PPSUtilities.h

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#ifndef PPSTOOLS_UTILITIES
#define PPSTOOLS_UTILITIES
#include <cmath>
#include <string>
#include <CLHEP/Units/PhysicalConstants.h>
#include <CLHEP/Units/GlobalSystemOfUnits.h>
#include "TLorentzVector.h"


class H_BeamParticle;

namespace HepMC
{
    class GenParticle;
}

namespace PPSTools {

  struct FullBeamInfo {
    double fCrossingAngleBeam1;
    double fCrossingAngleBeam2;
    double fBeamMomentum;
    double fBeamEnergy;
  };

  struct LimitedBeamInfo {
    double fBeamMomentum;
    double fBeamEnergy;
  };

const double   urad     = 1./1000000.; 
const double ProtonMass=CLHEP::proton_mass_c2/GeV;
const double ProtonMassSQ=pow(ProtonMass,2);

TLorentzVector HectorParticle2LorentzVector(H_BeamParticle hp,int );

H_BeamParticle LorentzVector2HectorParticle(TLorentzVector p);

void LorentzBoost(H_BeamParticle& h_p,int dir, const std::string& frame, FullBeamInfo const& bi);

void LorentzBoost(TLorentzVector& p_out, const std::string& frame, FullBeamInfo const& bi);

void LorentzBoost(HepMC::GenParticle& p_out, const std::string& frame, FullBeamInfo const& bi);

void Get_t_and_xi(const TLorentzVector* proton,double& t,double& xi, LimitedBeamInfo const& bi) ;

};
#endif