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Article ; Online: Backscattering of laser radiation on ultrarelativistic electrons in a transverse magnetic field: evidence of MeV-scale photon interference.

Abakumova, E V / Achasov, M N / Berkaev, D E / Kaminsky, V V / Muchnoi, N Yu / Perevedentsev, E A / Pyata, E E / Shatunov, Yu M

Physical review letters

2013 Volume 110, Issue 14, Page(s) 140402

Abstract: In this Letter we report an observation of interference effects in Compton scattering in the experiment held on the VEPP-2000 collider. Infrared laser radiation was scattered head-on the 990 MeV electrons inside the dipole magnet, where an electron orbit ...

Abstract	In this Letter we report an observation of interference effects in Compton scattering in the experiment held on the VEPP-2000 collider. Infrared laser radiation was scattered head-on the 990 MeV electrons inside the dipole magnet, where an electron orbit radius is about 140 cm. It was observed that the energy spectrum of backscattered photons, measured by a HPGe detector, differs from that defined by the Klein-Nishina cross section and scattering kinematics of free electrons. The explanation of the effect, proposed in terms of classical electrodynamics, is in agreement with QED calculations.
Language	English
Publishing date	2013-04-05
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.110.140402
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Book ; Online: Study of the process $e^+e^- \to \eta\eta\gamma$ in the energy range $\sqrt{s} = \mbox{1.17--2.00}$ GeV with the SND detector

SND Collaboration / Achasov, M. N. / Barnyakov, A. Yu. / Beloborodov, K. I. / Berdyugin, A. V. / Berkaev, D. E. / Bogdanchikov, A. G. / Botov, A. A. / Dimova, T. V. / Druzhinin, V. P. / Kirpotin, A. N. / Kardapoltsev, L. V. / Kasaev, A. S. / Kharlamov, A. G. / Koop, I. A. / Korol, A. A. / Kovrizhin, D. P. / Kupich, A. S. / Martin, K. A. /

Melnikova, N. A. / Muchnoy, N. Yu. / Obrazovsky, A. E. / Pakhtusova, E. V. / Pugachev, K. V. / Rabusov, D. V. / Rogovsky, Yu. A. / Senchenko, A. I. / Serednyakov, S. I. / Shatilov, D. N. / Shatunov, Yu. M. / Shtol, D. A. / Shwartz, D. B. / Silagadze, Z. K. / Surin, I. K. / Timoshenko, M. V. / Usov, Yu. V. / Zhabin, V. N. / Zhulanov, V. V.

2021

Abstract: The process $e^+e^-\to\eta\eta\gamma$ is studied in the center-of-mass energy range 1.17-2.00 GeV using data with an integrated luminosity of 201 pb$^{-1}$collected by the SND detector at the VEPP-2000 $e^+e^-$ collider. The $e^+e^-\to\eta\eta\gamma$ ... ...

Abstract	The process $e^+e^-\to\eta\eta\gamma$ is studied in the center-of-mass energy range 1.17-2.00 GeV using data with an integrated luminosity of 201 pb$^{-1}$collected by the SND detector at the VEPP-2000 $e^+e^-$ collider. The $e^+e^-\to\eta\eta\gamma$ cross section is measured for the first time. It is shown that the dominant mechanism of this reaction is the transition through the $\phi\eta$ intermediate state. Our result on the $e^+e^-\to\eta\eta\gamma$ cross section is consistent with the $e^+e^-\to\phi\eta$ measurement in the $\phi\to K^+ K^-$ mode. The search for radiative processes contributing to the $e^+e^-\to\eta\eta\gamma$ cross section is performed, and no significant signal is observed. Comment: 6 pages, 3 figures, to be submitted to European Physical Journal C. arXiv admin note: text overlap with arXiv:2006.05465
Keywords	High Energy Physics - Experiment
Subject code	551
Publishing date	2021-10-12
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Book ; Online: Study of the process $e^+e^-{\to}K^+K^-\eta$ with the CMD-3 detector at the VEPP-2000 collider

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. / Yudin, Yu. V.

2019

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^+ ... ...

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.
Keywords	High Energy Physics - Experiment
Subject code	612
Publishing date	2019-06-19
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Recent results from SND experiment at VEPP-2000 collider

Otboev A.V. / Onuchin A.P. / Obrazovsky A.E. / Martin K.A. / Kravchenko E.A. / Kovrizhin D.P. / Koshuba S.V. / Korol A.A. / Koop I.A. / Kirpotin A.N. / Kharlamov A.G. / Kasaev A.S. / Kardapoltsev L.V. / Grevtsov K.I. / Golubev V.B. / Druzhinin V.P. / Dimova T.V. / Bukin D.A. / Botov A.A. /

EPJ Web of Conferences, Vol 37, p

2012 Volume 09020

Abstract: Preliminary results of the SND experiment at the VEPP-2000 e+e− collider are presented. Data corresponding to about 40 pb−1 of integrated luminosity were collected in the e+e− c.m. energy range from 1.05 to 2.00 GeV. The cross sections for e+e− → ωπ0, π+ ... ...

Abstract	Preliminary results of the SND experiment at the VEPP-2000 e+e− collider are presented. Data corresponding to about 40 pb−1 of integrated luminosity were collected in the e+e− c.m. energy range from 1.05 to 2.00 GeV. The cross sections for e+e− → ωπ0, π+π−4π0, pp¯${m{par p}}$, nn¯${m{nar n}}$ have been measured.
Keywords	Physics ; QC1-999 ; Science ; Q ; DOAJ:Physics (General) ; DOAJ:Physics and Astronomy
Language	English
Publishing date	2012-12-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Measurement of e+e− → π+π− cross section at CMD-3

Logashenko I.B. / 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. / 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. / Kirpotin A.N. / Koop I.A. / Kovalenko O.A. / Kozyrev A.N. / Kozyrev E.A. / Krokovny P.P. / Kuzmenko A.E. / Kuzmin A.S. / 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. / Zharinov Yu.M.

EPJ Web of Conferences, Vol 72, p

2014 Volume 00013

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 ... ...

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.
Keywords	Physics ; QC1-999 ; Science ; Q
Language	English
Publishing date	2014-05-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Study of the process e+e− → 2(π+π−π0) with the CMD-3 detector at VEPP-2000 collider

Lukin P.A. / Akmetshin R.R. / 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. / 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. / Mikhailov K.Yu. / Muchnoi N.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.

EPJ Web of Conferences, Vol 81, p

2014 Volume 02010

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 ... ...

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−π0) 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.
Keywords	Physics ; QC1-999 ; Science ; Q
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Study of the processes e+e− → K+K−π+π−, ϕη with the CMD-3 detector at the e+e− collider VEPP-2000

Shemyakin D.N. / Akmetshin R.R. / 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. / 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. / Muchnoi N.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. / 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.

EPJ Web of Conferences, Vol 81, p

2014 Volume 02019

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 ... ...

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.
Keywords	Physics ; QC1-999 ; Science ; Q
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Light Hadron Production in Experiments with the SND Detector at the e+e- Collider VEPP-2000

Achasov M.N. / Barnyakov A.Yu. / Barnyakov M.Yu. / Beloborodov K.I. / Berdyugin A.V. / Berkaev D.E. / Blinov V.E. / Bobrovnikov V.S. / Bogdanchikov A.G. / Botov A.A. / Buzykaev A.R. / Dimova T.V. / Druzhinin V.P. / Golubev V.B. / Kardapoltsev L.V. / Kharlamov A.G. / Kirpotin A.N. / Kononov S.A. / Koop I.A. /

EPJ Web of Conferences, Vol 81, p

2014 Volume 02018

Abstract: The experiments have been carried out with the SND detector at the VEPP-2000 e+e− collider in the energy range from 0.3 to 2.0 GeV. The cross sections for the processes e+e− → ωπ0, K+K−, 3π, ηπ+π−, ηγ, pp̄, nn̄ have been measured. ...

Abstract	The experiments have been carried out with the SND detector at the VEPP-2000 e+e− collider in the energy range from 0.3 to 2.0 GeV. The cross sections for the processes e+e− → ωπ0, K+K−, 3π, ηπ+π−, ηγ, pp̄, nn̄ have been measured.
Keywords	Physics ; QC1-999 ; Science ; Q
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Light Hadron Production in Experiments with the SND Detector at the e+e- Collider VEPP-2000

EPJ Web of Conferences, Vol 81, p

2014 Volume 02018

Abstract	The experiments have been carried out with the SND detector at the VEPP-2000 e+e− collider in the energy range from 0.3 to 2.0 GeV. The cross sections for the processes e+e− → ωπ0, K+K−, 3π, ηπ+π−, ηγ, pp̄, nn̄ have been measured.
Keywords	Physics ; QC1-999 ; Science ; Q
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Study of the processes e+e− → K+K−π+π−, ϕη with the CMD-3 detector at the e+e− collider VEPP-2000

EPJ Web of Conferences, Vol 81, p

2014 Volume 02019

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.
Keywords	Physics ; QC1-999 ; Science ; Q
Language	English
Publishing date	2014-01-01T00:00:00Z
Publisher	EDP Sciences
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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