249 results on '"Krokovny, P.P."'
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2. Study of the process e+e−→KS0K±π∓π+π− in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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Akhmetshin, R.R., primary, Amirkhanov, A.N., additional, Anisenkov, A.V., additional, Aulchenko, V.M., additional, Bashtovoy, N.S., additional, Berkaev, D.E., additional, Bondar, A.E., additional, Bragin, A.V., additional, Eidelman, S.I., additional, Epifanov, D.A., additional, Epshteyn, L.B., additional, Erofeev, A.L., additional, Fedotovich, G.V., additional, Gorkovenko, A.O., additional, Grancagnolo, F.J., additional, Grebenuk, A.A., additional, Gribanov, S.S., additional, Grigoriev, D.N., additional, Ignatov, F.V., additional, Ivanov, V.L., additional, Karpov, S.V., additional, Kazanin, V.F., additional, Kirpotin, A.N., additional, Koop, I.A., additional, Korobov, A.A., additional, Kozyrev, A.N., additional, Kozyrev, E.A., additional, Krokovny, P.P., additional, Kuzmin, A.S., additional, Logashenko, I.B., additional, Lukin, P.A., additional, Mikhailov, K.Yu., additional, Obraztsov, I.V., additional, Okhapkin, V.S., additional, Otboev, A.V., additional, Pestov, Yu.N., additional, Popov, A.S., additional, Razuvaev, G.P., additional, Rogovsky, Yu.A., additional, Ruban, A.A., additional, Ryskulov, N.M., additional, Ryzhenenkov, A.E., additional, Semenov, A.V., additional, Senchenko, A.I., additional, Shatunov, P.Yu., additional, Shatunov, Yu.M., additional, Shebalin, V.E., additional, Shemyakin, D.N., additional, Shwartz, B.A., additional, Shwartz, D.B., additional, Sibidanov, A.L., additional, Solodov, E.P., additional, Titov, V.M., additional, Talyshev, A.A., additional, Tolmachev, S.S., additional, Vorobiov, A.I., additional, Zemlyansky, I.M., additional, Zhadan, D.S., additional, Zubakin, A.S., additional, and Yudin, Yu.V., additional
- Published
- 2023
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3. Recent results on e+e− → hadrons cross sections from SND and CMD-3 detectors at VEPP-2000 collider
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Dimova, T.V., Achasov, M.N., Akmetshin, R.R., Anisenkov, A.V., Aulchenko, V.M., Banzarov, V.Sh., Barnyakov, A.Yu., Bashtovoy, N.S., Beloborodov, K.I., Berdyugin, A.V., Berkaev, D.E., Bogdanchikov, A.G., Bondar, A.E., Botov, A.A., Bragin, A.V., Druzhinin, V.P., Eidelman, S.I., Epifanov, D.A., Epshteyn, L.B., Erofeev, A.L., Fedotovich, G.V., Gayazov, S.E., Golubev, V.B., Grebenuk, A.A., Grigoriev, D.N., Gromov, E.M., Ignatov, F.V., Kardapoltsev, L.V., Karpov, S.V., Kasaev, A.S., Kazanin, V.F., Kharlamov, A.G., Khazin, B.I., Kirpotin, A.N., Korol, A.A., Koshuba, S.V., Kovalenko, O.A., Kovrizhin, D.P., Kozyrev, A.N., Kozyrev, E.A., Krokovny, P.P., Kupich, A.S., Kuzmenko, A.E., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Martin, K.A., Mikhailov, K.Yu., Obrazovsky, A.E., Okhapkin, V.S., Otboev, A.V., Pakhtusova, E.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Senchenko, A.I., Serednyakov, S.I., Shatunov, P.Ju., Shatunov, Ju.M., Shebalin, V.E., Shemyakin, D.N., Shtol, D.A., Shwartz, D.B., Shwartz, B.A., Sibidanov, A.L., Silagadze, Z.K., Skrinsky, A.N., Solodov, E.P., Surin, I.K., Talyshev, A.A., Tikhonov, Ju.A., Titov, V.M., Usov, Yu.V., Vasiljev, A.V., Vorobiov, A.I., Yudin, Yu.V., and Zemlyansky, I.M.
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- 2016
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4. Study of the process in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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Akhmetshin, R.R., Amirkhanov, A.N., Anisenkov, A.V., Aulchenko, V.M., 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., Gorkovenko, A.O., Grancagnolo, F.J., 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., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Mikhailov, K.Yu., Obraztsov, I.V., Okhapkin, V.S., Otboev, A.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Semenov, A.V., Senchenko, A.I., Shatunov, P.Yu., 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., Tolmachev, S.S., Vorobiov, A.I., Zemlyansky, I.M., Zhadan, D.S., Zubakin, A.S., and Yudin, Yu.V.
- Abstract
A cross section of the process e+e−→KS0K±π∓π+π− has been measured for the first time using a data sample of 185.4 pb$^{−1}$ collected with the CMD-3 detector at the VEPP-2000 e+e− collider. With the KS0→π+π− decay detection, 373±20 and 514±28 signal events have been selected with six and five reconstructed tracks, respectively, in the center-of-mass energy range 1.6–2.0 GeV. The total systematic uncertainty of the cross section is about 15%. A study of the production dynamics allows us to extract a contribution from the e+e−→f1(1285)π+π− intermediate state and to measure the corresponding cross section. The intermediate states with the f1(1420) and f1(1510) resonances have been observed.
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- 2023
5. Study of the process [formula omitted] in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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Akhmetshin, R.R., Amirkhanov, A.N., Anisenkov, A.V., Aulchenko, V.M., 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., Gorkovenko, A.O., Grancagnolo, F.J., 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., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Mikhailov, K.Yu., Obraztsov, I.V., Okhapkin, V.S., Otboev, A.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Semenov, A.V., Senchenko, A.I., Shatunov, P.Yu., 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., Tolmachev, S.S., Vorobiov, A.I., Zemlyansky, I.M., Zhadan, D.S., Zubakin, A.S., and Yudin, Yu.V.
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- 2023
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6. Current status of luminosity measurement with the CMD-3 detector at the VEPP-2000 collider
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Ryzhenenkov A.E., 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., 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., Perevedentsev E.A., Pestov Yu.N., Popov A.S., Razuvaev G.P., Ruban A.A., Ryskulov N.M., Shatunov Yu.M., Shatunov P.Yu., Shebalin V.E., Shemyakin D.N., Shwartz B.A., Shwartz D.B., Sibidanov A.L., Solodov E.P., Talyshev A.A., Tolmachev S.S., Vorobiov A.I., and Yudin Yu.V.
- Subjects
Physics ,QC1-999 - 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%.
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- 2019
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7. Preliminary results on CMD-3 measurement of e+e−→ π+π− cross section
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Ignatov Fedor, Logashenko I.B., 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., Ivanov V.L., Karpov S.V., Kasaev A.S., Kazanin V.F., Korobov A.A., Koop I.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., 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., Talyshev A.A., Vorobiov A.I., and Yudin Yu.V.
- Subjects
Physics ,QC1-999 - 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.
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- 2019
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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
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Fedotovich G.V., 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., 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., Korobov A.A., Koop I.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., Talyshev A.A., Vorobiov A.I., Yudin Yu.V., and Zemlyansky I.M.
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Physics ,QC1-999 - 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.
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- 2019
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9. CMD-3 Overview
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Logashenko Ivan B., Ignatov F.V., 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., Ivanov V.L., Karpov S.V., Kazanin V.F., Kirpotin A.N., Korobov A.A., Koop I.A., Kozyrev A.N., Kozyrev E.A., Krokovny P.P., Kuzmenko A.E., Kuzmin A.S., Lukin P.A., Mikhailov K.Yu., Okhapkin V.S., Otboev A.V., Pestov Yu.N., Popov A.S., Razuvaev G.P., Ruban A.A., Ryskulov N.M., Ryzhenenkov A.E., Senchenko 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., Vorobiov A.I., Yudin Yu.V., and Zemlyansky I.M.
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Physics ,QC1-999 - 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 s≤2$ \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.
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- 2019
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10. Study of e+e− annihilation to hadrons at the VEPP-2000 collider
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Beloborodov K.I., Achasov M.N., Akhmetshin R.R., Amirkhanov A.N., Anisenkov A.V., Aulchenko V.M., Banzarov V.Sh., Barnyakov A.Yu., Bashtovoy N.S., Berdyugin A.V., Bogdanchikov A.G., Bondar A.E., Botov A.A., Bragin A.V., Dimova T.V., Druzhinin V.P., Eidelman S.I., Epifanov D.A., Epshteyn L.B., Erofeev A.L., Fedotovich G.V., Gayazov S.E., Golubev V.G., Grebenuk A.A., Gribanov S.S., Grigoriev D.N., Ignatov F.V., Ivanov V.L., Kardapoltsev L.V., Karpov S.V., Kazanin V.F., Kharlamov A.G., Korneev L.A., Korobov A.A., Korol A.A., Koshuba S.V., Kovrizhin D.P., Kozyrev A.N., Kozyrev E.A., Krokovny P.P., Kupich A.S., Kuzmenko A.E., Kuzmin A.S., Litvinov R.A., Logashenko I.B., Lukin P.A., Martin K.A., Melnikova N.A., Mikhailov K.Yu., Obrazovsky A.E., Okhapkin V.S., Pakhtusova E.V., Pestov Yu.N., Popov A.S., Pugachev K.V., Razuvaev G.P., Ruban A.A., Ryskulov N.M., Ryzhenenkov A.E., Serednyakov S.I., Shebalin V.E., Shemyakin D.N., Shtol D.A., Shwartz B.A., Sibidanov A.L., Silagadze Z.K., Solodov E.P., Surin I.K., Talyshev A.A., Titov V.M., Usov Yu.V., Vasiljev A.V., Vorobiov A.I., Yudin Yu.V., Zhabin V.N., and Zhulanov V. V.
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Physics ,QC1-999 - 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−→π+π−,nn¯,π+π−η,π+π−π0η,KSKLπ0$e^+e^-\rightarrow\pi^+\pi^-,n\overline n,\pi^+\pi^-\eta,\pi^+\pi^-\pi^0\eta,K_SK_L\pi^0$, etc.
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- 2019
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11. Measurement of the hadronic cross sections with the CMD-3 and SND detectors at the VEPP-2000 collider
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Korol A.A., Achasov M.N., Akhmetshin R.R., Amirkhanov A.N., Anisenkov A.V., Aulchenko V.M., Banzarov V.S., Barnyakov A. Yu., Bashtovoy N.S., Beloborodov K.I., Berdyugin A.V., Berkaev D.E., Bogdanchikov A.G., Bondar A.E., Botov A.A., Bragin A.V., Dimova T.V., Druzhinin V.P., Eidelman S.I., Epifanov D.A., Epshteyn L.B., Erofeev A.L., Fedotovich G.V., Gayazov S.E., Golubev V.B., Grebenuk A.A., Gribanov S.S., Grigoriev D.N., Ignatov F.V., Ivanov V.L., Kardapoltsev L.V., Karpov S.V., Kasaev A.S., Kazanin V.F., Kharlamov A.G., Kirpotin A.N., Koop I.A., Korobov A.A., Koshuba S.V., Kovrizhin D.P., Kozyrev A.N., Kozyrev E.A., Krokovny P.P., Kupich A.S., Kuzmenko A.E., Kuzmin A.S., Logashenko I.B., Lukin P.A., Lysenko A.P., Martin K.A., Melnikova N.A., Mikhailov K. Yu., Muchnoi N. Yu., Obrazovsky A.E., Okhapkin V.S., Pakhtusova E.V., Perevedentsev E.A., Pestov Yu. N., Popov A.S., Razuvaev G.P., Rogovsky Yu. A., Ruban A.A., Ryskulov N.M., Ryzhenenkov A.E., Senchenko A.I., Serednyakov S.I., Shatunov P. Yu., Shatunov Yu. M., Shebalin V.E., Shemyakin D.N., Shtol D.A., Shwartz B.A., Shwartz D.B., Sibidanov A.L., Silagadze Z.K., Skrinsky A.N., Solodov E.P., Surin I.K., Talyshev A.A., Tikhonov Yu. A., Usov Yu. V., Vasiljev A.V., Vorobiov A.I., Yudin Yu. V., and Zemlyansky I M.
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Physics ,QC1-999 - 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.
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- 2018
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12. Study of the process in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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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., Grancagnolo, F.J., 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., 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., Vorobiov, A.I., Zemlyansky, I.M., and Yudin, Yu.V.
- Abstract
The cross section of the process e+e−→KS0KS0π+π− has been measured using a data sample of 56.7 pb$^{−1}$ collected with the CMD-3 detector at the VEPP-2000 e+e− collider. 596±27 and 210±18 signal events have been selected with six and five detected tracks, respectively, in the center-of-mass energy range 1.6–2.0 GeV. The total systematic uncertainty of the cross section is about 10%. The study of the production dynamics confirms the dominance of the K⁎(892)+K⁎(892)− intermediate state.
- Published
- 2020
13. Study of the process [formula omitted] in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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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., Grancagnolo, F.J., 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., 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., Vorobiov, A.I., Zemlyansky, I.M., and Yudin, Yu.V.
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- 2020
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14. Study of the process e+e− → K+K−η with the CMD-3 detector at the VEPP-2000 collider
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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.
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- 2019
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15. Measurement of the hadronic cross sections at Novosibirsk
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Logashenko I.B., Achasov M.N., Akhmetshin R.R., Amirkhanov A.N., Anisenkov A.V., Aulchenko V.M., Banzarov V.S., Bashtovoy N.S., Barnyakov A.Yu., Beloborodov K.I., Berdyugin A.V., Berkaev D.E., Bogdanchikov A.G., Botov A.A., Bragin A.V., Dimova T.V., Druzhinin V.P., Eidelman S.I., Epifanov D.A., Epshteyn L.B., Erofeev A.L., Fedotovich G.V., Gayazov S.E., Golubev V.B., Grebenuk A.A., Grigoriev D.N., Gromov E.M., Ignatov F.V., Kardapoltsev L.V., Karpov S.V., Kazanin V.F., Kharlamov A.G., Koop I.A., Korol A.A., Koshuba S.V., Kovalenko O.A., Kovrizhin D.P., Kozyrev A.N., Kozyrev E.A., Krokovny P.P., Kupich A.S., Kuzmenko A.E., Kuzmin A.S., Lukin P.A., Martin K.A., Mikhailov K.Yu., Obrazovsky A.E., Okhapkin V.S., Otboev A.V., Pakhtusova E.V., Pestov Yu.N., Popov A.S., Razuvaev G.P., Rogovsky Yu.A., Romanov A.L., Ruban A.A., Ryskulov N.M., Ryzhenenkov A.E., Serednyakov S.I., Shebalin V.E., Shemyakin D.N., Shtol D.A., Shwartz B.A., Shwartz D.B., Sibidanov A.L., Silagadze Z.K., Shatunov P.Yu., Shatunov Yu.M., Solodov E.P., Surin I.K., Titov V.M., Talyshev A.A., Vasiljev A.V., Vorobiov A.I., and Yudin Yu.V.
- Subjects
Physics ,QC1-999 - Abstract
Two experiments, CMD-3 and SND, collected over 100 pb−1 in total taking data in 2011-2013 at the VEPP-2000 electron-positron collider. The data sample covers the whole available c.m. energy range from 0.32 GeV to 2.0 GeV. An upgrade of VEPP-2000 started in the second half of 2013, aimed at the luminosity increase up to 10 times at 2.0 GeV. Data taking is expected to resumed in 2015. The current results of analysis of the collected data for various modes of e+ e− → hadrons are discussed.
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- 2015
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16. Observation of a fine structure in e+e− → hadrons production at the nucleon-antinucleon threshold
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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., Otboev, A.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Senchenko, A.I., Shatunov, Yu.M., Shatunov, P.Yu., Shebalin, V.E., Shemyakin, D.N., Shwartz, B.A., Shwartz, D.B., Sibidanov, A.L., Solodov, E.P., Talyshev, A.A., Titov, V.M., Tolmachev, S.S., Vorobiov, A.I., Zemlyansky, I.M., and Yudin, Yu.V.
- Published
- 2019
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17. Study of the process e+e− → 3(π+π−)π0 in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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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., Otboev, A.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Senchenko, A.I., 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.
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- 2019
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18. Production of four charged pions with the CMD-3 detector at the VEPP-2000 collider
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Korobov, A. A., primary, Akhmetshin, R. R., additional, Amirkhanov, A. N., additional, Anisenkov, A. V., additional, Aulchenko, V. M., additional, Banzarov, V. Sh., additional, Bashtovoy, N. S., additional, Berkaev, D. E., additional, Bondar, A. E., additional, Bragin, A. V., additional, Eidelman, S. I., additional, Epifanov, D. A., additional, Epshteyn, L. B., additional, Erofeev, A. L., additional, Fedotovich, G. V., additional, Gayazov, S. E., additional, Grebenuk, A. A., additional, Gribanov, S. S., additional, Grigoriev, D. N., additional, Ignatov, F. V., additional, Ivanov, V. L., additional, Karpov, S. V., additional, Kasaev, A. S., additional, Kazanin, V. F., additional, Koop, I. A., additional, Kozyrev, A. N., additional, Kozyrev, E. A., additional, Krokovny, P.P., additional, Kuzmenko, A. E., additional, Kuzmin, A. S., additional, Logashenko, I. B., additional, Lysenko, A.P., additional, Lukin, P. A., additional, Mikhailov, K.Yu., additional, Okhapkin, V. S., additional, Otboev, A. V., additional, Perevedentsev, E. A., additional, Pestov, Yu. N., additional, Popov, A. S., additional, Razuvaev, G.P., additional, Ruban, A. A., additional, Ryskulov, N. M., additional, Ryzhenenkov, A. E., additional, Semenov, A. V., additional, Senchenko, A. I., additional, Shatunov, Yu. M., additional, Shebalin, V. E., additional, Shemyakin, D. N., additional, Shwartz, B. A., additional, Shwartz, D. B., additional, Sibidanov, A. L., additional, Solodov, E.P., additional, Titov, V. M., additional, Talyshev, A. A., additional, Vorobiov, A. I., additional, and Yudin, Yu. V., additional
- Published
- 2020
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19. Study of the process e+e−→KS0KS0π+π− in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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Akhmetshin, R.R., primary, Amirkhanov, A.N., additional, Anisenkov, A.V., additional, Aulchenko, V.M., additional, Banzarov, V.Sh., additional, Bashtovoy, N.S., additional, Berkaev, D.E., additional, Bondar, A.E., additional, Bragin, A.V., additional, Eidelman, S.I., additional, Epifanov, D.A., additional, Epshteyn, L.B., additional, Erofeev, A.L., additional, Fedotovich, G.V., additional, Gayazov, S.E., additional, Grancagnolo, F.J., additional, Grebenuk, A.A., additional, Gribanov, S.S., additional, Grigoriev, D.N., additional, Ignatov, F.V., additional, Ivanov, V.L., additional, Karpov, S.V., additional, Kasaev, A.S., additional, Kazanin, V.F., additional, Koop, I.A., additional, Korobov, A.A., additional, Kozyrev, A.N., additional, Kozyrev, E.A., additional, Krokovny, P.P., additional, Kuzmenko, A.E., additional, Kuzmin, A.S., additional, Logashenko, I.B., additional, Lukin, P.A., additional, Lysenko, A.P., additional, Mikhailov, K.Yu., additional, Okhapkin, V.S., additional, Perevedentsev, E.A., additional, Pestov, Yu.N., additional, Popov, A.S., additional, Razuvaev, G.P., additional, Ruban, A.A., additional, Ryskulov, N.M., additional, Ryzhenenkov, A.E., additional, Semenov, A.V., additional, Shatunov, Yu.M., additional, Shebalin, V.E., additional, Shemyakin, D.N., additional, Shwartz, B.A., additional, Shwartz, D.B., additional, Sibidanov, A.L., additional, Solodov, E.P., additional, Timoshenko, M.V., additional, Titov, V.M., additional, Talyshev, A.A., additional, Vorobiov, A.I., additional, Zemlyansky, I.M., additional, and Yudin, Yu.V., additional
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- 2020
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20. Recent results from the CMD-3 detector
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Lukin, P.A., primary, Akhmetshin, R.R., additional, Amirkhanov, A.N., additional, Anisenkov, A.V., additional, Aulchenko, V.M., additional, Banzarov, V.Sh., additional, Bashtovoy, N.S., additional, Berkaev, D.E., additional, Bondar, A.E., additional, Bragin, A.V., additional, Eidelman, S.I., additional, Epifanov, D.A., additional, Epshtein, L.B., additional, Erofeev, A.L., additional, Fedotovich, G.V., additional, Gayazov, S.E., additional, Grebenuk, A.A., additional, Gribanov, S.S., additional, Grigoriev, D.N., additional, Ignatov, F.V., additional, Ivanov, V.L., additional, Karpov, S.V., additional, Kazanin, V.F., additional, Koop, I.A., additional, Kirpotin, A.N., additional, Korobov, A.A., additional, Kozyrev, A.N., additional, Kozyrev, E.A., additional, Krokovny, P.P., additional, Kuzmenko, A.E., additional, Kuzmin, A.S., additional, Logashenko, I.B., additional, Mikhailov, K.Yu., additional, Okhapkin, V.S., additional, Otboev, A.V., additional, Pestov, Yu.N., additional, Popov, A.S., additional, Razuvaev, G.P., additional, Rogovsky, Yu.A., additional, Ruban, A.A., additional, Ryskulov, N.M., additional, Ryzhenenkov, A.E., additional, Semenov, A.V., additional, Senchenko, A.I., additional, Shatunov, P.Yu., additional, Shatunov, Yu.M., additional, Shebalin, V.E., additional, Shemyakin, D.N., additional, Shwartz, B.A., additional, Shwartz, D.B., additional, Sibidanov, A.L., additional, Solodov, E.P., additional, Talyshev, A.A., additional, Titov, V.M., additional, Vorobiov, A.I., additional, Yudin, Yu.V., additional, and Zemlyansky, I.M., additional
- Published
- 2020
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21. Study of the process → with the CMD-3 detector at the VEPP-2000 collider
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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.
- Abstract
The process e+e−→K+K−η 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−η final state is found to be dominated by the contribution of the ϕ(1020)η intermediate state. The cross section of the process e+e−→ϕ(1020)η has been measured with a systematic uncertainty of 5.1% on the base of 3009 ± 67 selected events. The obtained cross section has been used to calculate the contribution to the anomalous magnetic moment of the muon: aμϕη(E<1.8GeV)=(0.321±0.015stat±0.016syst)×10−10, aμϕη(E<2.0GeV)=(0.440±0.015stat±0.022syst)×10−10. From the cross section approximation the ϕ(1680) meson parameters have been determined with better statistical precision, than in previous studies.
- Published
- 2019
22. Dispersive analysis of the κ/K0*(700) meson and other light strange resonances
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Peláez, José R., Rodas, Arkaitz, Ruiz de Elvira Carrascal, Jacobo, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
Physics ,Meson ,010308 nuclear & particles physics ,530 Physics ,Analytic continuation ,QC1-999 ,Resonance ,01 natural sciences ,Theoretical physics ,Simple (abstract algebra) ,Dispersion relation ,0103 physical sciences ,Hyperbolic dispersion ,010306 general physics - Abstract
We briefly review our recent works where we use dispersion relations to constrain fits to data on πK → πK and $ \pi \pi \to K\bar K $ providing a simple but consistent description of these processes. Then, simple analytic methods allow to extract parameters of poles associated to light strange resonances without assuming a particular model. We also present preliminary results on a model-independent determination of the controversial κ or $ K_0^*\left( {700} \right) $ resonance parameters, by using those constrained parameterizations as input for partial-wave hyperbolic dispersion relations that allow to perform a rigorous analytic continuation to determine its associated pole.
- Published
- 2019
23. Study of the process → 3( ) in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector
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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., Otboev, A.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Senchenko, A.I., 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.
- Abstract
The cross section of the process e+e−→3(π+π−)π0 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.
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- 2019
24. Measurement of e+e− → π+π− cross section at CMD-3
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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., and Zharinov Yu.M.
- Subjects
Physics ,QC1-999 - 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.
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- 2014
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25. Precise measurements of the hadronic cross sections with the CMD-3 and SND detectors at the VEPP-2000 e+ e− collider
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Achasov M.N., Akhmetshin R.R., Anisenkov A.V., Aulchenko V.M., Banzarov V.S., Barkov L.M., Barnyakov A.Yu., Bashtovoy N.S., Beloborodov K.I., Berdyugin A.V., Berkaev D.E., Bogdanchikov A.G., Bondar A.E., Botov A.A., Bragin A.V., Dimova A.V., Druzhinin V.P., Eidelman S.I., Epifanov D.A., Epshteyn L.B., Erofeev A.L., Fedotovich G.V., Gayazov S.E., Golubev V.B., Grebenuk A.A., Grevtsov K.A., Grigoriev D.N., Gromov E.M., Ignatov F.V., Kardapoltsev L.V., Karpov S.V., Kazanin V.F., Kharlamov A.G., Khazin B.I., Kirpotin A.N., Koop I.A., Korol A.A., Koshuba S.V., Kovalenko O.A., Kovrizhin D.P., Kozyrev A.N., Kozyrev E.A., Krokovny P.P., Kupich A.S., Kuzmenko A.E., Kuzmin A.S., Logashenko I.B., Lukin P.A., Lysenko A.P., Martin K.A., Mikhailov K.Yu., Obrazovsky A.E., Okhapkin V.S., Otboev A.V., Pakhtusova E.V., Perevedentsev E.A., Pestov Yu.N., Popov A.S., Popov Yu.S., Razuvaev G.P., Rogovsky Yu.A., Romanov A.L., Ruban A.A., Ryskulov N.M., Ryzhenenkov A.E., Serednyakov S.I., Shatunov P.Yu., Shatunov Yu.M., Shebalin V.E., Shemyakin D.N., Shtol D.A., Shwartz B.A., Shwartz D.B., Sibidanov A.L., Silagadze Z.K., Solodov E.P., Surin I.K., Talyshev A.A., Titov V.M., Vasiljev A.V., Vorobiov A.I., Yudin Yu.V., Zemlyansky I.M., and Zharinov Yu.M.
- Subjects
Physics ,QC1-999 - 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.
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- 2014
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26. Study of the process e+e− → 2(π+π−π0) with the CMD-3 detector at VEPP-2000 collider
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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., and Yudin Yu.V.
- Subjects
Physics ,QC1-999 - 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.
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- 2014
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27. Study of the processes e+e− → K+K−π+π−, ϕη with the CMD-3 detector at the e+e− collider VEPP-2000
- Author
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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., and Yudin Yu.V.
- Subjects
Physics ,QC1-999 - 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
- Full Text
- View/download PDF
28. Recent results of the study of hadronic production with the CMD-2 and SND detectors at the VEPP-2M collider
- Author
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Achasov, M.N., Akhmetshin, R.R., Aulchenko, V.M., Banzarov, V.Sh., Baratt, A., Barkov, L.M., Baru, S.E., Bashtovoy, N.S., Beloborodov, K.I., Berdugin, A.V., Bogdanchikov, A.G., Bondar, A.E., Bondarev, D.V., Bozhenok, A.V., Bragin, A.V., Bukin, A.D., Bukin, D.A., Dimova, T.V., Druzhinin, V.P., Eidelman, S.I., Epifanov, D.A., Fedotovitch, G.V., Gabyshev, N.I., Gorbachev, D.A., Grebeniuk, A.A., Grigoriev, D.N., Hughes, V.W., Ignatov, F.V., Karpov, S.V., Kazanin, V.F., Khazin, B.I., Koop, I.A., Korol, A.A., Koshuba, S.V., Krokovny, P.P., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Lysenko, A.P., Mikhailov, K.Y., Milstein, A.I., Nesterenko, I.N., Okhapkin, V.S., Otboev, A.V., Pakhtusova, E.V., Perevedentsev, E.A., Polunin, A.A., Popov, A.S., Redin, S.I., Root, N.I., Ruban, A.A., Ryskulov, N.M., Serednyakov, S.I., Shamov, A.G., Shatunov, Y.M., Shwartz, B.A., Sibidanov, A.L., Sidorov, V.A., Silagadze, Z.K., Skrinsky, A.N., Snopkov, I.G., Solodov, E.P., Thompson, J.A., Usov, Y.V., Valishev, A.A., Vasiljev, A.V., Yudin, Y.V., Zaitsev, A.S., and Zverev, S.G.
- Published
- 2004
- Full Text
- View/download PDF
29. Precise measurements of the hadronic cross sections at the VEPP-2M collider with the CMD-2 detector
- Author
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Akhmetshin, R.R., Aulchenko, V.M., Banzarov, V.Sh., Barkov, L.M., Baru, S.E., Bashtovoy, N.S., Bondar, A.E., Bondarev, D.V., Bragin, A.V., Eidelman, S.I., Fedotovich, G.V., Gabyshev, N.I., Gorbachev, D.A., Grebeniuk, A.A., Grigoriev, D.N., Hughes, V.W., Ignatov, F.V., Karpov, S.V., Kazanin, V.F., Khazin, B.I., Koop, I.A., Krokovny, P.P., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Lysenko, A.P., Mikhailov, K.Yu., Miller, J.P., Okhapkin, V.S., Polunin, A.A., Popov, A.S., Redin, S.I., Roberts, B.L., Root, N.I., Ruban, A.A., Ryskulov, N.M., Shatunov, Yu.M., Shwartz, B.A., Sibidanov, A.L., Sidorov, V.A., Skrinsky, A.N., Snopkov, I.G., Solodov, E.P., Thompson, J.A., Titov, V.M., Valishev, A.A., Yudin, Yu.V., and Zverev, S.G.
- Published
- 2004
- Full Text
- View/download PDF
30. Study of the process e+e− → K+K− in the center-of-mass energy range 1010–1060 MeV with the CMD-3 detector
- Author
-
Kozyrev, E.A., Solodov, E.P., 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., Kasaev, A.S., Kazanin, V.F., Korobov, A.A., Koop, I.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., 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., Talyshev, A.A., Vorobiov, A.I., and Yudin, Yu.V.
- Published
- 2018
- Full Text
- View/download PDF
31. Study of the process e+e−→KS0KL0 in the center-of-mass energy range 1004–1060 MeV with the CMD-3 detector at the VEPP-2000 e+e− collider
- Author
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Kozyrev, E.A., Solodov, E.P., 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., Kasaev, A.S., Kazanin, V.F., Kirpotin, A.N., Korobov, A.A., Kovalenko, O.A., Kozyrev, A.N., Koop, I.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., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Senchenko, A.I., Shebalin, V.E., Shemyakin, D.N., Shwartz, B.A., Shwartz, D.B., Sibidanov, A.L., Shatunov, P.Yu., Shatunov, Yu.M., Titov, V.M., Talyshev, A.A., Vorobiov, A.I., and Yudin, Yu.V.
- Subjects
Nuclear and High Energy Physics - Published
- 2016
- Full Text
- View/download PDF
32. Study of the process e+e−→pp¯ in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector
- Author
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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., Gromov, E.M., Ignatov, F.V., Ivanov, V.L., Karpov, S.V., Kasaev, A.S., 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., Mikhailov, K.Yu., Okhapkin, V.S., Otboev, A.V., Pestov, Yu.N., Pivovarov, S.G., Popov, A.S., Razuvaev, G.P., 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
Nuclear and High Energy Physics - Published
- 2016
- Full Text
- View/download PDF
33. Study of the process e+e− → π+π−π0η in the c.m. energy range 1394–2005 MeV with the CMD-3 detector
- Author
-
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., Otboev, A.V., Pestov, Yu.N., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Senchenko, A.I., 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.
- Published
- 2017
- Full Text
- View/download PDF
34. Search for the process e+e−→η′(958) with the CMD-3 detector
- Author
-
Akhmetshin, 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.N., 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., 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., and Yudin, Yu.V.
- Subjects
lcsh:Physics ,lcsh:QC1-999 - Abstract
A search for the process e+eââηâ²(958) in the Ï+ÏâηâÏ+Ïâγγ final state has been performed with the CMD-3 detector at the VEPP-2000 e+eâ collider. Using an integrated luminosity of 2.69 pbâ1 collected at the center-of-mass energy Ec.m.=957.68 MeV we set an upper limit for the product of electronic width and branching fractions Îηâ²(958)âe+eââ Bηâ²(958)âÏ+Ïâηâ Bηâγγ
- Published
- 2015
35. Study of the process e+e− → π+π−π+π− in the c.m. energy range 920–1060 MeV with the CMD-3 detector
- Author
-
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., Kovalenko, O.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., Pestov, Yu.N., Perevedentsev, E.A., 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., and Yudin, Yu.V.
- Published
- 2017
- Full Text
- View/download PDF
36. Cross section of the reaction e +e −→ π+π−π+π− below 1 GeV at CMD-2
- Author
-
Akhmetshin, R.R., Anashkin, E.V., Arpagaus, M., Aulchenko, V.M., Banzarov, V.Sh., Barkov, L.M., Bashtovoy, N.S., Bondar, A.E., Bondarev, D.V., Bragin, A.V., Chernyak, D.V., Eidelman, S.I., Fedotovitch, G.V., Gabyshev, N.I., Grebeniuk, A.A., Grigoriev, D.N., Hughes, V.W., Karpov, S.V., Kazanin, V.F., Khazin, B.I., Koop, I.A., Korostelev, M.S., Krokovny, P.P., Kurdadze, L.M., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Mikhailov, K.Yu., Milstein, A.I., Nesterenko, I.N., Okhapkin, V.S., Otboev, A.V., Polunin, A.A., Popov, A.S., Purlatz, T.A., Root, N.I., Ruban, A.A., Ryskulov, N.M., Shamov, A.G., Shatunov, Yu.M., Shwartz, B.A., 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., Titov, V.M., Valishev, A.A., Yudin, Yu.V., and Zverev, S.G.
- Published
- 2000
- Full Text
- View/download PDF
37. New measurement of the rare decay φ→ η′ γ with CMD-2
- Author
-
Akhmetshin, R.R., Anashkin, E.V., Arpagaus, M., Aulchenko, V.M., Banzarov, V.Sh., Barkov, L.M., Bashtovoy, N.S., Bondar, A.E., Bondarev, D.V., Bragin, A.V., Chernyak, D.V., Eidelman, S.I., Fedotovitch, G.V., Gabyshev, N.I., Grebeniuk, A.A., Grigoriev, D.N., Hughes, V.W., Ivanov, P.M., Karpov, S.V., Kazanin, V.F., Khazin, B.I., Koop, I.A., Korostelev, M.S., Krokovny, P.P., Kurdadze, L.M., Kuzmin, A.S., Logashenko, I.B., Lukin, P.A., Lysenko, A.P., Mikhailov, K.Yu., Nesterenko, I.N., Okhapkin, V.S., Otboev, A.V., Perevedentsev, E.A., Polunin, A.A., Popov, A.S., Purlatz, T.A., Root, N.I., Ruban, A.A., Ryskulov, N.M., Shamov, A.G., Shatunov, Yu.M., Shekhtman, A.I., Shwartz, B.A., 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., Titov, V.M., Valishev, A.A., Yudin, Yu.V., and Zverev, S.G.
- Published
- 2000
- Full Text
- View/download PDF
38. Measurement of the e+e− → K+K−π+π− cross section with the CMD-3 detector at the VEPP-2000 collider
- Author
-
Shemyakin, D.N., Fedotovich, G.V., Akhmetshin, R.R., Amirkhanov, A.N., Anisenkov, A.V., Aulchenko, V.M., Banzarov, V.Sh., Bashtovoy, N.S., 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., Koop, I.A., Korobov, A.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., Lukin, P.A., Mikhailov, K.Yu., Okhapkin, V.S., Pestov, Yu.N., Perevedentsev, E.A., Popov, A.S., Razuvaev, G.P., Rogovsky, Yu.A., Ruban, A.A., Ryskulov, N.M., Ryzhenenkov, A.E., Shebalin, V.E., 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 Zemlyansky, I.M.
- Published
- 2016
- Full Text
- View/download PDF
39. Study of the process e+e−→K+K− in the center-of-mass energy range 1010–1060 MeV with the CMD-3 detector
- Author
-
Kozyrev, E.A., primary, Solodov, E.P., additional, Akhmetshin, R.R., additional, Amirkhanov, A.N., additional, Anisenkov, A.V., additional, Aulchenko, V.M., additional, Banzarov, V.S., additional, Bashtovoy, N.S., additional, Berkaev, D.E., additional, Bondar, A.E., additional, Bragin, A.V., additional, Eidelman, S.I., additional, Epifanov, D.A., additional, Epshteyn, L.B., additional, Erofeev, A.L., additional, Fedotovich, G.V., additional, Gayazov, S.E., additional, Grebenuk, A.A., additional, Gribanov, S.S., additional, Grigoriev, D.N., additional, Ignatov, F.V., additional, Ivanov, V.L., additional, Karpov, S.V., additional, Kasaev, A.S., additional, Kazanin, V.F., additional, Korobov, A.A., additional, Koop, I.A., additional, Kozyrev, A.N., additional, Krokovny, P.P., additional, Kuzmenko, A.E., additional, Kuzmin, A.S., additional, Logashenko, I.B., additional, Lukin, P.A., additional, Lysenko, A.P., additional, Mikhailov, K.Yu., additional, Okhapkin, V.S., additional, Perevedentsev, E.A., additional, Pestov, Yu.N., additional, Popov, A.S., additional, Razuvaev, G.P., additional, Rogovsky, Yu.A., additional, Ruban, A.A., additional, Ryskulov, N.M., additional, Ryzhenenkov, A.E., additional, Shebalin, V.E., additional, Shemyakin, D.N., additional, Shwartz, B.A., additional, Shwartz, D.B., additional, Sibidanov, A.L., additional, Shatunov, Yu.M., additional, Talyshev, A.A., additional, Vorobiov, A.I., additional, and Yudin, Yu.V., additional
- Published
- 2018
- Full Text
- View/download PDF
40. Hadronic cross sections with the CMD-3 detector at the VEPP-2000
- Author
-
Akhmetshin, R.R., primary, Amirkhanov, A.N., additional, Anisenkov, A.V., additional, Aulchenko, V.M., additional, Banzarov, V.Sh., additional, Bashtovoy, N.S., additional, Berkaev, D.E., additional, Bondar, A.E., additional, Bragin, A.V., additional, Eidelman, S.I., additional, Epifanov, D.A., additional, Epshteyn, L.B., additional, Erofeev, A.L., additional, Fedotovich, G.V., additional, Gayazov, S.E., additional, Grebenuk, A.A., additional, Gribanov, S.S., additional, Grigoriev, D.N., additional, Ignatov, F.V., additional, Ivanov, V.L., additional, Karpov, S.V., additional, Kazanin, V.F., additional, Koop, I.A., additional, Kirpotin, A.N., additional, Korobov, A.A., additional, Kozyrev, A.N., additional, Kozyrev, E.A., additional, Krokovny, P.P., additional, Kuzmenko, A.E., additional, Kuzmin, A.S., additional, Logashenko, I.B., additional, Lukin, P.A., additional, Mikhailov, K.Yu., additional, Okhapkin, V.S., additional, Otboev, A.V., additional, Pestov, Yu.N., additional, Popov, A.S., additional, Razuvaev, G.P., additional, Rogovsky, Yu.A., additional, Ruban, A.A., additional, Ryskulov, N.M., additional, Ryzhenenkov, A.E., additional, Senchenko, A.I., additional, Shatunov, Yu.M., additional, Shatunov, P.Yu., additional, Shebalin, V.E., additional, Shemyakin, D.N., additional, Shwartz, B.A., additional, Shwartz, D.B., additional, Sibidanov, A.L., additional, Solodov, E.P., additional, Titov, V.M., additional, Talyshev, A.A., additional, Vorobiov, A.I., additional, Zemlyansky, I.M., additional, and Yudin, Yu.V., additional
- Published
- 2018
- Full Text
- View/download PDF
41. Open Charm Physics at BESIII.
- Author
-
Weidenkaff, Peter, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
MESON decay ,BARYON decay ,FLAVOR in particle physics ,PHYSICAL measurements ,NUCLEAR energy - Abstract
The study of mesons and baryons containing at least one c quark is denoted as open charm physics. BESIII has collected large data samples at charm related thresholds which provide unique opportunities to study charm decays. BESIII has published many results in the past years. Among those we present the measurement of the CKM matrix elements |V
cd (s)|2 and the form factors fD(s) using the (semi-)leptonic decays Ds → µ+ νµ and D0 → K− µ+ νµ , a test for lepton flavour violation in the process D → Kπe+ e+ and the study of intermediate states in the decays D → ππe+ ν and D + → K S 0 π − π − π + $ {{\rm{D}}^{\rm{ + }}} \to {\rm{K}}_{\rm{S}}^0{\pi ^ - }{\pi ^ - }{\pi ^ + } $. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
42. Open charm studies at Belle.
- Author
-
Zhukova, Valentina, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
NUCLEAR cross sections ,ELECTRON-electron interactions ,SPECIAL relativity (Physics) ,NUCLEAR counters ,ANGULAR acceleration - Abstract
We present the new results of measurements of the exlusive cross sections of the e
+ e− annihilation to charmed meson pairs as a function of √ ceneter-of-mass energy from the open charm threashold up to s = 6 GeV $ \sqrt s = {\rm{6 GeV}} $ using initial state radiation technique. The analysis is based on a data sample collected by the Belle detector with an integrated luminosity of 951 fb−1 . The accuracy of the cross section measurement is increased by a factor of 2 in comparison with the first Belle study. We have performed the first angular analysis + −→ D*± D*∓ of the e + e − → D * ± D * ∓ $ {e^{\rm{ + }}}{e^ - } \to {D^{* \pm }}{D^{* \mp }} $ process and decomposed this exclusive cross section into three components corresponding to the different D* helicities. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
43. Off-shell fermion polarization and t-quark production.
- Author
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Kaloshin, Alexander, Lomov, Vladimir, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
FERMIONS ,POLARIZATION (Nuclear physics) ,QUARKS ,STANDARD model (Nuclear physics) ,PARITY (Physics) - Abstract
Standard calculation of the polarization of final electron for pure initial state may be reformulated as a problem of looking for the complete polarization axis of produced state. It gives method for calculation of polarization applicable for both final and intermediate state fermions. We discuss modification of the energy and spin projectors in theory with parity violation. The obtained projectors are used to give the most accurate parametrization of t-quark resonance curve and simultaneously for its off-shell polarization. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
44. Tau mass measurement at BES-III.
- Author
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Achasov, M.N., Mo, X.H., Muchnoi, N.Yu., Nikolaev, I.B., Privalov, S.A., Zhang, J.Y., Ignatov, F.V., and Krokovny, P.P.
- Subjects
MASS measurement ,ELECTRON-electron interactions ,LEPTONS (Nuclear physics) ,LUMINOSITY ,COMPTON scattering - Abstract
A scan of the threshold region of the process e
+ e− → τ+ τ− with integrated luminosity about 140 pb−1 was performed with the BES-III detector at the BEPC-II collider in order to measure the τ-lepton mass. The beam energy was determined by the Compton backscattering method. To verify the measurement accuracy scans of the J/ψ and ψ′ resonances were performed. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
45. Recent results on Kaon Physics at KLOE-2.
- Author
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Di Cicco, Alessandro, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
KAON decay ,NUCLEAR physics experiments ,SYMMETRY (Physics) ,ELECTRON-positron interactions ,NUCLEAR energy - Abstract
KLOE-2 extends the physics program of the forerunner KLOE experiment, especially in the field of discrete symmetries tests with neutral kaons. KLOE and KLOE-2 have collected together the largest sample of electron-positron collisions at an energy equal to the φ-meson mass, corresponding to about 2.4×10
10 produced φ mesons. The latest results on neutral kaon physics at KLOE will be reviewed, together with the status and prospects of the analyses of KLOE-2 data. A new measurement of the charge asymmetry in KS semileptonic decays with 1.7 fb−1 of KLOE data, which improves the sensitivity of previous measurements of about a factor two, will be presented. Furthermore, the status of the analysis devoted to directly test T and CPT symmetries in neutral kaons transitions, as well as the search of the pure CP-violating KS → 3π0 decay using part of the recently acquired KLOE-2 dataset, will be presented. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
46. Tau decays into two mesons: an overview.
- Author
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Gonzàlez-Solís, Sergi, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
KAON decay ,SCALAR field theory ,NEUTRINO interactions ,NUCLEAR physics experiments ,ELECTRON-electron interactions - Abstract
We review the state-of-the-art theoretical analyses of tau decays into a pair of mesons and a neutrino. The participant vector and scalar form factors, f
+ (s) and f0 (s), are described in the frame of Chiral Perturbation Theory with resonances supplemented by dispersion relations, and the physical parameters of the intermediate resonances produced in the decay are extracted through the pole position of f+,0 (s) in the complex plane. As a side result, we also determine the low-energy observables associated to the form factors. We hope our study to be of interest for present and future experimental analyses of these decays. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
47. Leptonic decays of the tau lepton.
- Author
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Fael, Matteo, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
NEGATIVE tau lepton ,LEPTONS (Nuclear physics) ,CONSTRAINTS (Physics) ,STANDARD model (Nuclear physics) ,RADIATIVE flow - Abstract
In these proceedings we review the SM prediction for the tau leptonic decays, including the radiative (τ → ℓ λ ν ν ¯) $ (\tau \to \ell \lambda \nu \bar \nu) $ and the five-body (τ → ℓ ℓ ′ ℓ ′ ν ν ¯) $ (\tau \to \ell \ell '\ell '\nu \bar \nu) $ decay modes, which are among the most powerful tools to study precisely the structure of the weak interaction and to constrain possible contributions beyond the V–A coupling of the Standard Model. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
48. Semileptonic τ decays: powerful probes of non-standard charged current weak interactions.
- Author
-
Roig, Pablo, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
SEMILEPTONIC kaon decay ,STANDARD model (Nuclear physics) ,HADRON colliders ,ELECTRON-electron interactions ,NUCLEAR physics experiments - Abstract
When looking for heavy (O(few TeV)) New Physics, the most efficient way to bene?t from both high and low-energy measurements simultaneously is the use of the Standard Model Effective Field Theory (SMEFT). In this talk I highlight the importance of semileptonic τ decays in complementing, in this respect, the traditional low-energy precision observables and high-energy measurements. This is yet another reason for considering hadronic tau decays as golden channels at Belle-II beyond the unquestionable interest of the CP violation anomaly in τ → K
S πντ decays, that I also discuss within the effective theory. A couple of new results for τ− → K− ντ decays are also included. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
49. Measurement of the branching fractions of the decays τ−→ K−nπ0ντ (n = 0, 1, 2, 3) and τ−→ π−nπ0ντ (n = 3, 4) by BABAR
- Author
-
Lusiani, Alberto, Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
BRANCHING ratios ,RADIOACTIVE decay ,PHYSICAL measurements ,ELECTRON-electron interactions ,NUCLEAR physics experiments - Abstract
We report preliminary measurements of the branching fractions of the decays τ
− → K− nπ0 ντ (n = 0, 1, 2, 3) and τ− → π− nπ0 ντ (n = 3, 4), excluding the contributions that proceed through the decay of intermediate K0 and η mesons. The measurements are based on a data sample of 435 million τ pairs produced in e+ e− collisions at and near the γ(4S) peak and collected with the BABAR detector in 1999–2008. The measured branching fractions are B(τ− → K− ντ ) = (7.174±0.033±0.213)×10−3 , B(τ− → K− π0 ντ ) = (5.054± 0.021 ± 0.148) × 10−3 , B(τ− → K− 2π0 ντ ) = (6.151 ± 0.117 ± 0.338) × 10−4 , B(τ− → K− 3π0 ντ ) = (1.246 ± 0.164 ± 0.238) × 10−4 , B(τ− → π− 3π0 ντ ) = (1.168 ±0.006 ±0.038) ×10−2 , B(τ− → π− 4π0 ντ ) = (9.020 ±0.400 ±0.652) × 10−4 , where the ?rst uncertainty is statistical and the second one systematic. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
50. Measurement of the e+e−→ nn̅ cross section with the SND detector at the VEPP-2000 collider.
- Author
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Druzhinin, V.P., Serednyakov, S.I., Achasov, M.N., Ignatov, F.V., and Krokovny, P.P.
- Subjects
ELECTRON-electron interactions ,NUCLEAR cross sections ,NUCLEAR counters ,NUCLEAR physics experiments ,COLLIDERS (Nuclear physics) - Abstract
New measurement of the e
+ e− → nn̅cross section based on the data set recorded in 2017 with the SND detector at the VEPP-2000 e+ e− collider is presented.Inthe energyrangefromthe thresholdupto2GeVthe cross section is almost flat. Its average value is 0.5 nb. The polar angle distribution indicates dominanceof the magnetic formfactor GM. [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
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