Experimental Study of rho -> pi0 pi0 gamma and omega -> pi0 pi0 gamma Decays
M. N. Achasov, K. I. Beloborodov, A. V. Berdyugin, A. G. Bogdanchikov,, A. V. Bozhenok, D. A. Bukin, S. V. Burdin, A. V. Vasiljev, V. B. Golubev, T., V. Dimova, V. P. Druzhinin, V. N. Ivanchenko, A. A. Korol, I. A. Koop, S. V., Koshuba, A. V. Otboev, E. V. Pakhtusova
TL;DR
This study measures the branching ratios of rho and omega meson decays into pi0 pi0 gamma using e+e- collision data in the 0.60-0.97 GeV energy range, providing experimental insights into these rare decay processes.
Contribution
First experimental determination of rho and omega meson decay branching ratios into pi0 pi0 gamma in the specified energy region.
Findings
Measured B(omega -> pi0 pi0 gamma) = (6.6 +1.4-0.8(stat) +-0.6(syst)) x 10^-5
Measured B(rho -> pi0 pi0 gamma) = (4.1 +1.0-0.9(stat) +-0.3(syst)) x 10^-5
Performed energy-dependent cross section analysis in e+e- collisions
Abstract
The e+e- -> pi0 pi0 gamma process was studied in the SND experiment at VEPP-2M e+e- collider in the energy region 0.60-0.97 GeV. From the analysis of the energy dependence of measured cross section the branching ratios B(omega -> pi0 pi0 gamma)= (6.6 +1.4-0.8(stat) +-0.6(syst))x10^-5 and B(rho -> pi0 pi0 gamma)=(4.1 +1.0-0.9(stat) +-0.3(syst))x10^-5 were obtained.
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