Contributions of and in the Charmed Three-Body Meson Decays

Figure 1

Typical diagrams for the quasi-two-body decays including the emission diagram (a) with the transition, the emission diagram (c) with the transition, and the annihilation diagrams (b) and (d). The symbol ⊗ stands for the weak vertex, and × denotes possible attachments of hard gluons.

(a)

(b)

(c)

(d)