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arXiv · hep-ex/0109016

Radiative decay width of the a2(1320)^- meson

The SELEX collaboration·V. V. Molchanov
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Abstract

Coherent pi^+pi^-pi^- production in the interactions of a beam of 600 GeV pi^- mesons with C, Cu and Pb nuclei has been studied with the SELEX facility (Experiment E781 at Fermilab). The a2(1320) meson signal has been detected in the Coulomb (low q^2) region. The Primakoff formalism used to extract radiative decay width of this meson yields Gamma=284+/-25+/-25 keV, which is the most precise measurement to date.

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The SELEX collaboration, V. V. Molchanov. 2001-10-03. Radiative decay width of the a2(1320)^- meson. https://doi.org/10.1016/s0370-2693(01)01194-7

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