Rare radiative charm decays in the standard model and beyond

Abstract

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.