NNNLO splitting functions

Classes
class	apfel::P3nsp
	Space-like O(αs4) non-singlet-plus unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/1707.08315.pdf. More...
class	apfel::P3nsm
	Space-like O(αs4) non-singlet-minus unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/1707.08315.pdf. More...
class	apfel::P3nss
	Space-like O(αs4) non-singlet-valence unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/1707.08315.pdf. More...
class	apfel::P3ps
	Space-like O(αs4) pure-singlet unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/2302.07593.pdf. More...
class	apfel::P3qg
	Space-like O(αs4) quark-gluon unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/2307.04158.pdf. More...
class	apfel::P3gq
	Space-like O(αs4) gluon-quark unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/2310.05744.pdf. More...
class	apfel::P3gg
	Space-like O(αs4) gluon-gluon unpolarised splitting function. Parameterisation determined in https://arxiv.org/pdf/2310.05744.pdf. More...

Detailed Description

Note

For now only leading-color plus, minus, and valence contributions have been computed and parameterised. The singlet ones are also parameterised and using the first Mellin moments and the small- and large-x asymptotic behaviours.