B0[pp, ma^2, mb^2] is the Passarino-Veltman two-point
integral B_0. All arguments are scalars
and have dimension mass squared. If the option BReduce is
set to True, certain B0’s are reduced to
A0’s. Setting the option B0Unique to
True simplifies B0[a,0,a] and
B0[0,0,a].
B0[SP[p, p], m^2, m^2]\text{B}_0\left(\overline{p}^2,m^2,m^2\right)
B0[0, 0, m^2, B0Unique -> True, B0Real -> True]\text{B}_0\left(0,m^2,m^2\right)+1
B0[m^2, 0, m^2, B0Unique -> True, B0Real -> True]\text{B}_0\left(0,m^2,m^2\right)+2
B0[0, m^2, m^2]\text{B}_0\left(0,m^2,m^2\right)