tools.h File Reference

#include <vector>
#include <string>

Go to the source code of this file.

Namespaces
namespace	apfel
	Namespace for all APFEL++ functions and classes.

Tools
Collection of useful tools.
enum	apfel::QuarkFlavour : int {   apfel::TOTAL , apfel::DOWN , apfel::UP , apfel::STRANGE ,   apfel::CHARM , apfel::BOTTOM , apfel::TOP }
int	apfel::NF (double const &Q, std::vector< double > const &Thresholds)
	Return the number of active flavours at the scale Q given the (ordered) vector of thresholds.
double	apfel::DeltaFun (double const &a, double const &b, double const &c)
	Utility function used by the heavy-quark initiated massive coefficient functions.
std::vector< double >	apfel::ElectroWeakCharges (double const &Q, bool const &virt, int const &Comp=TOTAL)
	Utility function for the computation of the electroweak charges, for both time-like and space-like virtualities (Reference: https://arxiv.org/pdf/hep-ph/9711387.pdf).
std::vector< double >	apfel::ParityViolatingElectroWeakCharges (double const &Q, bool const &virt, int const &Comp=TOTAL)
	Utility function for the computation of the parity-violating electroweak charges, for both time-like and space-like virtualities.
std::vector< double >	apfel::ElectroWeakChargesNWA ()
	Utility function for the computation of the electroweak charges for Drell-Yan in narrow-width appriximation.
std::vector< double >	apfel::ConcatenateAndSortVectors (std::vector< double > const &v1, std::vector< double > const &v2)
	Utility function that concatenates and sort the input vectors.
template<typename T >
double	apfel::dabs (T const &d)
	Absolute value of the object T. In the case of a Distribution, this is computed like the squared mean average of the entries of the joint grid. In the case of a set of distributions, the minimum dabs over the distributions is returned.
std::vector< double >	apfel::ProductExpansion (std::vector< double > const &r)
	Function that computes the coefficients of the expansion of a product of n binomials with zero's in r.
int	apfel::factorial (int const &n)
	Factorial of an integer.
double	apfel::GetSIATotalCrossSection (int const &PerturbativeOrder, double const &Q, double const &AlphaQCD, double const &AlphaQED, std::vector< double > const &Thresholds, QuarkFlavour const &Comp=TOTAL, bool const &NoCharges=false)
	Function that computes the total cross section in a electron-positron annihilation process.