Double ${\pi }^0$ Photoproduction off the Proton at Threshold

M. Kotulla, J. Ahrens, J. R. M. Annand +14

The reaction $\gamma p\to {\pi }^0{\pi }^{0}p$ has been measured using the TAPS BaF${}_2$ calorimeter at the tagged photon facility of the Mainz Microtron accelerator. Chiral perturbation theory (C…