Investigation of the $e^{+}{e}^{-}\to \omega {\pi }^0\to {\pi }^0{\pi }^0\gamma$ reaction in the energy domain near the $\varphi$-meson

Abstract

The $e^{+}{e}^{-}\to \omega {\pi }^0\to {\pi }^0{\pi }^0\gamma$ process was investigated in the SND experiment at the VEPP-2M collider. A narrow energy interval near the $\varphi$-meson was scanned. The observed cross-section reveals, at the level of three standard deviation, the interference effect caused by $\varphi \to {\pi }^0{\pi }^0\gamma$ decay. The cross-section parameters, as well as the real and imaginary parts of the $\varphi$-meson related amplitude, were measured.

arXiv comment34 pages, 7 figures, LaTeX, uses FEYNMAN package. Erroneously reported C_{12} coefficient corrected (an error discovered in hep-ph/0603241). in the published version Nucl. Phys. B569(2000), 158 this coefficient is reported incorrectly

References in corpus (8)

• Recent Developments in Chiral Perturbation Theory
• Rho-omega mixing, vector meson dominance and the pion form-factor
• First Observation of PHI(1020)--->PI0+PI0+GAMMA Decay
• Rho-omega Mixing and the Pion Electromagnetic Form-Factor
• $g_{\omega \rho \pi }$ reexamined
• Observation of the decay PHI(1020)--->OMEGA+PI0
• Energy calibration of the NaI(Tl) calorimeter of the SND detector using $e^{+}{e}^{-}\to e^{+}{e}^{-}$ events
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Cited by in corpus (16)

• Predictions for g-2 of the muon and alpha_QED(M_Z^2)
• The $\varphi (1020)\to {\pi }^0{\pi }^0\gamma$ decay
• The process $e^{+}{e}^{-}\to \omega {\pi }^0\to {\pi }^0{\pi }^0\gamma$ up to 1.4 GeV
• Dalitz plot analysis of e+ e- --> pi0 pi0 gamma events at SQRT(s) ~ M(phi) with the KLOE detector
• The e+ e- -> P1 P2 gamma processes close to the Phi peak: toward a model-independent analysis
• Experimental Study of rho -> pi0 pi0 gamma and omega -> pi0 pi0 gamma Decays
• Study of the process $e^{+}{e}^{-}\to \eta \gamma$ in the center-of-mass energy range 1.07--2.00 GeV
• Study of isospin violating $\varphi$ excitation in $e^{+}{e}^{-}\to \omega {\pi }^0$
• e+e- --> e+e- pi0 pi0 at Daphne
• Electromagnetic form factors of charged and neutral kaons in an extended vector-meson-dominance model
• Direct $CP$ violation of three bodies decay process from the resonance effect
• e+e- annihilation to (pi0 pi0 gamma) and (pi0 eta gamma) as a source of information on scalar and vector mesons
• Scalar sigma meson effects in radiative rho^0-meson decays
• VMD, chiral loops, sigma-meson, and omega-rho mixing in omega-->pi^0 pi^0 gamma decay
• CMD-2 and SND results on the rho, omega and phi
• Vector-Meson-Dominance model contribution to ${\pi }^0\to 4\gamma$