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arXiv · hep-ex/0203006

The helicity amplitudes A$_{1/2}$ and A$_{3/2}$ for the D$_{13}(1520)$ resonance obtained from the $\vecγ \vec{p} \to p π^0$ reaction}

GDH-·A2-Collaborations·:·J. Ahrens
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Abstract

The helicity dependence of the $\vecγ \vec{p} \to p π^0$ reaction has been measured for the first time in the photon energy range from 550 to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4$π$-detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. These data are predominantly sensitive to the $D_{13}(1520)$ resonance and are used to determine its parameters.

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GDH-, A2-Collaborations, :, J. Ahrens. 2002-03-05. The helicity amplitudes A$_{1/2}$ and A$_{3/2}$ for the D$_{13}(1520)$ resonance obtained from the $\vecγ \vec{p} \to p π^0$ reaction}. https://doi.org/10.1103/physrevlett.88.232002

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