Name: YJZ Date: 08/29/11-03:30:05 AM Z


«HighEnergyPhysics`fc`

OneLoop[q, FAD[q, {q + k1, MC}, {q - k2, MC}]]
   I \[Pi]^2 C0[SP[k1, k1], SP[k2, k2],
  SP[k1, k1] + 2 SP[k1, k2] + SP[k2, k2], MC^2, 0, MC^2]

OneLoop[q, FAD[{q, mg}, {q + k1, MC}, {q - k2, MC}]]

   I \[Pi]^2 C0[SP[k1, k1], SP[k2, k2],
  SP[k1, k1] + 2 SP[k1, k2] + SP[k2, k2], MC^2, MC^2, mg^2]

The same function with different mass1, the result is different.