Motivated by the recent measurement of D0→ρ0γ improved standard model (SM) predictions for branching ratios and CP asymmetries of radiative charm decay are given.
Weak annihilation induced decays are probes of non-perturbative QCD approaches.
Rare decays probe the SM and physics beyond the SM, e.g.~leptoquark and supersymmetric models.
Opportunities with Λc→pγ for future polarization measurements are presented.
