ISSN - 05503213, Nuclear Physics B, 2001, vol. 600, p. 3-20
Search for the radiative decay η→π0γγ in the SND experiment at VEPP-2M
The η→π0γγ decay was investigated by the SND detector at VEPP-2M e+e- collider in the reaction e+e-→φ→ηγ. Here we present the results and some details of this study. We report an upper limit (90% c.l.) Br(η→π0γγ)<8.4×10-4 as our final result. Our upper limit does not contradict the earlier measurement by GAMS spectrometer. To facilitate future studies a rather detailed review of the problem is also given. © 2001 Elsevier Science B.V.