Approximated NNLO massive coefficient functions

Classes
class	apfel::Cm2a3gNC
	Approximated O(αs3) gluon coefficient function for F2. More...
class	apfel::Cm2a3psNC
	Approximated O(αs3) pure-singlet coefficient function for F2. More...
class	apfel::CmLa3gNC
	Approximated O(αs3) gluon coefficient function for FL. More...
class	apfel::CmLa3psNC
	Approximated O(αs3) pure-singlet coefficient function for FL. More...

Detailed Description

Note

They are obtained as a combination of small-x, large-x, and Q >> m limits. The original idea is that of https://arxiv.org/pdf/1205.5727. Here we use the implementation presented in the code ADANI (https://github.com/niclaurenti/adani).