Investigation of the e+e−→ωπ0→π0π0γ reaction in the energy domain near the φ-meson

1999/07/31 by М. Н. Ачасов, M. N. Achasov, V. M. Aulchenko +33 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph

paper · pdf · doi:10.1016/s0550-3213(99)00482-4

published as Nucl.Phys.B569:158-182,2000 · 34 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

openalex publication_date 2000/03/01 · arxiv created 2008/03/31 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/29

Abstract

The e⁺e^- → ωπ⁰ → π⁰ π⁰ γ process was investigated in the SND experiment at the VEPP-2M collider. A narrow energy interval near the ϕ-meson was scanned. The observed cross-section reveals, at the level of three standard deviation, the interference effect caused by ϕ→ π⁰π⁰γ decay. The cross-section parameters, as well as the real and imaginary parts of the ϕ-meson related amplitude, were measured.

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