On a search for the
decay at the VEPP-2000 e+e-
M. N. Achasov+*, A. Yu. Barnyakov+*, K. I. Beloborodov+*, A. V. Berdyugin+*, A. G. Bogdanchikov+, A. A. Botov+, T. V. Dimova+*, V. P. Druzhinin+*, V. B. Golubev+*, L. V. Kardapoltsev+*, A. G. Kharlamov+*, I. A. Koop+*×, L. A. Korneev+*, A. A. Korol+*, S. V. Koshuba+, D. P. Kovrizhin+*, A. S. Kupich+, A. P. Lysenko+, K. A. Martin+*, N. Yu. Muchnoi+*, A. E. Obrazovsky+, E. V. Pakhtusova+, E. A. Perevedentsev+*, Yu. A. Rogovsky+*, A. I. Senchenko+*, S. I. Serednyakov+*, Z. K. Silagadze+*, Yu. M. Shatunov+*, D. A. Shtol+, D. B. Shwartz+*, A. N. Skrinsky+, I. K. Surin+*, Yu. A. Tikhonov+*, Yu. V. Usov+*, A. V. Vasiljev+*, I. M. Zemlyansky+*
+Budker Institute of Nuclear Physics SB of the RAS, 630090 Novosibirsk, Russia
*Novosibirsk State University, 630090 Novosibirsk, Russia
×Novosibirsk State Technical University, 630092 Novosibirsk, Russia
A sensitivity of the VEPP-2000 e+e- collider
in a search for the rare decay has been studied.
The inverse reaction 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 in the decay mode
In the absence of background, a sensitivity to
can be reached during two weeks of VEPP-2000 operation.
Such a sensitivity is better than the current upper limit on
by a factor of 2.3.