Study of the $e^+e^-\toηγ$ process with SND detector at the VEPP-2M $e^+e^-$ collider

Details Study of the $e^+e^-\toηγ$ process with SND detector at the VEPP-2M $e^+e^-$ collider Study of the $e^+e^-\toηγ$ process with SND detector at the VEPP-2M $e^+e^-$ collider

2006-05-26

arxiv.org/abs/hep-ex/0605109v2

Phys.Rev.D74:014016,2006

Physics

High Energy Physics

High Energy Physics - Experiment

13 pages, 6 figures, 5 tables

Scientific paper

10.1103/PhysRevD.74.014016

In experiment with the SND detector at VEPP-2M $e^+e^-$ collider the $e^+e^-\to\eta\gamma$ cross section was measured in the energy range $E$=0.60--1.38 GeV with the integrated luminosity of 27.8 pb$^{-1}$. The measured cross section is well described by the vector meson dominance model with contributions from the $\rho(770)$, $\omega(783)$, $\phi(1020)$, $\rho^{\prime}(1465)$ 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.

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