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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/FastJets.hh"
#include "Rivet/Tools/Cutflow.hh"
namespace Rivet {
/// Search for R-parity-violating SUSY in multi-jet final states at 13 TeV
class ATLAS_2018_I1667046 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(ATLAS_2018_I1667046);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Projections
const FinalState fs (Cuts::abseta < 4.9);
declare("SmallRJ", FastJets(fs, FastJets::ANTIKT, 0.4));
declare("LargeRJ", FastJets(fs, FastJets::ANTIKT, 1.0));
// Book histograms
book(_h_sigmaM, "sigmaM", 50, 200, 2000);
book(_h_modeta, "ModEta12", 42, 0, 4.2);
// Cutflows
_flows.addCutflow("CutFlow1",
{"NJet >= 4 ", "Delta12 < 1.4", "PJet1 > 400 GeV", "M SumJ > 1.0 ",
"NbJet > 0", "M SumJ > 1.0 & NbJet > 0"});
_flows.addCutflow("CutFlow2",
{"NJet >= 4 ", "Delta12 < 1.4", "NJet >= 5 ", "M SumJ > 0.8 ",
"NbJet > 0", "M SumJ > 0.8 & NbJet > 0"});
}
/// Perform the per-event analysis
void analyze(const Event& event) {
_flows.fillinit();
// Trim large-R jets and apply cuts
Jets LRJ_old = apply<FastJets>(event, "LargeRJ").jetsByPt(Cuts::abseta < 4.9);
Jets LRJJ;
fastjet::Filter trimmer(fastjet::JetDefinition(fastjet::kt_algorithm,0.2), fastjet::SelectorPtFractionMin(0.05));
for (Jet& j: LRJ_old) LRJJ.push_back(trimmer(j));
Jets LRJ = ifilter_select(LRJJ, Cuts::abseta < 2.0 && Cuts::pT > 200*GeV);
if (LRJ.size() < 4) vetoEvent;
LRJ = sortByPt(LRJ); // sorting for constructing sigmaM
// Small R jets need to pass some cuts + need to be BTagged.
const Jets SRJ = apply<FastJets>(event, "SmallRJ").jetsByPt(Cuts::abseta < 2.5 && Cuts::pT > 50*GeV);
Jets BT_SRJ = filter_select(SRJ, hasBTag(Cuts::pT > 5*GeV));
const int tagg = (BT_SRJ.size() == 0) ? 1 : 0; //if there are no B-TAGGED jets are present, tagg = 1.
// Now to find B-MATCHED Large R Jets: extra step, not useful for SR regions!
const Jets BM_LRJ = selectIfAnyDeltaRLess(LRJ, BT_SRJ, 1.0);
// Now to build observables SigmaM and deltaEta
// Add mass of leading four large R jets,
double sigmaM = 0.0;
for (const Jet& j : head(LRJ, 4)) sigmaM += j.mass();
_h_sigmaM->fill(sigmaM);
// Build deta between two leading large-R jets
const double delta_eta = fabs(deltaEta(LRJ[0], LRJ[1]));
_h_modeta->fill(delta_eta);
// CutFlow1
if (LRJ.size() >= 4) {
_flows["CutFlow1"].fill(1);
if (delta_eta < 1.4) {
_flows["CutFlow1"].fill(2);
if (LRJ[0].pT() > 400*GeV) {
_flows["CutFlow1"].fill(3);
if (sigmaM > 1000*GeV)
_flows["CutFlow1"].fill(4);
if (tagg == 0) {
_flows["CutFlow1"].fill(5);
if (sigmaM > 1000*GeV){
_flows["CutFlow1"].fill(6);
}
} //end of btagg loop
} //end of pT loop
} //end of delta loop
} //end of Njet>4 loop
// CutFlow2
if (LRJ.size() >= 4) {
_flows["CutFlow2"].fill(1);
if (delta_eta < 1.4) {
_flows["CutFlow2"].fill(2);
if (LRJ.size() >= 5) {
_flows["CutFlow2"].fill(3);
if (sigmaM > 800*GeV)
_flows["CutFlow2"].fill(4);
if (tagg == 0) {
_flows["CutFlow2"].fill(5);
if (sigmaM > 800*GeV){_flows["CutFlow2"].fill(6);
}
} //end of btagg loop
} //Njet>5 loop
} //end of delta loop
} //Njet>4 loop
}
/// Normalise histograms etc., after the run
void finalize() {
const double expected = 36.1*crossSection()/femtobarn;
normalize(_h_sigmaM, expected/sumOfWeights());
normalize(_h_modeta, expected/sumOfWeights());
// _flows.scale(99.7/numEvents());
// @todo suppress output in reentrant mode?
MSG_INFO(_flows);
}
//@}
private:
/// @name Histograms
Histo1DPtr _h_sigmaM, _h_modeta;
// Cutflows
Cutflows _flows;
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(ATLAS_2018_I1667046);
}
|