.S. Kuzmin, I.G. Snopkov, Yu.N. Pestov, A.L. Sibidanov, Yu. A. Rogovsky, A.A. Ruban, S.I. Redin, L.M. Barkov, A.E. Kuzmenko, B.I. Khazin, Yu. M. Shatunov, G.V. Fedotovich, A.V. Bragin, P.A. Lukin, D. Epifanov, Ivan Koop, A.V. Anisyonkov, V.E. Shebalin, L.B. Epshteyn, D.N. Shemyakin, V. S. Banzarov, Yu.V. Yudin, V.M. Titov, A.A. Grebenuk, Alexey Talyshev, Fedor Ignatov, A. P. Lysenko, S.G. Pivovarov, S. Pirogov, A.I. Vorobiov, N.S. Bashtovoy, E. P. Solodov, R.R. Akhmetshin, Vassili Kazanin, S.A. Ahokhin, and D.N. Grigoriev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Photon, Luminosity (scattering theory), Electron–positron annihilation, Hadron, Atomic and Molecular Physics, and Optics, law.invention, Nuclear physics, law, Radiative transfer, Collider, VEPP-2000, Bhabha scattering
Abstract

The first results of the luminosity measurement with the CMD-3 detector at the VEPP-2000 e + e − collider are presented. The luminosity was measured using two different processes e + e − → e + e − and e + e − → γ γ , that allowed to better understand and estimate the systematic accuracy which was found to be ∼2%. The analysis of the data was done on the integrated luminosity about 20 pb−1. A Monte-Carlo Generator Photon Jets (MCGPJ) [A.Arbuzov et al., EPJ C46, 689 (2006); S.Actis et al., EPJ C66, 585 (2010)] to simulate Bhabha scattering events as well as production of two photons was adopted for analysis of the data. A theoretical precision of these cross sections with radiative corrections (RC) is estimated to be better than 0.2%.

Published
2012

32. Z-chamber of the CMD-3 detector in the reconstruction of the track longitudinal coordinate

Author

Yu. A. Rogovsky, V.M. Titov, G.V. Fedotovich, V.Sh. Banzarov, S.I. Eidelman, V.S. Okhapkin, V.E. Shebalin, A.I. Vorobiov, V. L. Ivanov, N.S. Bashtovoy, Yu.V. Yudin, P.A. Lukin, S.E. Gayazov, D.N. Grigoriev, A.A. Ruban, D.E. Berkaev, A.E. Kuzmenko, A.S. Kasaev, A.V. Bragin, N.M. Ryskulov, L.B. Epshteyn, A.S. Popov, A.N. Amirkhanov, K.Yu. Mikhailov, D. B. Shwartz, Yu. M. Shatunov, A.L. Sibidanov, I. A. Koop, A.A. Grebenuk, A.S. Kuzmin, F.V. Ignatov, A. P. Lysenko, E. P. Solodov, P. Krokovny, D.N. Shemyakin, A.A. Korobov, V.M. Aulchenko, E.A. Perevedentsev, Yu.N. Pestov, A.N. Kozyrev, D. Epifanov, S.S. Gribanov, A.L. Erofeev, Vassili Kazanin, Alexey Talyshev, E.A. Kozyrev, A.E. Bondar, S.V. Karpov, Alexey Anisenkov, I.B. Logashenko, G.P. Razuvaev, B.A. Shwartz, A.E. Ryzhenenkov, and R.R. Akhmetshin

Subjects
Physics, Annihilation, Physics::Instrumentation and Detectors, Track (disk drive), Hadron, Detector, Particle detector, Computational physics, law.invention, law, Calibration, Measuring instrument, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Instrumentation, Mathematical Physics
Abstract

Since 2010 the CMD-3 detector has been collecting data at the e+e− collider VEPP-2000 in the Budker Institute of Nuclear Physics. One of the main goals of experiments with CMD-3 detector is the precise measurement of the cross sections of the e+e− annihilation into hadrons. For a large number of processes the main source of systematic uncertainty in cross sections determination due to accuracy of polar angles determination of the tracks. Z-chamber is used for the reconstruction of the track longitudinal coordinate which is with low systematic uncertainty. The measurement of longitudinal coordinates is performed by the collecting of the charge which is induced on the strip cathodes of the Z-chamber. The algorithms of the reconstruction of cathodes clusters and calibration procedure are presented.

Published
2017

33. Measurement of e+e− → π+π− cross section at CMD-3

Author

E.A. Perevedentsev, V. S. Banzarov, A.L. Erofeev, S.E. Gayazov, A.A. Ruban, Fedor Ignatov, S.I. Eidelman, N.M. Ryskulov, V.M. Aulchenko, A.S. Kuzmin, A.N. Kozyrev, A.L. Romanov, Yu.N. Pestov, D. B. Shwartz, A.E. Kuzmenko, D.N. Grigoriev, A. N. Kirpotin, A.S. Popov, Yu.V. Yudin, Alexey Anisenkov, Yu. A. Rogovsky, O.A. Kovalenko, V.M. Titov, S.V. Karpov, P.A. Lukin, K.Yu. Mikhailov, A.V. Bragin, Yu. M. Zharinov, Yu. M. Shatunov, D.N. Shemyakin, P. Yu. Shatunov, A.L. Sibidanov, P. Krokovny, B.I. Khazin, E. M. Gromov, G.V. Fedotovich, V.S. Okhapkin, A. P. Lysenko, A.A. Grebenuk, B.A. Shwartz, Alexey Talyshev, V.E. Shebalin, A.E. Ryzhenenkov, A.I. Vorobiov, E.A. Kozyrev, I. A. Koop, D. A. Epifanov, G. P. Razuvaev, E. P. Solodov, I.B. Logashenko, Vassili Kazanin, L.B. Epshteyn, D.E. Berkaev, R.R. Akhmetshin, and N.S. Bashtovoy

Subjects
Nuclear physics, Physics, Cross section (physics), Range (particle radiation), law, QC1-999, Detector, Statistical physics, Collider, law.invention
Abstract

Regular operation of the VEPP-2000 electron-positron collider started at the end of 2010 and about 60 pb −1 were collected so far by the CMD-3 detector in the whole available c.m. energy range from 0.32 GeV to 2.0 GeV. One of the main goals of the experiments at VEPP-2000 is a sub-percent measurement of the e + e − → π + π − cross-section. Here we present the overview of the data analysis techniques and the preliminary results of this measurement.

Published
2014

34. Study of the processes e+e− → K+K−π+π−, ϕη with the CMD-3 detector at the e+e− collider VEPP-2000

Author

S.E. Gayazov, E. M. Gromov, A.A. Ruban, B.A. Shwartz, A.E. Kuzmenko, N. Yu. Muchnoi, A.E. Ryzhenenkov, A.S. Popov, I.B. Logashenko, K.Yu. Mikhailov, Alexey Anisenkov, V.M. Titov, A.V. Bragin, V.M. Aulchenko, P. Yu. Shatunov, P. Krokovny, Yu. M. Shatunov, G.P. Razuvaev, A.N. Kozyrev, A.L. Romanov, D.N. Shemyakin, D. B. Shwartz, E.A. Perevedentsev, O.A. Kovalenko, V.E. Shebalin, S.V. Karpov, G.V. Fedotovich, A.I. Vorobiov, S.I. Eidelman, Yu.N. Pestov, N.S. Bashtovoy, A.L. Sibidanov, I. A. Koop, B.I. Khazin, N.M. Ryskulov, V.Sh. Banzarov, D.E. Berkaev, Alexey Talyshev, A.S. Kuzmin, A.E. Bondar, A.A. Grebenuk, F.V. Ignatov, E.A. Kozyrev, A.L. Erofeev, D. A. Epifanov, P.A. Lukin, L.B. Epshteyn, D.N. Grigoriev, E. P. Solodov, Vassili Kazanin, Yu.V. Yudin, V.S. Okhapkin, R.R. Akmetshin, and Yu. A. Rogovsky

Subjects
Nuclear physics, Physics, Range (particle radiation), law, QC1-999, Detector, Collider, VEPP-2000, lcsh:Physics, lcsh:QC1-999, law.invention
Abstract

We report preliminary results on the measurement of the cross sections of the processes e + e − → K + K − π + π − and e + e − → φη in the c.m.energy range from 1.5 GeV to 2 GeV with the CMD-3 detector. The cross sections of these processes agree with BaBar results and have better accuracy.

Published
2014

35. Study of the process e+e− → 2(π+π−π0) with the CMD-3 detector at VEPP-2000 collider

Author

Alexey Anisenkov, P. Yu. Shatunov, N.M. Ryskulov, A.L. Sibidanov, P. Krokovny, I.B. Logashenko, B.I. Khazin, Alexey Talyshev, E.A. Kozyrev, D. A. Epifanov, G.V. Fedotovich, V.Sh. Banzarov, G.P. Razuvaev, A.S. Popov, N. Yu. Muchnoi, A.V. Bragin, E.A. Perevedentsev, I. A. Koop, S.I. Eidelman, V.E. Shebalin, A.I. Vorobiov, A.E. Bondar, P.A. Lukin, K.Yu. Mikhailov, V.M. Titov, E. P. Solodov, L.B. Epshteyn, N.S. Bashtovoy, Yu. M. Shatunov, A.A. Grebenuk, B.A. Shwartz, D.N. Grigoriev, A.E. Ryzhenenkov, Yu.V. Yudin, O.A. Kovalenko, S.V. Karpov, Yu.N. Pestov, Vassili Kazanin, A.S. Kuzmin, A.E. Kuzmenko, R.R. Akmetshin, V.S. Okhapkin, Yu. A. Rogovsky, S.E. Gayazov, D.N. Shemyakin, A.A. Ruban, F.V. Ignatov, E. M. Gromov, A.L. Erofeev, D. B. Shwartz, D.E. Berkaev, V.M. Aulchenko, A.N. Kozyrev, and A.L. Romanov

Subjects
Physics, Range (particle radiation), Annihilation, Physics::Instrumentation and Detectors, QC1-999, Hadron, Detector, lcsh:QC1-999, law.invention, Nuclear physics, General purpose, law, High Energy Physics::Experiment, Collider, VEPP-2000, Energy (signal processing), lcsh:Physics
Abstract

Since 2010 the CMD-3 detector has been collecting data at the VEPP-2000 e + e − collider. CMD-3 is a general purpose detector designed to study e + e − annihilation into hadrons in the center-of-mass (c.m.) energy range from 0.3 up to 2 GeV. Preliminary results for the e + e − → 2(π + π − π 0 ) cross section were obtained in the c.m. energy range from 1.5 up to 2 GeV. The analysis is based on a data sample of 22 pb −1 .

Published
2014

36. Tau mass measurement at KEDR

Author

A.G. Shamov, 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.V. Bobrov, V.S. Bobrovnikov, A.V. Bogomyagkov, A.E. Bondar, D.V. Bondarev, A.R. Buzykaev, S.I. Eidelman, Yu.M. Glukhovchenko, V.V. Gulevich, S.E. Karnaev, G.V. Karpov, S.V. Karpov, V.A. Kiselev, S.A. Kononov, T.A. Kozlova, K.Yu. Kotov, E.A. Kravchenko, 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.I. Mishnev, I.I. Morozov, N.Yu. 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.S. Petrosyan, S.G. Pivovarov, P.A. Piminov, V.V. Petrov, A.O. Poluektov, I.N. Popkov, G.E. Pospelov, V.G. Prisekin, A.A. Ruban, V.K. Sandyrev, G.A. Savinov, D.N. Shatilov, B.A. Shwartz, E.A. Simonov, S.V. Sinyatkin, Yu.I. Skovpen, A.N. Skrinsky, V.V. Smaluk, A.M. Sukharev, E.V. Starostina, 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, V.V. Zhulanov, and A.N. Zhuravlev

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, law, Collider, Mass measurement, Atomic and Molecular Physics, and Optics, Lepton, law.invention
Abstract

The status of the experiment on the precise τ lepton mass measurement running at the VEPP-4M collider with the KEDR detector is reported. The mass value is evaluated from the τ + τ − cross section behavior around the production threshold. The preliminary result based on 15.2 pb −1 of data is m τ = 1776.69 −0.19 +0.17 ± 0.15 MeV .

Published
2009

37. Results from the e+e− colliders in Novosibirsk

Author

I.G. Snopkov, N.S. Bashtovoy, Yu.N. Pestov, Yu.V. Yudin, Yu. A. Rogovsky, A.E. Kuzmenko, B.A. Shwartz, N.M. Ryskulov, A.E. Ryzhenenkov, Yu.S. Popov, A.S. Popov, A.S. Zaytsev, A.E. Bondar, R.R. Akhmetshin, P.A. Lukin, A.V. Bragin, L.M. Barkov, A.I. Vorobiov, S.V. Karpov, D. Epifanov, Alexey Talyshev, D.N. Shemyakin, E.A. Perevedentsev, E. P. Solodov, K.Yu. Mikhailov, S.E. Gayazov, Fedor Ignatov, S.I. Eidelman, A.A. Ruban, S.I. Redin, E.N. Gromov, Yu. M. Shatunov, V.E. Shebalin, A.L. Sibidanov, Vassili Kazanin, D.E. Berkaev, V.M. Titov, S.A. Ahokhin, B.I. Khazin, V. S. Banzarov, S.G. Pivovarov, I.B. Logashenko, I. A. Koop, V.M. Aulchenko, A.N. Kozyrev, A.L. Romanov, S. Pirogov, P. Yu. Shatunov, G.V. Fedotovich, A.A. Grebenuk, A.S. Kuzmin, A.V. Anisonkov, A. P. Lysenko, D.N. Grigoriev, D.B. Shwartz, and L.B. Epshteyn

Subjects
Physics, Particle physics, Luminosity (scattering theory), Physics::Instrumentation and Detectors, Electron–positron annihilation, QC1-999, Detector, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract

Two e^+e^- colliders, VEPP-4M and VEPP2000, are taking data at the Budker INP in Novosibirsk, Russia. KEDR detector at the VEPP-4M collider continues deliver precision measurements of the charmonium family. Results of the psi(2S ) and psi(3770) study are presented. Two energy scans of a center-of-mass energy range from 1 GeV to 2 GeV has been performed by the VEPP2000 collider with an integrated luminosity of about 35 pb^-1, collected by each of the CMD-3 and SND detectors. This paper reports the latest results from VEPP-2000 obtained by the CMD-3 collaboration.

Published
2012

38. Hadron reactions study with the CMD-3 detector in e+e− collisions

Author

D.N. Grigoriev, O.A. Kovalenko, S.V. Karpov, S.S. Gribanov, A.L. Erofeev, A.A. Ruban, A.E. Kuzmenko, Fedor Ignatov, D. Epifanov, A.S. Kuzmin, A.S. Popov, I.B. Logashenko, Yu.V. Yudin, S.I. Eidelman, A.N. Amirkhanov, A.L. Sibidanov, V.M. Aulchenko, K.Yu. Mikhailov, Yu. M. Shatunov, V.E. Shebalin, B.A. Shwartz, G.P. Razuvaev, A.I. Vorobiov, V. L. Ivanov, Alexey Talyshev, S. E. Gayazo, A.A. Grebenuk, E.A. Kozyrev, V. S. Banzarov, P. Krokovny, A.E. Ryzhenenkov, A. V. Bragin, V.M. Titov, A.E. Bondar, G.V. Fedotovich, E. P. Solodov, A.A. Korobov, Alexey Anisenkov, Vassili Kazanin, N.S. Bashtovoy, Yu.N. Pestov, L.B. Epshteyn, N.M. Ryskulov, V.S. Okhapkin, P.A. Lukin, A.N. Kozyrev, and D.N. Shemyakin

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Luminosity (scattering theory), 010308 nuclear & particles physics, Computer Science::Information Retrieval, Electron–positron annihilation, Hadron, Astrophysics::Instrumentation and Methods for Astrophysics, General Physics and Astronomy, Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing), Astronomy and Astrophysics, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, Mass spectrum, Computer Science::General Literature, Intermediate state, High Energy Physics::Experiment, Invariant mass, 010306 general physics, Collider
Abstract

The CMD-3 detector has been taking data since December 2010 at the VEPP-2000 electron–positron collider. The collected data sample corresponds to about 60 inverse picobarn of integrated luminosity in the c.m. energy range from 0.32 GeV to 2.0 GeV. Preliminary results of the analysis of various hadronic cross-sections, in particular, [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], 3[Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text] are presented. The processes with multi-hadron final states have several intermediate states which have to be taken into account to correctly describe the angular and invariant mass distributions, as well as cross-section energy dependence.

Published
2016

39. High precision mass measurements in Ψ and ϒ families revisited

Author

A.S. Artamonov, S.E. Baru, A.E. Blinov, V.E. Blinov, A.E. Bondar, A.D. Bukin, A.G. Chilingarov, N.F. Denisov, S.I. Eidelman, Yu.I. Eidelman, V.R. Groshev, N.I. Inozemtsev, G.Ya. Kezerashvili, V.A. Kiselev, S.G. Klimenko, G.M. Kolachev, E.A. Kuper, L.M. Kurdadze, M.Yu. Lelchuk, S.I. Mishnev, S.A. Nikitin, A.P. Onuchin, E.V. Pakhtusova, V.S. Panin, V.V. Petrov, I.Ya. Protopopov, E.L. Saldin, A.G. Shamov, Yu.M. Shatunov, B.A. Shwartz, V.A. Sidorov, Yu.I. Skovpen, A.N. Skrinsky, V.A. Tayursky, V.I. Telnov, A.B. Temnykh, Yu.A. Tikhonov, G.M. Tumaikin, A.E. Undrus, A.I. Vorobiov, M.V. Yurkov, V.N. Zhilich, and A.A. Zholentz

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Physics::Instrumentation and Detectors, law, Radiative transfer, High Energy Physics::Experiment, Electron, Collider, Value (mathematics), law.invention
Abstract

High precision mass measurements in $\Psi$ and $\Upsilon$ families performed in 1980-1984 at the VEPP-4 collider with OLYA and MD-1 detectors are revisited. The corrections for the new value of the electron mass are presented. The effect of the updated radiative corrections has been calculated for the $J/\Psi(1S)$ and $\Psi(2S)$ mass measurements.

Published
2000

40. New precision measurement of the J/ψ- and ψʹ-meson masses

Author

Evgenii Baldin, D.V. Bondarev, S.E. Baru, Yu. A. Pakhotin, Evgeny Levichev, S. A. Balashov, I. B. Nikolaev, V.R. Groshev, Alexey Maslennikov, A. V. Zatsepin, V.N. Zhilich, Oleg Meshkov, V. V. Petrov, Valery I. Telnov, Sergey Peleganchuk, A. P. Onuchin, A. I. Naumenkov, A. R. Buzykaev, A. I. Shusharo, A. Bondar, S. S. Petrosyan, V.M. Aulchenko, N. Yu. Muchnoi, S.A. Kononov, K. Yu Todyshev, S. E. Mishnev, V.A. Tayursky, Sergey Karnaev, I. Bedny, K. A. Kotov, Olga Beloborodova, E. V. Kremyanskaya, A.G. Shamov, V.A. Sidorov, V. E. Blinov, A.A. Polunin, M.Yu. Barnyakov, A.I. Vorobiov, S.I. Eidelman, Andrey Soukharev, G.M. Tumaikin, A. V. Bogomyagkov, A.N. Skrinsky, Yu. V. Usov, V. A. Kiselev, E. A. Kravchenko, A. N. Yushkov, G.A. Savinov, A. E. Blinov, V. M. Malyshev, S.B. Oreshkin, E. A. Simonov, S.A. Nikitin, Yu. A. Tikhonov, Dmitry Shatilov, G. E. Pospelov, Alexey Talyshev, Yu I. Skovpen, Anton Poluektov, I. Ya. Protopopov, and B.A. Shwartz

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Accuracy and precision, Observational error, Meson, Electron–positron annihilation, Detector, Mass measurement, Absolute calibration, High Energy Physics - Experiment, law.invention, Nuclear physics, Error analysis, law, Calibration, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Beam energy
Abstract

A new high precision measurement of the $J/\psi$- and $\psi'$-meson masses has been performed at the VEPP-4M collider using the KEDR detector. The resonant depolarization method has been employed for the absolute calibration of the beam energy. The following mass values have been obtained: $M_{J/\psi} = 3096.917 \pm 0.010 \pm 0.007$ MeV, $M_{\psi'} = 3686.111 \pm 0.025 \pm 0.009$ MeV. The relative measurement accuracy has reached $4. 10^{-6}$ for $J/\psi$ and $7. 10^{-6}$ for $\psi'$, approximately 3 times better than in the previous precise experiments., Comment: 12 pages, 4 tables, 10 figures

Published
2004

41. Current status of luminosity measurement with the CMD-3 detector at the VEPP-2000 e+e− collider

Author

A.S. Kuzmin, Yu.S. Popov, Yu. A. Rogovsky, D. Epifanov, D.E. Berkaev, K.Yu. Mikhailov, E. P. Solodov, Alexey Anisenkov, V.S. Banzarov, E.A. Perevedentsev, A.V. Bragin, V.M. Aulchenko, Semen Eidelman, A.L. Erofeev, Yu.N. Pestov, A.N. Kozyrev, A.E. Kuzmenko, A.A. Grebenuk, Alexey Talyshev, Yu. M. Shatunov, Vassili Kazanin, I.B. Logashenko, R.R. Akhmetshin, E.A. Kozyrev, D. B. Shwartz, B.A. Shwartz, N.S. Bashtovoy, P. Krokovny, A. P. Lysenko, V.S. Okhapkin, A.E. Ryzhenenkov, Yu.V. Yudin, P.A. Lukin, L.B. Epshteyn, N.M. Ryskulov, V. L. Ivanov, G.P. Razuvaev, O.A. Kovalenko, Fedor Ignatov, A.L. Romanov, S.V. Karpov, D.N. Grigoriev, E. M. Gromov, A. N. Kirpotin, P. Yu. Shatunov, A.S. Popov, D.N. Shemyakin, G.V. Fedotovich, V.M. Titov, Yu. M. Zharinov, I. A. Koop, S.E. Gayazov, A.A. Ruban, V.E. Shebalin, A.I. Vorobiov, A.L. Sibidanov, and B.I. Khazin

Subjects
Physics, Measurement method, Particle physics, Luminosity (scattering theory), Astrophysics::High Energy Astrophysical Phenomena, Detector, Astrophysics::Cosmology and Extragalactic Astrophysics, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Current (fluid), Collider, Instrumentation, VEPP-2000, Astrophysics::Galaxy Astrophysics, Mathematical Physics, Energy (signal processing)
Abstract

Since December 2010 the CMD-3 detector has taken data at the electron-positron collider VEPP-2000. The collected data sample corresponds to an integrated luminosity of 60 pb−1 in the c.m. energy from 0.32 up to 2 GeV. The preliminary results of the luminosity measurement are presented in various energy ranges. The current accuracy for integrated luminosity is estimated to be 1%.

Published
2014

42. Precise measurements of the hadronic cross sections with the CMD-3 and SND detectors at the VEPP-2000e+e−collider

Author

L.V. Kardapoltsev, Z. K. Silagadze, Konstantin Beloborodov, Alexey Anisenkov, E.A. Perevedentsev, I.M. Zemlyansky, V.M. Titov, Yu. M. Shatunov, V. P. Druzhinin, Yu. A. Rogovsky, A. E. Obrazovsky, I.B. Logashenko, Yu. M. Zharinov, B.A. Shwartz, A.E. Ryzhenenkov, Alexey Kharlamov, Aleksandr Korol, E. M. Gromov, A.V. Vasiljev, P. Lukin, A. P. Lysenko, Yu.N. Pestov, A.A. Grebenuk, Yu.S. Popov, Alexey Talyshev, E. P. Solodov, S.E. Gayazov, K.Yu. Mikhailov, P. Yu. Shatunov, A.E. Kuzmenko, A.I. Vorobiov, K. A. Grevtsov, Yu.V. Yudin, A.A. Ruban, V. B. Golubev, N.M. Ryskulov, L.M. Barkov, E.A. Kozyrev, A. A. Botov, Vassili Kazanin, D. B. Shwartz, D.A. Shtol, A.S. Kuzmin, G.V. Fedotovich, I. K. Surin, D. A. Epifanov, Sergey Serednyakov, I. A. Koop, S.V. Koshuba, Fedor Ignatov, A.L. Sibidanov, Semen Eidelman, A. Yu. Barnyakov, B.I. Khazin, E.V. Pakhtusova, M. N. Achasov, P. Krokovny, A. N. Kirpotin, A.V. Dimova, A.V. Otboev, D.N. Shemyakin, G.P. Razuvaev, V.M. Aulchenko, O.A. Kovalenko, V.S. Okhapkin, A.N. Kozyrev, V.E. Shebalin, A.L. Romanov, D.N. Grigoriev, A.S. Popov, Alexander Bogdanchikov, K. A. Martin, A. S. Kupich, L.B. Epshteyn, A.L. Erofeev, D.E. Berkaev, V.S. Banzarov, R.R. Akhmetshin, A. V. Berdyugin, N.S. Bashtovoy, A.V. Bragin, D.P. Kovrizhin, A.E. Bondar, and S.V. Karpov

Subjects
Physics, Particle physics, Luminosity (scattering theory), Muon, Physics::Instrumentation and Detectors, QC1-999, Electron–positron annihilation, Hadron, Standard Model, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Collider, VEPP-2000, Fermi Gamma-ray Space Telescope
Abstract

It’s good known the difference in 3.5 sigma between the muon (g – 2) experimental result and its calculation in Standard Model. To clarify this intriguing discrepancy the new stage of muon (g – 2) measurement is under preparation at Fermi National Laboratory. On other hand, regular data taking for measurements of hadron cross section production in e + e − annihilations is under way since December 2010 at the electron-positron collider VEPP-2000 with the CMD-3 and SND detectors. The collected data sample corresponds to about 60 inverse picobarns of integrated luminosity per detector in the energy range from 0.32 up to 2 GeV. Preliminary analysis of various hadronic cross sections has been performed.

Published
2014

43. STUDY OF ψ(2S) → μ+μ- DECAY WITH KEDR DETECTOR

Author

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

Subjects
Nuclear physics, Physics, Particle physics, Luminosity (scattering theory), law, Detector, Collider, Value (mathematics), law.invention
Abstract

Since 2004 the KEDR detector at the VEPP-4M collider has taken several data sets in the ψ(2S) region, acquiring total luminosity of about 7 pb-1, which corresponds to more than 3.5 × 106ψ(2S). We report the preliminary value of Γee × Γμμ/Γ = 19.4 ± 0.4 ± 1.1 eV for ψ(2S).

Published
2014

44. PARAMETERS OF CHARMONIUM STATES FROM KEDR

Author

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

Subjects
Physics, Nuclear physics, Particle physics, Branching fraction, law, Detector, Collider, law.invention
Abstract

We report results of experiments performed with the KEDR detector at the VEPP-4M e+e- collider. They include final results for the mass and other parameters of the J/ψ, ψ(2S) and ψ(3770) and J/ψ → γηc branching fraction determination.

Published
2014

45. RESULTS AND PERSPECTIVES ON NUCLEON FORM FACTORS FROM SND AND CMD-3

Author

Yu. M. Shatunov, P.A. Lukin, E.A. Perevedentsev, Alexander Bogdanchikov, A. A. Botov, A.S. Kuzmin, P. Yu. Shatunov, K. A. Grevtsov, V.M. Aulchenko, D.N. Grigoriev, A.N. Kozyrev, L. V. Kardapoltsev, A.L. Romanov, A.S. Popov, Ilya Zemlyansky, D.E. Berkaev, A.L. Sibidanov, S. I. Serednyakov, O.A. Kovalenko, I. K. Surin, S.V. Karpov, G.V. Fedotovich, I. A. Koop, M. N. Achasov, S.V. Koshuba, B.I. Khazin, Alexey Kharlamov, Yu.V. Yudin, K.Yu. Mikhailov, K. A. Martin, V. P. Druzhinin, A. S. Kupich, S.E. Gayazov, A.V. Bragin, A. P. Lysenko, A.L. Erofeev, I.B. Logashenko, S.I. Eidelman, A.A. Grebenuk, Aleksandr Korol, V. S. Banzarov, A.A. Ruban, G.P. Razuvaev, Fedor Ignatov, A. N. Kirpotin, A.E. Kuzmenko, D.N. Shemyakin, V.M. Titov, Yu. M. Zharinov, E. M. Gromov, Z. K. Silagadze, Yu. A. Rogovsky, V.E. Shebalin, A.I. Vorobiov, A. E. Obrazovsky, D.P. Kovrizhin, L.B. Epshteyn, Yu.N. Pestov, B.A. Shwartz, Alexey Talyshev, A.E. Ryzhenenkov, N.M. Ryskulov, E.A. Kozyrev, D. A. Epifanov, T. V. Dimova, V. B. Golubev, A. Yu. Barnyakov, A. V. Vasiljev, P. Krokovny, E. P. Solodov, Vassili Kazanin, E. V. Pakhtusova, Yu.S. Popov, L.M. Barkov, D. A. Shtol, V.S. Okhapkin, A.E. Bondar, Konstantin Beloborodov, Alexey Anisenkov, R.R. Akhmetshin, A. V. Berdyugin, and N.S. Bashtovoy

Subjects
Nuclear physics, Physics, Particle physics, Near threshold, law, Form factor (quantum field theory), Nucleon, Collider, Measure (mathematics), law.invention
Abstract

During years 2011 and 2012 data taking runs have been carried out at VEPP-2000 e+e- collider to measure the production of the nucleon-antinucleon pairs [Formula: see text] near threshold. In this talk the preliminary results on the nucleon timelike electromagnetic form factors (FF) and the |GE/GM| ratio are presented.

Published
2014

46. MEASUREMENT OF THE $e^+e^- \to p \bar{p}$ CROSS SECTION WITH THE CMD-3 DETECTOR AT VEPP-2000

Author

E.A. Perevedentsev, D.N. Grigoriev, B.A. Shwartz, V.S. Okhapkin, Yu. M. Shatunov, A.E. Ryzhenenkov, D. B. Shwartz, E. P. Solodov, P.A. Lukin, A. P. Lysenko, S.I. Eidelman, V.E. Shebalin, Yu.V. Yudin, A.I. Vorobiov, Alexey Anisenkov, A.A. Grebenuk, Vassili Kazanin, A.S. Popov, A.L. Sibidanov, K.Yu. Mikhailov, B.I. Khazin, A.S. Kuzmin, Yu.S. Popov, D.E. Berkaev, Yu. A. Rogovsky, I.B. Logashenko, V.M. Aulchenko, L.M. Barkov, Yu.N. Pestov, A.N. Kozyrev, A.L. Romanov, S.E. Gayazov, V.M. Titov, A.L. Erofeev, I. A. Koop, A.E. Kuzmenko, Yu. M. Zharinov, A. N. Kirpotin, N.M. Ryskulov, A.A. Ruban, A.V. Bragin, D.N. Shemyakin, L.B. Epshteyn, Fedor Ignatov, V. S. Banzarov, P. Yu. Shatunov, G.V. Fedotovich, R.R. Akhmetshin, N.S. Bashtovoy, G.P. Razuvaev, Alexey Talyshev, O.A. Kovalenko, S.V. Karpov, E.A. Kozyrev, E. M. Gromov, D. A. Epifanov, and P. Krokovny

Subjects
Physics, Particle physics, Luminosity (scattering theory), Physics::Instrumentation and Detectors, Bar (music), Detector, law.invention, Nuclear physics, Event selection, Cross section (physics), law, High Energy Physics::Experiment, Collider, VEPP-2000, Energy (signal processing)
Abstract

We report preliminary results on the measurement of the [Formula: see text] cross section with the CMD-3 detector at the VEPP-2000 electron-positron collider based on 4.5 pb-1 of integrated luminosity collected in the c.m. energy range 1.92 - 2.0 GeV. Event selection using information from the Drift Chamber and Calorimeters provides a clean sample of [Formula: see text] events. The obtained results are in good agreement with the previous measurements.

Published
2014

47. HADRONIC CROSS SECTION MEASUREMENT AT CMD-3

Author

O.A. Kovalenko, S.V. Karpov, P.A. Lukin, V.E. Shebalin, A.I. Vorobiov, D.N. Grigoriev, Yu.S. Popov, E. M. Gromov, A.L. Erofeev, L.M. Barkov, E. P. Solodov, Yu. M. Shatunov, Yu.V. Yudin, A.L. Sibidanov, A.V. Bragin, B.I. Khazin, A.A. Grebenuk, D.E. Berkaev, S.E. Gayazov, Fedor Ignatov, A. P. Lysenko, A.S. Kuzmin, Vassili Kazanin, L.B. Epshteyn, A.A. Ruban, A. N. Kirpotin, D.N. Shemyakin, A.S. Popov, E.A. Perevedentsev, Yu. A. Rogovsky, V.M. Titov, D. B. Shwartz, R.R. Akhmetshin, Yu. M. Zharinov, P. Yu. Shatunov, K.Yu. Mikhailov, N.S. Bashtovoy, S.I. Eidelman, G.V. Fedotovich, V.S. Okhapkin, V.M. Aulchenko, A.N. Kozyrev, A.L. Romanov, I. A. Koop, P. Krokovny, Alexey Talyshev, V. S. Banzarov, N.M. Ryskulov, E.A. Kozyrev, Alexey Anisenkov, B.A. Shwartz, A.E. Ryzhenenkov, D. A. Epifanov, I.B. Logashenko, G.P. Razuvaev, Yu.N. Pestov, and A.E. Kuzmenko

Subjects
Nuclear physics, Physics, Cross section (physics), Particle physics, Range (particle radiation), law, Hadron, Detector, Collider, law.invention
Abstract

The VEPP-2000 electron-positron collider was commissioned in 2010. About 60 pb-1 were collected so far by CMD-3 detector in the whole available c.m. energy range from 0.32 GeV to 2.0 GeV. The preliminary results of data analysis for various modes of e+e− → hadrons are discussed.

Published
2014

48. STUDY OF THE PROCESS e+e- → K+K-π+π- WITH THE CMD-3 DETECTOR AT THE VEPP-2000 e+e- COLLIDER

Author

Yu.S. Popov, N.S. Bashtovoy, Alexey Anisenkov, L.M. Barkov, P. Yu. Shatunov, E. P. Solodov, G.V. Fedotovich, D.E. Berkaev, R.R. Akhmetshin, A.A. Grebenuk, Vassili Kazanin, N.M. Ryskulov, E.A. Perevedentsev, V.M. Titov, A.L. Erofeev, Yu. M. Zharinov, V. S. Banzarov, P.A. Lukin, S.E. Gayazov, A.V. Bragin, O.A. Kovalenko, S.V. Karpov, A.A. Ruban, V.S. Okhapkin, A.S. Kuzmin, Fedor Ignatov, A.S. Popov, L.B. Epshteyn, E. M. Gromov, V.E. Shebalin, A.I. Vorobiov, A.L. Sibidanov, K.Yu. Mikhailov, I.B. Logashenko, B.I. Khazin, S.I. Eidelman, Yu. M. Shatunov, A. P. Lysenko, I. A. Koop, P. Krokovny, Yu.V. Yudin, Yu. A. Rogovsky, A. N. Kirpotin, D.N. Grigoriev, D.N. Shemyakin, V.M. Aulchenko, Yu.N. Pestov, A.N. Kozyrev, A.L. Romanov, A.E. Kuzmenko, D. B. Shwartz, B.A. Shwartz, A.E. Ryzhenenkov, Alexey Talyshev, E.A. Kozyrev, D. A. Epifanov, and G.P. Razuvaev

Subjects
Nuclear physics, Physics, Particle physics, Range (particle radiation), law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hadron, Detector, Collider, VEPP-2000, law.invention, Luminosity
Abstract

We report preliminary results on the measurement of the cross section of the process e+e- → K+K-π+π- in the c.m. energy range from 1.5 GeV to 2 GeV. It is shown that the cross section is dominated by the contributions of several intermediate states K+K-ρ, K*Kπ, ϕπ+π- and K*K*.

Published
2014

49. Measurement of ψ(3770) parameters

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Partial width, Meson, law, Electron–positron annihilation, Form factor (quantum field theory), Resonance, Electron, Atomic physics, Collider, High Energy Physics - Experiment, law.invention
Abstract

We report the final results of a study of the ψ ( 3770 ) meson using a data sample collected with the KEDR detector at the VEPP-4M electron–positron collider. The data analysis takes into account interference between the resonant and nonresonant D D ¯ production, where the latter is related to the nonresonant part of the energy-dependent form factor F D . The vector dominance approach and several empirical parameterizations have been tried for the nonresonant F D N R ( s ) . Our results for the mass and total width of ψ ( 3770 ) are M = 3779.2 − 1.7 + 1.8 − 0.7 + 0.5 − 0.3 + 0.3 MeV , Γ = 24.9 − 4.0 + 4.6 − 0.6 + 0.5 − 0.9 + 0.2 MeV , where the first, second and third uncertainties are statistical, systematic and model, respectively. For the electron partial width two possible solutions have been found: ( 1 ) Γ e e = 154 − 58 + 79 − 9 + 17 − 25 + 13 eV , ( 2 ) Γ e e = 414 − 80 + 72 − 26 + 24 − 10 + 90 eV . Our statistics are insufficient to prefer one solution to another. The Solution (2) mitigates the problem of non- D D ¯ decays but is disfavored by potential models. It is shown that taking into account the resonance–continuum interference in the near-threshold region affects resonance parameters, thus the results presented cannot be directly compared with the corresponding PDG values obtained ignoring this effect.

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50. Recent results on e+e−→hadrons cross sections from SND and CMD-3 detectors at VEPP-2000 collider

Author

Semen Eidelman, I.M. Zemlyansky, S. I. Serednyakov, S.E. Gayazov, A.S. Popov, A.A. Ruban, D.N. Grigoriev, D.E. Berkaev, A. A. Botov, A.S. Kuzmin, S.V. Koshuba, K.Yu. Mikhailov, A.L. Erofeev, R.R. Akmetshin, A.V. Bragin, A.S. Kasaev, Alexander Bogdanchikov, P.A. Lukin, I. K. Surin, A.A. Grebenuk, A. V. Berdyugin, N.S. Bashtovoy, V.E. Shebalin, A. E. Obrazovsky, A.L. Sibidanov, B.I. Khazin, Yu.V. Yudin, A.Yu. Barnyakov, A.I. Senchenko, A.V. Otboev, V.S. Okhapkin, G.V. Fedotovich, E. P. Solodov, Ju.A. Tikhonov, Alexey Kharlamov, Vassili Kazanin, V. P. Druzhinin, E. V. Pakhtusova, P. Krokovny, V.M. Titov, A.I. Vorobiov, Alexey Talyshev, E.A. Kozyrev, D. A. Epifanov, Y. Usov, I.B. Logashenko, Ju.M. Shatunov, M. N. Achasov, A.N. Skrinsky, B.A. Shwartz, G.P. Razuvaev, A.E. Ryzhenenkov, Konstantin Beloborodov, Alexey Anisenkov, L.B. Epshteyn, F.V. Ignatov, E. M. Gromov, O.A. Kovalenko, K.A. Martin, P.Ju. Shatunov, A.E. Bondar, S.V. Karpov, A. N. Kirpotin, V. B. Golubev, D.N. Shemyakin, D. P. Kovrizhin, V.Sh. Banzarov, N.M. Ryskulov, D. B. Shwartz, L.V. Kardapoltsev, T.V. Dimova, Z. K. Silagadze, A.S. Kupich, A.V. Vasiljev, Aleksandr Korol, D. A. Shtol, V.M. Aulchenko, A.N. Kozyrev, Yu.N. Pestov, and A.E. Kuzmenko

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Range (particle radiation), Muon, Meson, 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Electron–positron annihilation, Hadron, Nuclear Theory, 01 natural sciences, law.invention, Nuclear physics, law, Excited state, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Collider, Nuclear Experiment, VEPP-2000
Abstract

Recent results on various cross sections of e + e − → h a d r o n s obtained with the SND and CMD3 detectors at the VEPP-2000 collider in the energy range up to 2 GeV are presented. The final states studied include e + e − → π + π − , K + K − , π + π − π 0 , π + π − π 0 π 0 , η π + π − , ωη, ηγ and others. The measured cross sections are important since they contribute to the total hadronic cross section, muon g-2 and parameters of excited vector mesons. The nucleon-antinucleon production at threshold was also studied.

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