Photoproduction of the $A_{2}$ Meson in the Reaction $γ p \to n π^{+} π^{+} π^{-}$ and an Estimate of the $A_{2}$ $γ π$ Width

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1 December 1969

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 23 (22) , 1322-1324
https://doi.org/10.1103/physrevlett.23.1322

Abstract

We observe production of the

A_{2}

meson in the reaction

γ p \to n π^{+} π^{+} π^{-}

at 4.3 and 5.25 GeV. The data are consistent with a one-pion-exchange production mechanism and we give an estimate of

Γ (A_{2} \to γ π) \approx 0.5

MeV. A similar value for

Γ (A_{2} \to γ π)

is also obtained using a vector dominance model.

Keywords

This publication has 9 references indexed in Scilit:

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