9 research outputs found
Performance of the BGO endcap calorimeter with phototriode readout for the CMD-2 detector
No full text
Experimental study of the e+e−→π0γ process in the energy region s=0.60–0.97 GeV
No full textAbstractResults of the study of the e+e−→π0γ process with SND detector at VEPP-2M collider in the c.m.s. energy range s=0.60–0.97 GeV are presented. Using 36513 selected events, corresponding to a total integrated luminosity of 3.4 pb−1, the e+e−→π0γ cross section was measured. The energy dependence of the cross section was analyzed in the framework of the vector meson dominance model. The data are well described by a sum of φ,ω,ρ→π0γ decay contributions with measured decay probabilities: Br(ω→π0γ)=(9.34±0.15±0.31)% and Br(ρ0→π0γ)=(5.15±1.16±0.73)×10−4. The ρ–ω relative interference phase is ϕρω=(−10.2±6.5±2.5) degrees
