constants.h File Reference

#include <math.h>
#include <string>
#include <map>

Go to the source code of this file.

Namespaces
	ePDF

Variables
Definitions for recurrent constants.
const double	ePDF::Pi2 = M_PI * M_PI
const double	ePDF::FourPi = 4 * M_PI
const double	ePDF::emc = 0.5772156649015329
const double	ePDF::zeta2 = 1.6449340668482264
const double	ePDF::zeta3 = 1.2020569031595943
const double	ePDF::zeta4 = 1.0823232337111382
const double	ePDF::zeta5 = 1.0369277551433699
QCD colour factors
const double	ePDF::TR = 1.
const double	ePDF::CF = 1.
const double	ePDF::CA = 0.
const double	ePDF::NC = 3.
Electron mass
@]
const double	ePDF::me = 0.510998928e-3
Perturbative order map
const std::map< std::string, int >	ePDF::ptmap = {{"LL", 0}, {"NLL", 1}}