Radiative D∗ decay using heavy quark and chiral symmetry

Abstract The implications of chiral SU(3) L ×SU(3) R symmetry and heavy quark symmetry for the radiative decays D ∗0 →D 0 γ , D ∗+ →D + γ , and D s ∗ →D s γ are discussed. Particular attention is paid to SU(3) violating contributions of order m q 1 2 . Experimental data on these radiative decays provide constraints on the D ∗ Dπ coupling.