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  1. 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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  2. 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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  3. 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. /
    Borisov A.A. / Bogdanchikov A.G. / Berkaev D.E. / Berdyugin A.V. / Beloborodov K.I. / Barnyakov A.Yu. / Aulchenko V.M. / Achasov M.N. / Pakhtusova E.V. / Rogovsky Yu.A. / Serednyakov S.I. / Shatunov Yu.M. / Shtol D.A. / Shwartz D.B. / Silagadze Z.K. / Skovpen K.Yu. / Skrinsky A.N. / Surin I.K. / Tikhonov Yu.A. / Usov Yu.V. / Vasiljev A.V.

    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)

    Full text online

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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