Probing QCD dynamics and the standard model with $D_{(s)}\to P^{+}{P}^0\gamma$ decays

Nico Adolph, Gudrun Hiller

We compute 10 radiative three-body decays of charged charmed mesons $D^{+}\to P^{+}{P}^0\gamma$ and $D_s\to P^{+}{P}^0\gamma$, $P=\pi ,K$, in leading order QCDF, HH$\chi$PT and the soft photon approx…