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  1. AU="SND Collaboration"
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Buch ; 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
Schlagwörter High Energy Physics - Experiment
Thema/Rubrik (Code) 551
Erscheinungsdatum 2021-10-12
Erscheinungsland us
Dokumenttyp Buch ; Online
Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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