Theory of rare charm decays

Abstract

Recent disagreement between experimental measurments of CP violating asymmetry in D -> K+ K- and D ->pi+ pi- and theoretical Standard model expectation motivated many studies within the Standard model and beyond. Rare charm decays offer new probe of possible signals beyond Standard model. CP conserving and CP violating contributions within the Standard model and beyond are reviewed for inclusive c -> u gamma and c ->u l+ l- and exclusive D ->V gamma, D ->P+ P-, D+ -> pi+ l+ l-, D -> l+ l- decays.