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diff --git a/src/Analyses/ATLAS_2014_I1282441.cc b/src/Analyses/ATLAS_2014_I1282441.cc
--- a/src/Analyses/ATLAS_2014_I1282441.cc
+++ b/src/Analyses/ATLAS_2014_I1282441.cc
@@ -1,94 +1,94 @@
// -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/UnstableFinalState.hh"
#include "Rivet/Projections/IdentifiedFinalState.hh"
namespace Rivet {
class ATLAS_2014_I1282441 : public Analysis {
public:
ATLAS_2014_I1282441()
: Analysis("ATLAS_2014_I1282441")
{}
void init() {
// Use a large eta range such that we can discriminate on y
/// @todo Convert to use a y-cut directly
UnstableFinalState ufs(-10, 10, 0.5*GeV);
IdentifiedFinalState phis(ufs);
phis.acceptIdPair(PID::PHI);
addProjection(phis, "Phis");
IdentifiedFinalState kpms(-2.0, 2.0, 230*MeV);
kpms.acceptIdPair(PID::KPLUS);
addProjection(kpms, "Kpms");
_h_phi_rapidity = bookHisto1D(1,1,1);
_h_phi_pT = bookHisto1D(2,1,1);
}
void analyze(const Event& event) {
- const Particles& ks_all = applyProjection<IdentifiedFinalState>(event, "K+-s").particles();
+ const Particles& ks_all = applyProjection<IdentifiedFinalState>(event, "Kpms").particles();
Particles kp, km;
foreach (const Particle& p, ks_all) {
if (!p.hasAncestor(PID::PHI)) { MSG_DEBUG("-- K not from phi."); continue; }
if (p.p3().mod() > 800*MeV) { MSG_DEBUG("-- p K too high."); continue; }
(p.charge() > 0 ? kp : km).push_back(p);
}
const Particles& phis_all = applyProjection<FinalState>(event, "Phis").particles();
Particles phis;
/// @todo Use particles(Cuts&) instead
foreach (const Particle& p, phis_all) {
if ( p.absrap() > 0.8 ) { MSG_DEBUG("-- phi Y too high."); continue; }
if ( p.pT() > 1.2*GeV ) { MSG_DEBUG("-- phi pT too high."); continue; }
phis.push_back(p);
}
// Find Phi -> KK decays through matching of the kinematics
if (!kp.empty() && !km.empty() && !phis.empty()) {
const double w = event.weight();
MSG_DEBUG("Numbers of particles: #phi=" << phis.size() << ", #K+=" << kp.size() << ", #K-=" << km.size());
for (size_t ip = 0; ip < phis.size(); ++ip) {
const Particle& phi = phis[ip];
for (size_t ikm = 0; ikm < km.size(); ++ikm) {
for (size_t ikp = 0; ikp < kp.size(); ++ikp) {
const FourMomentum mom = kp[ikp].mom() + km[ikm].mom();
if ( fuzzyEquals(mom.mass(), phi.mass(), 1e-5) ) {
MSG_DEBUG("Accepted combinatoric: phi#:" << ip << " K+#:" << ikp << " K-#:" << ikm);
_h_phi_rapidity->fill(phi.absrap(), w);
_h_phi_pT->fill(phi.pT()/MeV, w);
} else {
MSG_DEBUG("Rejected combinatoric: phi#:" << ip << " K+#:" << ikp << " K-#:" << ikm << " Mass difference is " << mom.mass()-phi.mass());
}
}
}
}
}
}
void finalize() {
scale(_h_phi_rapidity, crossSection()/microbarn/sumOfWeights());
scale(_h_phi_pT, crossSection()/microbarn/sumOfWeights());
}
private:
Histo1DPtr _h_phi_rapidity, _h_phi_pT;
};
DECLARE_RIVET_PLUGIN(ATLAS_2014_I1282441);
}

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