The functions Gam, Co, and Z denote the vertex, matching coefficient,
and QCD renomalization constant of the different currents. The currents
are denoted by the arguments "scalar", "gamma0", "gammaperp", and
"tensor" (as strings), respectively.
The functions delGamnm, delConm, and delZnm denote the additional
contributions for a nonzero light quark mass to the corresponding
functions above. To evaluate these expressions the package HPL.m
is needed. The results for the master integrals, which are not known
analytically, are included as interpolating functions in the file Sol_MI.m.
The functions delGamnmexp and delConmexp denote the corresponding functions
given as expansions in x.
Symbols:
as0pi - bare alpha_s/Pi
aspi - alpha_s(mu)/Pi defined with n_f flavours
asmpi - alpha_s(m)/Pi defined with n_f' flavours
dmf - m*(Z_m-1) (mass counterterm vertex)
dmfm - mc*(Z_mc-1) (mass counterterm vertex for the light quark mass mc)
M1 - m
eM1 - (mu^2/m^2)^ep
lmM1 - Log[mu^2/m^2]