Backward spin polarizability ${\gamma }_{\pi }$ of the proton

M. Camen, K. Kossert, F. Wissmann +21

Using the Mainz $48cmØ\times 64cm$ NaI(Tl) detector and the segmented Göttingen recoil detector SENECA in coincidence, Compton scattering by the proton at ${\theta }_{\gamma }^{lab}=136^{\circ }$…