48 research outputs found
Study of the process with SND detector at the VEPP-2M collider
In experiment with the SND detector at VEPP-2M collider the
cross section was measured in the energy range
=0.60--1.38 GeV with the integrated luminosity of 27.8 pb. The
measured cross section is well described by the vector meson dominance model
with contributions from the , , ,
resonances and agrees with results of previous
measurements. The decay probabilities \BR(\phi\to\eta\gamma),
\BR(\omega\to\eta\gamma) and \BR(\rho\to\eta\gamma) were measured with the
accuracies better than or comparable to the world averages.Comment: 13 pages, 6 figures, 5 table
Study of the process in the c.m. energy range from threshold to 2 GeV with the CMD-3 detector
Using a data sample of 6.8 pb collected with the CMD-3 detector at the
VEPP-2000 collider we select about 2700 events of the process and measure its cross section at 12 energy ponts with about
6\% systematic uncertainty. From the angular distribution of produced nucleons
we obtain the ratio
Measurement of the Pion Form Factor in the Energy Range 1.04-1.38 GeV with the CMD-2 Detector
The cross section for the process is measured in the
c.m. energy range 1.04-1.38 GeV from 995 000 selected collinear events
including 860000 events, 82000 events, and 33000
events. The systematic and statistical errors of measuring the
pion form factor are equal to 1.2-4.2 and 5-13%, respectively.Comment: 5 pages, 2 figure