Radiative resonance couplings in $\gamma \pi \to \pi \pi$

Martin Hoferichter, Bastian Kubis, Marvin Zanke

Studies of the reaction $\gamma \pi \to \pi \pi$, in the context of the ongoing Primakoff program of the COMPASS experiment at CERN, give access to the radiative couplings of the $\rho (770)$ and $ρ_…