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ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2006, vol. 74, p. -

Study of the e+e-→ηγ process with Spherical Neutral Detector at the VEPP-2M e+e- collider

Achasov M. N., Aulchenko V. M., Beloborodov K. I., Berdyugin A. V., Bogdanchikov A. G., Bozhenok A. V., Bukin D. A., Dimova T. V., Druzhinin V. P., Golubev V. B., Korol A. A., Koshuba S. V., Otboev A. V., Pakhtusova E. V., Serednyakov S. I., Shatunov Yu M., Sidorov V. A., Silagadze Z. K., Skrinsky A. N., Vasiljev A. V.

In experiment with the SND detector at the VEPP-2M e+e- collider the e+e-→ηγ cross section was measured in the center-of-mass energy range E=0.60-1.38GeV with the integrated luminosity of 27.8pb-1. The measured cross section is well described by the vector meson dominance model with contributions from the ρ(770), ω(783), (1020), ρ′(1465) resonances and agrees with results of previous measurements. The decay probabilities B(→ηγ), B(ω→ηγ) and B(ρ→ηγ) were measured with the accuracies better than or comparable to the world averages. © 2006 The American Physical Society.