%0 Journal Article
%T On a search for the $¦Ç\rightarrow e^+ e^-$ decay at the VEPP-2000 $e^+e^-$ collider
%A M. N. Achasov
%A A. Yu. Barnyakov
%A K. I. Beloborodov A. V. Berdyugin
%A A. G. Bogdanchikov
%A A. A. Botov
%A T. V. Dimova
%A V. P. Druzhinin
%A V. B. Golubev
%A L. V. Kardapoltsev
%A A. G. Kharlamov
%A I. A. Koop
%A L. A. Korneev
%A A. A. Korol
%A D. P. Kovrizhin
%A A. S. Kupich
%A A. P. Lysenko
%A K. A. Martin
%A N. Yu. Muchnoi
%A A. E. Obrazovsky
%A E. V. Pakhtusova
%A E. A. Perevedentsev
%A Yu. A. Rogovsky
%A A. I. Senchenko
%A S. I. Serednyakov
%A Z. K. Silagadze
%A Yu. M. Shatunov
%A D. A. Shtol
%A D. B. Shwartz
%A A. N. Skrinsky
%A I. K. Surin
%A Yu. A. Tikhonov
%A Yu. V. Usov
%A A. V. Vasiljev
%A I. M. Zemlyansky
%J Physics
%D 2015
%I arXiv
%X A sensitivity of the VEPP-2000 $e^+e^-$ collider in a search for the rare decay $\eta \rightarrow e^+ e^-$ has been studied. The inverse reaction $e^+ e^- \rightarrow \eta$ is proposed for this search. We have analyzed a data sample with an integrated luminosity of 108 nb$^{-1}$ collected with the SND detector in the center-of-mass energy range 520-580 MeV and found no background events for the reaction $e^+ e^- \rightarrow \eta$ in the decay mode $\eta\to\pi^0\pi^0\pi^0$. In the absence of background, a sensitivity to ${\cal B}(\eta \rightarrow e^+ e^-)$ of $10^{-6}$ can be reached during two weeks of VEPP-2000 operation. Such a sensitivity is better than the current upper limit on ${\cal B}(\eta \rightarrow e^+ e^-)$ by a factor of 2.3.
%U http://arxiv.org/abs/1507.02073v2