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39 results on '"E.A. Kozyrev"'

1. Recent results from the CMD-3 detector

Author

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

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

This paper reports a current status of the measurements of the hadronic cross sections in the c.m. energy range from 0.32 to 2.0 GeV with the CMD-3 detector at the VEPP-2000 electron-positron collider. The overall size of the data, acquired by the CMD-3 in the runs of 2010–2013 and 2017–2018 years, is about 160 pb−1. The results of data analysis for various exclusive modes of e + e − → h a d r o n s are described.

Published
2020

2. 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

3. 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

4. Charged particle identification with the liquid xenon calorimeter of the CMD-3 detector

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Muon, Calorimeter (particle physics), Physics::Instrumentation and Detectors, chemistry.chemical_element, Particle identification, Charged particle, law.invention, Nuclear physics, Xenon, Pion, chemistry, law, High Energy Physics::Experiment, Collider, Instrumentation
Abstract

The paper describes a method of the charged particle identification, developed for the CMD-3 detector, installed at the VEPP-2000 e + e − collider. The method is based on application of boosted decision trees classifiers, trained for the optimal separation of electrons, muons , pions and kaons in the momentum range from 100 to 1200 MeV / c . The input variables for the classifiers are linear combinations of the energy depositions of charged particles in 12 layers of the liquid xenon calorimeter of the CMD-3. The event samples for training of the classifiers are taken from the simulation. Various issues of the calorimeter strip channels response simulation and their calibration are considered. Application of the method is illustrated by the examples of separation of the e + e − ( γ ) and π + π − ( γ ) final states and of selection of the K + K − final state at high energies.

Published
2021

5. Study of the process e + e − → π + π − π 0 η in the c.m. energy range 1394–2005 MeV with the CMD-3 detector

Author

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

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), 010308 nuclear & particles physics, Electron–positron annihilation, Detector, Analytical chemistry, 01 natural sciences, lcsh:QC1-999, Lower energy, High Energy Physics - Experiment, law.invention, law, 0103 physical sciences, Pi, Intermediate state, High Energy Physics::Experiment, 010306 general physics, Collider, lcsh:Physics, Energy (signal processing)
Abstract

The cross section of the process $e^+e^- \to \pi^+\pi^-\pi^0\eta$ has been measured using a data sample of 21.8 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. 2769$\pm$95 signal events have been selected in the center-of-mass energy range 1394--2005 MeV. The production dynamics is dominated by the $\omega(782)\eta$ and $\phi(1020)\eta$ intermediate states in the lower energy range, and by the $a_0(980)\rho(770)$ intermediate state at higher energies., Comment: 20 pages, 11 figures, 2 tables

Published
2017

6. Cross sections of hadronic reactions e + e − → K + K − nπ (n =1,2,3) measured with the CMD3 detector at the VEPP-2000 electron–positron collider

Author

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

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

We analyze the data on e + e − collisions at c.m.s. energies between 0.32 and 2 GeV collected in 2011–2013 with the CMD3 detector operating at the VEPP-3 e + e − collider of the Budker Institute of Nuclear Physics. The data correspond to an integrated luminosity of nearly 60 pb-1. Preliminary results e + e − → K + K − nπ (n = 1, 2, 3) on the reactions with two charged kaons in the final state are presented, and the procedure for estimating the integrated luminosity for each energy setting is described.

Published
2017

7. Study of $e^+e^-\to e^+e^- \eta'$ in the double-tag mode at BABAR

Author

Vladimir Druzhinin and E.A. Kozyrev

Subjects
Physics, Particle physics, law, Mathematics::Number Theory, Star (game theory), Form factor (quantum field theory), High Energy Physics::Experiment, Nuclear Experiment, Collider, law.invention, Luminosity
Abstract

We study the process $e^+e^-\to e^+e^- \eta'$ in the double-tag mode and measure for the first time the $\gamma^{\star}\gamma^{\star} \to \eta'$ transition form factor $F_{\eta'}(Q_1^2, Q_2^2)$ in the momentum-transfer range \mbox{2 $

Published
2019

8. 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

9. 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

10. Recent BaBar results in light hadron spectroscopy

Author

Vladimir Druzhinin, E.A. Kozyrev, and Evgeny Solodov

Subjects
Physics, 010308 nuclear & particles physics, QC1-999, Form factor (quantum field theory), BaBar experiment, 01 natural sciences, law.invention, Nuclear physics, Full data, law, TheoryofComputation_ANALYSISOFALGORITHMSANDPROBLEMCOMPLEXITY, Hadron spectroscopy, 0103 physical sciences, 010306 general physics, Collider
Abstract

We report the results on the channels e+e−→ π+π−π0π0π0(η), e+e−→ π+π−η. Also we present the study of the two-photon process e+e−→ e+e−η' in the double-tag mode. The results for the form factor are compared with the predictions based on pQCD and VMD. The results are obtained by using the full data set of about 470 fb−1 collected by the BABAR experiment at the PEP-II e+e−collider at a center-of-mass energy of about 10.6 GeV.

Published
2019

11. 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

12. 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

13. 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

14. 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

15. 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

16. 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

17. 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

18. 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

19. Study of the e+e- -> hadrons reactions with CMD-3 detector at VEPP-2000 collider

Author

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

Subjects
Physics, Muon, Luminosity (scattering theory), Anomalous magnetic dipole moment, Electron–positron annihilation, Hadron, law.invention, Nuclear physics, Pion, law, High Energy Physics::Experiment, Nuclear Experiment, Collider, VEPP-2000
Abstract

The CMD-3 detector is taking data at the VEPP-2000 $e^+e^-$ collider (Budker INP, Novosibirsk, Russia). The main goal of experiments with CMD-3 is the measurement of the cross-sections and dynamics of the exclusive modes of $e^+e^- \to hadrons$ reactions. In particular, these results provide important input for calculation of the hadronic contribution to the muon anomalous magnetic moment. First round of data taking with the CMD-3 detector was performed in 2011-2013 with about 60 1/pb integrated luminosity in the energy range from 0.32 to 2.0 GeV in center-of-mass. Amount of collected data exceeds all previous experiments. Here we present the survey of results of data taken in 2011-2013, including precise measurement of $e^+e^-\to \pi^+\pi^-$ reaction, as well as other hadron final states with up to 6 pions or states include 2 kaons. At the end of 2016 the VEPP-2000 collider resumed operations after upgrade of the injection system, and performance approaching to the project luminosity of $10^{32}\ cm^{-2}s^{-1}$ at 2 GeV has been demonstrated. First preliminary results of new 2017 run are also presented.

Published
2017

20. 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

21. 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

22. 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

23. 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

24. 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

25. 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

26. 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

27. Cross section measurement of the process e+e− → K+K−π+π− at the VEPP 2000 collider with the CMD-3 detector

Author

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

Subjects
Physics, Range (particle radiation), Particle physics, Annihilation, Luminosity (scattering theory), Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Detector, Hadron, Electron, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Collider, VEPP-2000
Abstract

Experiments with the CMD-3 detector at the electron-positron collider VEPP-2000 started in 2010. 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 to2 GeV. The cross section of the process e+e− → K+ K−π+π− has been measured using 23 pb−1 of integrated luminosity collected in the c.m. energy range 1.5 – 2.0 GeV.

Published
2016

28. 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

29. 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

30. 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

31. 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

32. 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

33. 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

34. 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

35. 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

36. 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

37. 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

38. 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

39. 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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