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diff --git a/src/Projections/ZFinder.cc b/src/Projections/ZFinder.cc
--- a/src/Projections/ZFinder.cc
+++ b/src/Projections/ZFinder.cc
@@ -1,116 +1,119 @@
// -*- C++ -*-
#include "Rivet/Projections/ZFinder.hh"
#include "Rivet/Projections/PromptFinalState.hh"
#include "Rivet/Projections/InvMassFinalState.hh"
#include "Rivet/Projections/VetoedFinalState.hh"
namespace Rivet {
ZFinder::ZFinder(const FinalState& inputfs,
const Cut & fsCut,
PdgId pid,
double minmass, double maxmass,
double dRmax,
ChargedLeptons chLeptons,
ClusterPhotons clusterPhotons,
PhotonTracking trackPhotons,
double masstarget)
{
setName("ZFinder");
_minmass = minmass;
_maxmass = maxmass;
_masstarget = masstarget;
_pid = abs(pid);
_trackPhotons = trackPhotons;
IdentifiedFinalState bareleptons;
if (chLeptons == PROMPTCHLEPTONS)
bareleptons = IdentifiedFinalState(PromptFinalState(inputfs));
else
bareleptons = IdentifiedFinalState(inputfs);
bareleptons.acceptIdPair(_pid);
const bool doClustering = (clusterPhotons != NOCLUSTER);
const bool useDecayPhotons = (clusterPhotons == CLUSTERALL);
DressedLeptons leptons(inputfs, bareleptons, (doClustering ? dRmax : -1.0), fsCut, useDecayPhotons);
addProjection(leptons, "DressedLeptons");
VetoedFinalState remainingFS;
remainingFS.addVetoOnThisFinalState(*this);
addProjection(remainingFS, "RFS");
}
/////////////////////////////////////////////////////
Particles ZFinder::constituentLeptons() const {
if (empty()) return Particles();
return boson().constituents();
// return boson().constituents(isChargedLepton);
}
Particles ZFinder::constituentLeptons(const ParticleSorter& cmp) const {
return sortBy(constituentLeptons(), cmp);
}
const VetoedFinalState& ZFinder::remainingFinalState() const {
return getProjection<VetoedFinalState>("RFS");
}
int ZFinder::compare(const Projection& p) const {
PCmp LCcmp = mkNamedPCmp(p, "DressedLeptons");
if (LCcmp != EQUIVALENT) return LCcmp;
const ZFinder& other = dynamic_cast<const ZFinder&>(p);
return (cmp(_minmass, other._minmass) ||
cmp(_maxmass, other._maxmass) ||
cmp(_pid, other._pid) ||
cmp(_trackPhotons, other._trackPhotons));
}
void ZFinder::project(const Event& e) {
clear();
// Get leptons and find an acceptable invariant mass OSSF pair
const DressedLeptons& leptons = applyProjection<DressedLeptons>(e, "DressedLeptons");
InvMassFinalState imfs(std::make_pair(_pid, -_pid), _minmass, _maxmass, _masstarget);
auto dressed = leptons.dressedLeptons();
Particles tmp(dressed.begin(), dressed.end());
imfs.calc(tmp);
- if (imfs.particlePairs().size() < 1) return;
+ if (imfs.particlePairs().empty()) {
+ MSG_TRACE("No acceptable inv-mass lepton/antilepton pairs found");
+ return;
+ }
// Assemble a pseudo-Z particle
const ParticlePair& Zconstituents = imfs.particlePairs().front();
const Particle& p1(Zconstituents.first), p2(Zconstituents.second);
const FourMomentum pZ = p1.momentum() + p2.momentum();
assert(p1.charge3() + p2.charge3() == 0);
Particle z(PID::Z0BOSON, pZ);
+ MSG_DEBUG("Z " << pZ << " reconstructed from: " << p1 << " + " << p2);
// Debug printout
- stringstream msg;
- msg << "Z " << pZ << " reconstructed from: \n"
- << " " << p1.momentum() << " " << p1.pid() << "\n"
- << " + " << p2.momentum() << " " << p2.pid();
- MSG_DEBUG(msg.str());
+ //stringstream msg;
+ //msg << "Z " << pZ << " reconstructed from: " << p1 << " + " << p2);
+ //p1.momentum() << " " << p1.pid() << " + " << p2.momentum() << " " << p2.pid();
+ //MSG_DEBUG(msg.str());
// Add (dressed) lepton constituents to the W (skipping photons if requested)
// Keep the DressedLeptons found by the ZFinder
const DressedLepton l1 = p1.charge() > 0 ? p1 : p2;
z.addConstituent(_trackPhotons ? l1 : l1.bareLepton());
const DressedLepton l2 = p2.charge() < 0 ? p2 : p1;
z.addConstituent(_trackPhotons ? l2 : l2.bareLepton());
// Register the completed Z
_theParticles.push_back(z);
}
}

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