For the final states f and g, these regions are labeled by i and j, respectively.2 The branching fraction for D0 → fi and D0 → fi decays are defined, Kif = |Afp|2φ(p)dp i K¯if = |A¯fp|2φ(p)dp, i (2.2) where φ(p) gives the density of states at p. From ...