Radiative three-body D-meson decays in and beyond the standard model

Nico Adolph, Joachim Brod, Gudrun Hiller

We study radiative charm decays $D\to P_1{P}_2\gamma$, $P_{1,2}=\pi ,K$ in QCD factorization at leading order and within heavy hadron chiral perturbation theory. Branching ratios includin…