Study of the Process e+e− → − ηγ →7 γ in the Energy Range √ s = 1.07−2 GeV

M. N. Achasov,A. Yu. Barnyakov,K. I. Beloborodov,A. V. Berdyugin,A. G. Bogdanchikov, A. A. Botov, V. S. Denisov,T. V. Dimova,V. P. Druzhinin, L. B. Fomin, A. G. Kharlamov, L. V. Kardapoltsev, A. N. Kyrpotin, I. A. Koop,A. A. Korol, D. P. Kovrizhin, A. P. Kryukov,A. S. Kupich, N. A. Melnikova,N. Yu. Muchnoi,A. E. Obrazovsky,E. V. Pakhtusova,E. A. Perevedentsev, K. V. Pugachev,Yu. A. Rogovsky, S. I. Serednyakov, Z. K. Silagadze,I. K. Surin, M. V. Timoshenko,Yu. V. Usov,V. N. Zhabin, V. V. Zhulanov, I. M. Zemlyansky,Yu. M. Shatunov, D. A. Shtol, E. A. Eminov

Ядерная физика（2023）

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摘要

The e+e− → ηγ cross section is measured in the center-of-mass energy range from 1.07 to 2.00 GeV in the decay channel η → 3π0, π0 → γγ. The data set with an integrated luminosity of 242 pb−1accumulated in the experiment with the SND detector at the VEPP-2000 e+e− collider is analyzed.

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Study of the Process e+e− → − ηγ →7 γ in the Energy Range √&#x0D; s = 1.07−2 GeV

Study of the Process e+e− → − ηγ →7 γ in the Energy Range √ s = 1.07−2 GeV