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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/WFinder.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
namespace Rivet {
/// @brief MC validation analysis for W^+[enu]W^-[munu] events
class MC_WWINC : public Analysis {
public:
/// Default constructor
MC_WWINC()
: Analysis("MC_WWINC")
{ }
/// @name Analysis methods
//@{
/// Book histograms
void init() {
FinalState fs;
WFinder wenufinder(fs, Cuts::abseta < 3.5 && Cuts::pT > 25*GeV, PID::ELECTRON, 60.0*GeV, 100.0*GeV, 25.0*GeV, 0.2);
declare(wenufinder, "WenuFinder");
VetoedFinalState wmnuinput;
wmnuinput.addVetoOnThisFinalState(wenufinder);
WFinder wmnufinder(wmnuinput, Cuts::abseta < 3.5 && Cuts::pT > 25*GeV, PID::MUON, 60.0*GeV, 100.0*GeV, 25.0*GeV, 0.2);
declare(wmnufinder, "WmnuFinder");
// properties of the pair momentum
double sqrts = sqrtS()>0. ? sqrtS() : 14000.;
book(_h_WW_pT ,"WW_pT", logspace(100, 1.0, max(1.1,0.5*sqrts)));
book(_h_WW_pT_peak ,"WW_pT_peak", 25, 0.0, 25.0);
book(_h_WW_eta ,"WW_eta", 40, -7.0, 7.0);
book(_h_WW_phi ,"WW_phi", 25, 0.0, TWOPI);
book(_h_WW_m ,"WW_m", logspace(100, 150.0, 180.0+0.25*sqrts));
// correlations between the WW
book(_h_WW_dphi ,"WW_dphi", 25, 0.0, PI); /// @todo non-linear?
book(_h_WW_deta ,"WW_deta", 25, -7.0, 7.0);
book(_h_WW_dR ,"WW_dR", 25, 0.5, 7.0);
book(_h_WW_dpT ,"WW_dpT", logspace(100, 1.0, max(1.1,0.5*sqrts)));
book(_h_WW_costheta_planes ,"WW_costheta_planes", 25, -1.0, 1.0);
/// @todo fuer WW: missing ET
// properties of the W bosons
book(_h_W_pT ,"W_pT", logspace(100, 10.0, max(11.,0.25*sqrts)));
book(_h_W_eta ,"W_eta", 70, -7.0, 7.0);
// properties of the leptons
book(_h_Wl_pT ,"Wl_pT", logspace(100, 30.0, max(31., 0.1*sqrts)));
book(_h_Wl_eta ,"Wl_eta", 40, -3.5, 3.5);
// correlations between the opposite charge leptons
book(_h_WeWm_dphi ,"WeWm_dphi", 25, 0.0, PI);
book(_h_WeWm_deta ,"WeWm_deta", 25, -5.0, 5.0);
book(_h_WeWm_dR ,"WeWm_dR", 25, 0.5, 5.0);
book(_h_WeWm_m ,"WeWm_m", 100, 0.0, 300.0);
}
/// Do the analysis
void analyze(const Event & e) {
const double weight = 1.0;
const WFinder& wenufinder = apply<WFinder>(e, "WenuFinder");
if (wenufinder.bosons().size()!=1) {
vetoEvent;
}
const WFinder& wmnufinder = apply<WFinder>(e, "WmnuFinder");
if (wmnufinder.bosons().size()!=1) {
vetoEvent;
}
FourMomentum wenu(wenufinder.bosons()[0].momentum());
FourMomentum wmnu(wmnufinder.bosons()[0].momentum());
FourMomentum ww(wenu+wmnu);
// find leptons
FourMomentum ep=wenufinder.constituentLeptons()[0].momentum();
FourMomentum enu=wenufinder.constituentNeutrinos()[0].momentum();
FourMomentum mm=wmnufinder.constituentLeptons()[0].momentum();
FourMomentum mnu=wmnufinder.constituentNeutrinos()[0].momentum();
_h_WW_pT->fill(ww.pT(),weight);
_h_WW_pT_peak->fill(ww.pT(),weight);
_h_WW_eta->fill(ww.eta(),weight);
_h_WW_phi->fill(ww.phi(),weight);
double mww2=ww.mass2();
if (mww2>0.0) _h_WW_m->fill(sqrt(mww2), weight);
_h_WW_dphi->fill(mapAngle0ToPi(wenu.phi()-wmnu.phi()), weight);
_h_WW_deta->fill(wenu.eta()-wmnu.eta(), weight);
_h_WW_dR->fill(deltaR(wenu,wmnu), weight);
_h_WW_dpT->fill(fabs(wenu.pT()-wmnu.pT()), weight);
Vector3 crossWenu = ep.p3().cross(enu.p3());
Vector3 crossWmnu = mm.p3().cross(mnu.p3());
double costheta = crossWenu.dot(crossWmnu)/crossWenu.mod()/crossWmnu.mod();
_h_WW_costheta_planes->fill(costheta, weight);
_h_W_pT->fill(wenu.pT(),weight);
_h_W_pT->fill(wmnu.pT(),weight);
_h_W_eta->fill(wenu.eta(),weight);
_h_W_eta->fill(wmnu.eta(),weight);
_h_Wl_pT->fill(ep.pT(), weight);
_h_Wl_pT->fill(mm.pT(), weight);
_h_Wl_eta->fill(ep.eta(), weight);
_h_Wl_eta->fill(mm.eta(), weight);
_h_WeWm_dphi->fill(mapAngle0ToPi(ep.phi()-mm.phi()), weight);
_h_WeWm_deta->fill(ep.eta()-mm.eta(), weight);
_h_WeWm_dR->fill(deltaR(ep,mm), weight);
double m2=FourMomentum(ep+mm).mass2();
if (m2 < 0) m2 = 0.0;
_h_WeWm_m->fill(sqrt(m2), weight);
}
/// Finalize
void finalize() {
const double norm = crossSection()/picobarn/sumOfWeights();
scale(_h_WW_pT, norm);
scale(_h_WW_pT_peak, norm);
scale(_h_WW_eta, norm);
scale(_h_WW_phi, norm);
scale(_h_WW_m, norm);
scale(_h_WW_dphi, norm);
scale(_h_WW_deta, norm);
scale(_h_WW_dR, norm);
scale(_h_WW_dpT, norm);
scale(_h_WW_costheta_planes, norm);
scale(_h_W_pT, norm);
scale(_h_W_eta, norm);
scale(_h_Wl_pT, norm);
scale(_h_Wl_eta, norm);
scale(_h_WeWm_dphi, norm);
scale(_h_WeWm_deta, norm);
scale(_h_WeWm_dR, norm);
scale(_h_WeWm_m, norm);
}
//@}
private:
/// @name Histograms
//@{
Histo1DPtr _h_WW_pT;
Histo1DPtr _h_WW_pT_peak;
Histo1DPtr _h_WW_eta;
Histo1DPtr _h_WW_phi;
Histo1DPtr _h_WW_m;
Histo1DPtr _h_WW_dphi;
Histo1DPtr _h_WW_deta;
Histo1DPtr _h_WW_dR;
Histo1DPtr _h_WW_dpT;
Histo1DPtr _h_WW_costheta_planes;
Histo1DPtr _h_W_pT;
Histo1DPtr _h_W_eta;
Histo1DPtr _h_Wl_pT;
Histo1DPtr _h_Wl_eta;
Histo1DPtr _h_WeWm_dphi;
Histo1DPtr _h_WeWm_deta;
Histo1DPtr _h_WeWm_dR;
Histo1DPtr _h_WeWm_m;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(MC_WWINC);
}
|