constants.h

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//
// ePDF
//
 
#pragma once
 
#include <math.h>
#include <string>
#include <map>
 
namespace ePDF
{
  const double Pi2    = M_PI * M_PI;
  const double FourPi = 4 * M_PI;
  const double emc    = 0.5772156649015329;
  const double zeta2  = 1.6449340668482264;
  const double zeta3  = 1.2020569031595943;
  const double zeta4  = 1.0823232337111382;
  const double zeta5  = 1.0369277551433699;
 
  const double TR = 1.;
  const double CF = 1.;
  const double CA = 0.;
  const double NC = 3.;
 
  const double me = 0.510998928e-3;
 
  std::map<std::string, int> const ptmap = {{"LL", 0}, {"NLL", 1}};
}