Study of thee+e−→ηγprocess with Spherical Neutral Detector at the VEPP-2Me+e−collider
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Study of thee+e−→ηγprocess with Spherical Neutral Detector at the VEPP-2Me+e−collider

M. N. Achasov,V. M. Aulchenko,K. I. Beloborodov,A. V. Berdyugin,A. G. Bogdanchikov,A. V. Bozhenok,D. A. Bukin,T. V. Dimova,V. P. Druzhinin,V. B. Golubev,Aleksandr Korol,S. V. Koshuba,A. V. Otboev,E. V. Pakhtusova,S. I. Serednyakov,Yu. M. Shatunov,V. A. Sidorov,Z. K. Silagadze,A. N. Skrinsky,A. V. Vasiljev;M. N. Achasov;V. M. Aulchenko;K. I. Beloborodov;A. V. Berdyugin;A. G. Bogdanchikov;A. V. Bozhenok;D. A. Bukin;T. V. Dimova;V. P. Druzhinin;V. B. Golubev;Aleksandr Korol;S. V. Koshuba;A. V. Otboev;E. V. Pakhtusova;S. I. Serednyakov;Yu. M. Shatunov;V. A. Sidorov;Z. K. Silagadze;A. N. Skrinsky;A. V. Vasiljev;
physical review d 2006 Vol. 74 pp. 014016-
169
vasiljev2006physicalstudy

Abstract

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=0.60–1.38 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 ρ(770), ω(783), ϕ(1020), ρ′(1465) resonances and agrees with results of previous measurements. The decay probabilities B(ϕ→ηγ), B(ω→ηγ) and B(ρ→ηγ) were measured with the accuracies better than or comparable to the world averages.

Keywords

neutral gev detector resonances collider luminosity vepp 2me

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DOI:
10.1103/physrevd.74.014016
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https://sciprofiles.com/publication/view/f3891e85d...

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