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26 April 2024

» arxiv » hep-ex/0302004

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Experimental study of the e+e- -> pi0 gamma process in the energy region sqrt(s)=0.60-0.97 GeV
M. N. Achasov ; K. I. Beloborodov ; A. V. Berdugin ; A. G. Bogdanchikov ; A. V. Bozhenok ; A. D. Bukin ; D. A. Bukin ; T. V. Dimova ; V. P. Druzhinin ; V. B. Golubev ; V. N. Ivanchenko ; A. A. Korol ; S. V. Koshuba ; E. V. Pakhtusova ; A. A. Polunin ; E. E. Pyata ; A. A. Salnikov ; S. I. Serednyakov ; V. V. Shary ; Yu. M. Shatunov ; V. A. Sidorov ; Z. K. Silagadze ; A. N. Skrinsky ; A. G. Skripkin ; Yu. V. Usov ; A. A. Valishev ; A. V. Vasiljev ;
Date:	5 Feb 2003
Journal:	Phys.Lett. B559 (2003) 171-178
Subject:	hep-ex
Abstract:	Results of the study of the e+e-->pi0 gamma process with SND detector at VEPP-2M collider in the c.m.s. energy range sqrt(s)=0.60-0.97 GeV are presented. Using 36513 selected events corresponding to a total integrated luminosity of 3.4 pb^-1 the e+e-->pi0 gamma cross section was measured. The energy dependence of the cross section was analyzed in the framework of the vector meson dominance model. The data are well described by a sum of phi,omega,rho0->pi0 gamma decay contributions with measured decay probabilities: Br(omega->pi0 gamma)=(9.34+-0.15+-0.31)% and Br(rho0->pi0 gamma)=(5.15+-1.16+-0.73)*10^-4 . The rho-omega relative interference phase is phi(rho,omega}=(-10.2+-6.5+-2.5) degree.
Source:	arXiv, hep-ex/0302004
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