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1. Study of the process $e^+e^-{\to}K^+K^-\eta$ with the CMD-3 detector at the VEPP-2000 collider

Author

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

Subjects
High Energy Physics - Experiment
Abstract

The process $e^+e^-{\to}K^+K^-\eta$ has been studied in the center-of-mass energy range from 1.59 to 2.007\,GeV using the data sample of 59.5 pb$^{-1}$, collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider in 2011, 2012 and 2017. The $K^+K^-\eta$ final state is found to be dominated by the contribution of the $\phi(1020)\eta$ intermediate state. The cross section of the process $e^+e^-{\to}\phi(1020)\eta$ has been measured with a systematic uncertainty of 5.1$\%$ on the base of 3009 $\pm$ 67 selected events. The obtained cross section has been used to calculate the contribution to the anomalous magnetic moment of the muon: $a_{\mu}^{\phi\eta}(E<1.8\, {\rm GeV})=(0.321 \pm 0.015_{\rm stat} \pm 0.016_{\rm syst}) \times 10^{-10}$, $a_{\mu}^{\phi\eta}(E<2.0\, {\rm GeV})=(0.440 \pm 0.015_{\rm stat} \pm 0.022_{\rm syst}) \times 10^{-10}$. From the cross section approximation the $\phi(1680)$ meson parameters have been determined with better statistical precision, than in previous studies.

Published
2019
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2. 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

Fedotovich, G. V., Erofeev, A. L., Ivanov, V. L., Ryzhenenkov, A. E., Shemyakin, D. N., Anisenkov, A. V., Aulchenko, V. M., Akhmetshin, R. R., Banzarov, V. S., Bashtovoy, N. S., Berkaev, D. E., Bondar, A. E., Bragin, A. V., Vorobiev, A. I., Eidelman, S. I., Epifanov, D. A., Epshteyn, L. B., Gayazov, S. E., Grebenuk, A. A., Gribanov, S. S., Grigoriev, D. N., Ignatov, F. V., Jarinov, Yu. M., Kazanin, V. F., Kasaev, A. S., Karpov, S. V., Kirpotin, A. N., Kovalenko, O. A., Kozyrev, A. N., Kozyrev, E. A., Koop, I. A., Korobov, A. A., Krokovny, P. P., Kuzmenko, A. E., Kuzmin, A. S., Logashenko, I. B., Lukin, P. A., Lysenko, A. P., Mikhailov, K. Yu., Okhapkin, V. S., Perevedentsev, E. A., Pestov, Yu. N., Popov, A. S., Razuvaev, G. P., Rogovsky, Yu. A., Romanov, A. L., Ruban, A. A., Ryskulov, N. M., Sibidanov, A. L., Solodov, E. P., Talyshev, A. A., Titov, V. M., Shatunov, P. Yu., Shatunov, Yu. M., Shwartz, B. A., Shwartz, D. B., Shebalin, V. E., Yudin, Yu. V., and CMD-3 Collaboration

Published
2017
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3. Measurement of the e + e − → π+π−π0 cross section with the CMD-3 detector

Author

Kovalenko, O. A., Akhmetshin, R. R., Amirkhanov, A. N., Anisenkov, A. V., Aulchenko, V. M., Banzarov, V. S., Bashtovoy, N. S., Berkaev, D. E., Bondar, A. E., Bragin, A. V., Eidelman, S. I., Epifanov, D. A., Epshteyn, L. B., Erofeev, A. L., Fedotovich, G. V., Gayazov, S. E., Grebenuk, A. A., Gribanov, S. S., Grigoriev, D. N., Ignatov, F. V., Ivanov, V. L., Karpov, S. V., Kazanin, V. F., Kasaev, A. S., Kovalenko, O. A., Koop, I. A., Korobov, A. A., Kozyrev, A. N., Kozyrev, E. A., Krokovny, P. P., Kuzmenko, A. E., Kuzmin, A. S., Logashenko, I. B., Lukin, P. A., Lysenko, A. P., Mikhailov, K. Yu., Okhapkin, V. S., Perevedentsev, E. A., Pestov, Yu. N., Popov, A. S., Razuvaev, G. P., Rogovsky, Yu. A., Ruban, A. A., Ryskulov, N. M., Ryzhenenkov, A. E., Shebalin, V. E., Shemyakin, D. N., Shwartz, B. A., Shwartz, D. B., Sibidanov, A. L., Shatunov, Yu. M., Solodov, E. P., Titov, V. M., Talyshev, A. A., Vorobiov, A. I., Yudin, Yu. V., and CMD-3 collaboration

Published
2017
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4. Preliminary results of the cross-section measurement of e+e− → φ(1020)η process with the CMD-3 detector at VEPP-2000 collider

Author

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

Published
2016
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5. Barrel calorimeter of the CMD-3 detector

Author

Shebalin, V. E., Anisenkov, A. V., Aulchenko, V. M., Bashtovoy, N. S., Epifanov, D. A., Epshteyn, L. B., Grebenuk, A. A., Ignatov, F. V., Erofeev, A. L., Kovalenko, O. A., Kozyrev, A. N., Kuzmin, A. S., Logashenko, I. B., Mikhailov, K. Yu., Razuvaev, G. P., Ruban, A. A., Shwartz, B. A., Talyshev, A. A., Titov, V. M., and Yudin, Yu. V.

Published
2015
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6. Study of π+π−π+π− production with CMD-3 detector at the VEPP-2000 collider

Author

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

Subjects
Physics, QC1-999
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
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7. 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

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

Subjects
Physics, QC1-999
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
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8. Search for the process e+e−→D*(2007) with the CMD-3 detector

Author

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

Subjects
Physics, QC1-999
Abstract

A search for the process e+e−→ D*0(2007) has been performed with the CMD-3 detector at the VEPP-2000 e+e−-collider. Two main decay modes of the D*0(2007) decay, D0π0 and D0γ, followed by D0 → K+π−π+π−are used in this analysis. With an integrated luminosity of 3.7 pb−1 collected at the center-of-mass energy Ec.m. =2006.62 MeV our preliminary upper limit is BD*0→e+ e−

Published
2019
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9. Study of the process e+e-→π+π-γ with the CMD-3 detector at the e+e- collider VEPP-2000

Author

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

Subjects
Physics, QC1-999
Abstract

Existing Monte-Carlo generators with radiative corrections to the e+e-→π+π- process are usually developed under the assumption that pions can be treated as pointlike particles. We study the e+e-→π+π-γ process with final-state radiation and test this assumption using simulated events from the MCGPJ generator based on the scalar QED hypothesis. In order to increase a fraction of events with FSR, the analysis was performed in the energy region to the left from the ρ-meson peak (660÷785 MeV) that is based on the integrated luminosity of about 8.4 pb-1. The experimental data for the photon energy spectrum agree with the simulation results at 1% level.

Published
2019
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10. The NNbar and multihadron production at the threshold at VEPP2000

Author

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

Subjects
Physics, QC1-999
Abstract

A study of hadron production at the nucleon-antinucleon threshold has been performed with the CMD-3 detector at the VEPP-2000 e+e− collider. A very fast rise with an about 1 MeV width has been observed in the e+e−→ pp̅ cross section. A sharp drop in the e+ e−→ 3(π+π−) cross section has been con?rmed and found to have a width of less than 2 MeV, in agreement with the observed fast rise of the e+e−→ pp̅ cross section. For the ?rst time a similar sharp drop is demonstrated in the e+e−→ K+ K−π+π− cross section. The behavior of the e+e−→ 3(π+ π−), K+ K−π+π− cross sections cannot be explained by an interference of any resonance amplitude with continuum, therefore this phenomenon cannot be due to a narrow near-threshold resonance. No such structure has been observed in the e+e−→ 2(π+π−) cross section.

Published
2019
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11. Recent results from CMD-3

Author

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

Subjects
Physics, QC1-999
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
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12. Study of the e+e−→ KS KLπ0 process up to 2 GeV with the CMD-3 detector at the VEPP-2000 collider

Author

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

Subjects
Physics, QC1-999
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
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13. 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

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

Subjects
Physics, QC1-999
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
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14. Recent results of the hadronic cross section measurements with the CMD-3 detector at e+e− collider VEPP-2000

Author

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

Subjects
Physics, QC1-999
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
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15. Preliminary results of measurements of hadronic cross sections with the CMD-3 detector at the VEPP-2000 electron–positron collider

Author

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

Published
2015
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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

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

Published
2015
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17. Investigation of the process e + e − → K + K − with the aid of the CMD-3 detector at the VEPP-2000 electron-positron collider

Author

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

Published
2015
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18. Search for the ϕ → π+π−γγ and ϕ → π+π−η decays with the CMD-2 detector

Author

Aul’chenko, V. M., Akhmetshin, R. R., Banzarov, B. Sh., Barkov, L. M., Bashtovoi, N. S., Bondar’, A. E., Bragin, A. V., Grebenyuk, A. A., Grigor’ev, D. N., Epifanov, D. A., Zaitsev, A. S., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., Koop, I. A., Krokovny, P. P., Kuz’min, A. S., Logashenko, I. B., Lukin, P. A., Mikhailov, K. Yu., Nesterenko, I. N., Otboev, A. V., Okhapkin, V. S., Perevedentsev, E. A., Popov, A. S., Redin, S. I., Ruban, A. A., Ryskulov, N. M., Sibidanov, A. L., Smakhtin, V. P., Snopkov, I. G., Solodov, E. P., Fedotovich, G. V., Khazin, B. I., Shatunov, Yu. M., Shvarts, B. A., Eidel’man, S. I., and Yudin, Yu. V.

Published
2008
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19. Overview of the CMD-3 recent results at e+e− collider VEPP-2000

Author

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

Subjects
Physics, QC1-999
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
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20. The CMD-2 cryogenic magnetic detector

Author

Anashkin, E. V., Aul’chenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Baru, S. E., Bashtovoi, N. S., Bondarev, D. V., Bondar’, A. E., Bragin, A. V., Gabyshev, N. I., Gorbachev, D. A., Grebenyuk, A. A., Grigor’ev, D. N., Epifanov, D. A., Zhuravkov, I. V., Zavarzin, V. G., Zaitsev, A. S., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., Kolachev, G. M., Krokovnyi, P. P., Kuz’min, A. S., Logashenko, I. B., Lukin, P. A., Mikhailov, K. Yu., Monich, V. A., Nikulin, M. A., Nomerotskii, A. B., Okhapkin, V. S., Pivovarov, S. G., Popov, A. S., Purlats, T. A., Redin, S. I., Root, N. I., Ruban, A. A., Ryskulov, N. M., Sibidanov, A. L., Sidorov, V. A., Skrinskii, A. N., Smakhtin, V. P., Snopkov, I. G., Solodov, E. P., Stepanov, P. Yu., Sukhanov, A. I., Titov, V. M., Fedorenko, V. E., Fedotovich, G. V., Khazin, B. I., Shamov, A. G., Shatunov, Yu. M., Shvarts, B. A., Shuvalov, B. N., Chernyak, D. V., Eidel’man, S. I., and Yudin, Yu. V.

Published
2006
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21. Measurement of the e+e− → π+π− cross section with the CMD-2 detector in the 370–520-MeV energy range

Author

Aul’chenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Bashtovoĭ, N. S., Bondarev, D. V., Bondar’, A. E., Bragin, A. V., Gabyshev, N. I., Gorbachev, D. A., Grebenyuk, A. A., Grigor’ev, D. N., Dhawan, S. K., Epifanov, D. A., Zaĭtsev, A. S., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., Koop, I. A., Krokovny, P. P., Kuz’min, A. S., Logashenko, I. B., Lukin, P. A., Lysenko, A. P., Mil’shteĭn, A. I., Mikhaĭlov, K. Yu., Nesterenko, I. N., Nikulin, M. A., Otboev, A. V., Okhapkin, V. S., Perevedentsev, E. A., Popov, A. S., Redin, S. I., Roberts, B. L., Root, N. I., Ruban, A. A., Ryskulov, N. M., Sibidanov, A. L., Sidorov, V. A., Skrinsky, A. N., Smakhtin, V. P., Snopkov, I. G., Solodov, E. P., Thompson, J. A., Fedotovich, G. V., Khazin, B. I., Hughes, V. W., Shamov, A. G., Shatunov, Yu. M., Shvarts, B. A., Éĭdel’man, S. I., and Yudin, Yu. V.

Published
2006
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22. Measurement of the pion form factor in the range 1.04–1.38 GeV with the CMD-2 detector

Author

Aul’chenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Bashtovoi, N. S., Bondarev, D. V., Bondar’, A. E., Bragin, A. V., Valishev, A. A., Gabyshev, N. I., Gorbachev, D. A., Grebenyuk, A. A., Grigor’ev, D. N., Dhawan, S. K., Epifanov, D. A., Zaitsev, A. S., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., Koop, I. A., Krokovny, P. P., Kuz’min, A. S., Logashenko, I. B., Lukin, P. A., Lysenko, A. P., Mil’shtein, A. I., Mikhailov, K. Yu., Nesterenko, I. N., Nikulin, M. A., Otboev, A. V., Okhapkin, V. S., Perevedentsev, E. A., Polunin, A. A., Popov, A. S., Redin, S. I., Roberts, B. L., Root, N. I., Ruban, A. A., Ryskulov, N. M., Sibidanov, A. L., Sidorov, V. A., Skrinsky, A. N., Smakhtin, V. P., Snopkov, I. G., Solodov, E. P., Thompson, J. A., Fedotovich, G. V., Khazin, B. I., Hughes, V. W., Shamov, A. G., Shatunov, Yu. M., Shwartz, B. A., Éidel’man, S. I., and Yudin, Yu. V.

Published
2005
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23. Measurement of the cross section for the process e + e − → K L0 K S0 in the energy range 2E=1.05–1.38 GeV with the CMD-2 detector at VEPP-2M

Author

Anashkin, E. V., Aulchenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Baru, S. E., Bashtovoy, N. S., Bondarev, D. V., Bondar, A. E., Bragin, A. V., Gabyshev, N. I., Gorbachev, D. A., Grebeniuk, A. A., Grigoriev, D. N., Dhawan, S. K., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., Koop, I. A., Krokovny, P. P., Kuzmin, A. S., Kurdadze, L. M., Logashenko, I. B., Lukin, P. A., Lysenko, A. P., Mikhailov, K. Yu., Nesterenko, I. N., Okhapkin, V. S., Polunin, A. A., Popov, A. S., Roberts, B. L., Root, N. I., Ruban, A. A., Ryskulov, N. M., Sibidanov, A. L., Sidorov, V. A., Skrinsky, A. N., Smakhtin, V. P., Snopkov, I. G., Solodov, E. P., Stepanov, P. Yu., Sukhanov, A. I., Thompson, J. A., Fedotovich, G. V., Khazin, B. I., Hughes, W. V., Chernyak, D. V., Shamov, A. G., Shatunov, Yu. M., Shwartz, B. A., Eidelman, S. I., and Yudin, Yu. V.

Published
2002
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25. Hadron reactions study with the CMD-3 detector in e e collisions.

Author

Solodov, E. P., Amirkhanov, A. N., Anisenkov, A. V., Aulchenko, V. M., Banzarov, V. S., Bashtovoy, N. S., Bondar, A. E., Bragin, A. V., Eidelman, S. I., Epifanov, D. A., Epshteyn, L. B., Erofeev, A. L., Fedotovich, G. V., Gayazo, S. E., Grebenuk, A. A., Gribanov, S. S., Grigoriev, D. N., Ignatov, F. V., Ivanov, V. L., and Karpov, S. V.

Subjects
HADRON interactions, HADRONS, ELECTRON-positron interactions, HADRON colliders, ENERGY security
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, , , , , , 3, , , , , , and 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. [ABSTRACT FROM AUTHOR]

Published
2016
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26. MEASUREMENT OF THE CROSS SECTION WITH THE CMD-3 DETECTOR AT VEPP-2000.

Author

AKHMETSHIN, R. R., ANISENKOV, A. V., AULCHENKO, V. M., BANZAROV, V. S., BARKOV, L. M., BASHTOVOY, N. S., BERKAEV, D. E., BRAGIN, A. V., EIDELMAN, S. I., EPIFANOV, D. A., EPSHTEYN, L. B., EROFEEV, A. L., FEDOTOVICH, G. V., GAYAZOV, S. E., GREBENUK, A. A., GRIGORIEV, D. N., GROMOV, E. M., IGNATOV, F. V., KARPOV, S. V., and KAZANIN, V. F.

Published
2014
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28. HADRONIC CROSS SECTION MEASUREMENT AT CMD-3.

Author

AKHMETSHIN, R. R., ANISENKOV, A. V., AULCHENKO, V. M., BANZAROV, V. S., BARKOV, L. M., BASHTOVOY, N. S., BERKAEV, D. E., BRAGIN, A. V., EIDELMAN, S. I., EPIFANOV, D. A., EPSHTEYN, L. B., EROFEEV, A. L., FEDOTOVICH, G. V., GAYAZOV, S. E., GREBENUK, A. A., GRIGORIEV, D. N., GROMOV, E. M., IGNATOV, F. V., KARPOV, S. V., and KAZANIN, V. F.

Published
2014
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29. Search for the ϕ → π+π−γγ and ϕ → π+π−η decays with the CMD-2 detector.

Author

Aul'chenko, V. M., Akhmetshin, R. R., Banzarov, B. Sh., Barkov, L. M., Bashtovoi, N. S., Bondar', A. E., Bragin, A. V., Grebenyuk, A. A., Grigor'ev, D. N., Epifanov, D. A., Zaitsev, A. S., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., Koop, I. A., Krokovny, P. P., Kuz'min, A. S., Logashenko, I. B., Lukin, P. A., and Mikhailov, K. Yu.

Subjects
HADRON decay, VECTOR mesons, SYMMETRY (Physics), DETECTORS, LUMINOSITY distance, RESEARCH methodology
Abstract

The ϕ → π+π−γγ and ϕ → π+π−η decays are sought in the experimental data obtained with the CMD-2 detector in the region of the ϕ-meson resonance. Upper limits ℛ(ϕ → ππγγ)< 1.2 × 10−4 and ℛ(ϕ → ππη) < 6.1 × 10−5 (both at a C.L. of 90%) are determined for the branching ratios of these decays. [ABSTRACT FROM AUTHOR]

Published
2008
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30. Measurement of the e + e − → π+π− cross section with the CMD-2 detector in the 370–520-MeV energy range.

Author

Aul’chenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Bashtovoĭ, N. S., Bondarev, D. V., Bondar’, A. E., Bragin, A. V., Gabyshev, N. I., Gorbachev, D. A., Grebenyuk, A. A., Grigor’ev, D. N., Dhawan, S. K., Epifanov, D. A., Zaĭtsev, A. S., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., and Koop, I. A.

Subjects
PIONS, ELECTRONS, MUONS, HADRONS, LEPTONS (Nuclear physics), BREMSSTRAHLUNG, ENERGY levels (Quantum mechanics)
Abstract

The results of the experiment on the measurement of the e + e − → π+π− cross section in a cm energy range of 370–520 MeV are presented. The systematic measurement error is equal to 0.7%. In the vector dominance model, the pion electromagnetic radius is calculated using all the CMD-2 data on the pion form factor. The cross section for the production of a muon pair is measured in the energy range of the experiment. [ABSTRACT FROM AUTHOR]

Published
2006
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31. Monte-Carlo generator for e+e- annihilation into lepton and hadron pairs with precise radiative corrections.

Author

Arbuzov, A. B., Fedotovich, G. V., Ignatov, F. V., Kuraev, E. A., and Sibidanov, A. L.

Subjects
MONTE Carlo method, LEPTONS (Nuclear physics), HADRONS, COLLISIONS (Nuclear physics), ATOMIZATION
Abstract

Recently, various cross sections of e+e- annihilation into hadrons were accurately measured in the energy range from 0.37 to 1.39 GeV with the CMD-2 detector at the VEPP-2M collider. In the π+π- channel a systematic uncertainty of 0.6% has been achieved. A Monte-Carlo Generator Photon Jets (MCGPJ) was developed to simulate events of Bhabha scattering as well as production of two charged pions, kaons and muons. Based on the formalism of structure functions, the leading logarithmic contributions related to the emission of photon jets in the collinear region are incorporated into the MC generator. Radiative corrections (RC) in the first order of α are accounted for exactly. The theoretical precision of the cross sections with RC is estimated to be better than 0.2%. Numerous tests of the program as well as a comparison with other MC generators and CMD-2 experimental data are presented. [ABSTRACT FROM AUTHOR]

Published
2006
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32. Measurement of the Pion Form Factor in the Range 1.04–1.38 GeV with the CMD-2 Detector.

Author

Aul'chenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Bashtovo, N. S., Bondarev, D. V., Bondar', A. E., Bragin, A. V., Valishev, A. A., Gabyshev, N. I., Gorbachev, D. A., Grebenyuk, A. A., Grigor'ev, D. N., Dhawan, S. K., Epifanov, D. A., Zaĭtsev, A. S., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., and Karpov, S. V.

Subjects
NUCLEAR cross sections, COLLISIONS (Nuclear physics), ABSORPTION cross sections, DIFFERENTIAL cross sections, PARTICLES (Nuclear physics), ERROR analysis in mathematics, MATHEMATICAL physics
Abstract

The cross section for the process e+e–→π+π– is measured in the c.m. energy range 1.04–1.38 GeV by analyzing 995 000 selected collinear events including 860 000 e+e– events, 82 000 μ+μ– events, and 33 000 π+π– events. The systematic and statistical errors of measuring the pion form factor are equal to 1.2–4.2 and 5–13%, respectively. © 2005 Pleiades Publishing, Inc. [ABSTRACT FROM AUTHOR]

Published
2005
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33. Measurement of the Cross Section for the Process e[sup +]e[sup –] → K[sup 0][sub L]K[sup 0][sub S] in the Energy Region 2E = 1.05–1.38 GeV with the CMD-2 Detector at VEPP-2M.

Author

Anashkin, E. V., Aulchenko, V. M., Akhmetshin, R. R., Banzarov, V. Sh., Barkov, L. M., Baru, S. E., Bashtovoy, N. S., Bondarev, D. V., Bondar, A. E., Bragin, A. V., Gabyshev, N. I., Gorbachev, D. A., Grebeniuk, A. A., Grigoriev, D. N., Dhawan, S. K., Zverev, S. G., Ignatov, F. V., Kazanin, V. F., Karpov, S. V., and Koop, I.A.

Subjects
CROSS section fluctuations (Nuclear physics), NUCLEAR counters
Abstract

The cross section for the process e[sup +]e[sup –] → K[sup 0][sub L]K[sup 0][sub S] is measured by using approximately 1000 events recorded by the CMD-2 detector at the VEPP-2M collider in the energy range from 1.05 to 1.38 GeV. [ABSTRACT FROM AUTHOR]

Published
2002
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36. Status of the Liquid Xenon calorimeter of the CMD-3 detector.

Author

Anisenkov, A. V., Aulchenko, V. M., Barkov, L. M., Bashtovoy, N. S., Epshteyn, L. B., Grebenuk, A. A., Ignatov, F. V., Karpov, S. V., Khazin, B. I., Kozyrev, A. N., Logashenko, I. B., Mikhailov, K. Yu, Pestov, Yu N., Popov, A. S., Ruban, A. A., Shebalin, V. E., Titov, V. M., Talyshev, A. A., and Yudin, Yu V.

Published
2014
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