Study of theππmass spectra in the processe+e−→π+π−π0ats≃1020MeV
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Study of theππmass spectra in the processe+e−→π+π−π0ats≃1020MeV

M. N. Achasov,V. M. Aulchenko,K. I. Beloborodov,A. V. Berdyugin,A. G. Bogdanchikov,A. V. Bozhenok,A. D. Bukin,D. A. Bukin,S. V. Burdin,T. V. Dimova,V. P. Druzhinin,V. B. Golubev,V. N. Ivanchenko,P. M. Ivanov,A. A. Korol,M. S. Korostelev,S. V. Koshuba,A. V. Otboev,E. V. Pakhtusova,E. A. Perevedentsev,A. A. Salnikov,S. I. Serednyakov,V. V. Shary,Yu. M. Shatunov,V. A. Sidorov,Z. K. Silagadze,A. V. Vasiljev,Yu. S. Velikzhanin;M. N. Achasov;V. M. Aulchenko;K. I. Beloborodov;A. V. Berdyugin;A. G. Bogdanchikov;A. V. Bozhenok;A. D. Bukin;D. A. Bukin;S. V. Burdin;T. V. Dimova;V. P. Druzhinin;V. B. Golubev;V. N. Ivanchenko;P. M. Ivanov;A. A. Korol;M. S. Korostelev;S. V. Koshuba;A. V. Otboev;E. V. Pakhtusova;E. A. Perevedentsev;A. A. Salnikov;S. I. Serednyakov;V. V. Shary;Yu. M. Shatunov;V. A. Sidorov;Z. K. Silagadze;A. V. Vasiljev;Yu. S. Velikzhanin;
physical review d 2002 Vol. 65 pp. 032002-
192
velikzhanin2002physicalstudy

Abstract

The invariant mass spectra of the π+π− and π±π0 pairs in the process e+e−→π+π−π0 were studied in the Spherical Neutral Detector experiment at the VEPP-2M collider in the energy region s≃1020 MeV. These studies were based on about 0.5×106 events. The spectra were analyzed in the framework of the vector meson dominance model. It was found that the experimental data can be described assuming the e+e−→ρπ→π+π−π0 transition only. An upper limit on the branching ratio of the φ(1020)→π+π−π0 decay through intermediate states different from ρπ was obtained at the 90% confidence level: B(φ→π+π−π0)

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DOI:
10.1103/physrevd.65.032002
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https://sciprofiles.com/publication/view/11ee2bd2f...

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