Study of the process $e^+e^- \to \omega\pi^0 \to \pi^+\pi^-\pi^0\pi^0$ in the energy range $1.05-2.00$ GeV with SND

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

arXiv (Cornell University)(2023)

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摘要
The process $e^+e^- \to \omega\pi^0 \to \pi^+\pi^-\pi^0\pi^0$ is studied in the center-of-mass energy region $1.05-2.00$ GeV using data with an integral luminosity of about 35 pb$^{-1}$ collected with the SND detector at the VEPP-2000 $e^+e^-$ collider. In the energy range under study, the value of the measured Born cross section varies from 0.7 to 18 nb. The statistical uncertainty of the cross section is $2-23$%, while the systematic uncertainty is in the range of $3.0-14.2$%. The results are consistent with previous measurements but have better accuracy.
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energy range,process,\pi^-\pi^
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