Rivet analyses referenceMC_WKTSPLITTINGSMonte Carlo validation observables for $k_\perp$ splitting scales in $W[\ell \, \nu]$ + jets eventsExperiment: () Status: VALIDATED Authors:
Beams: * * Beam energies: ANY Run details:
Monte Carlo validation observables for $k_\perp$ splitting scales in $W[\ell \, \nu]$ + jets events 60 GeV $<m_W<$ 100 GeV cut applied. Source code: MC_WKTSPLITTINGS.cc 1// -*- C++ -*-
2#include "Rivet/Analyses/MC_KTSPLITTINGS_BASE.hh"
3#include "Rivet/Projections/PromptFinalState.hh"
4#include "Rivet/Projections/VetoedFinalState.hh"
5#include "Rivet/Projections/LeptonFinder.hh"
6#include "Rivet/Projections/MissingMomentum.hh"
7#include "Rivet/Projections/FastJets.hh"
8
9namespace Rivet {
10
11
12 /// @brief MC validation analysis for kt splitting scales in W + jets events
13 class MC_WKTSPLITTINGS : public MC_KTSPLITTINGS_BASE {
14 public:
15
16 /// Default constructor
17 MC_WKTSPLITTINGS()
18 : MC_KTSPLITTINGS_BASE("MC_WKTSPLITTINGS", 4, "Jets")
19 { }
20
21
22 /// @name Analysis methods
23 /// @{
24
25 /// Book histograms
26 void init() {
27
28 // Use analysis options
29 _dR = (getOption("SCHEME") == "BARE") ? 0.0 : 0.2;
30 _lepton = (getOption("LMODE") == "MU") ? PID::MUON : PID::ELECTRON;
31 const double ETACUT = getOption<double>("ABSETALMAX", 3.5);
32 const double PTCUT = getOption<double>("PTLMIN", 25.);
33 const Cut cut = Cuts::abseta < ETACUT && Cuts::pT > PTCUT*GeV;
34
35 // Define projections
36 LeptonFinder lf(_dR, cut && Cuts::abspid == _lepton);
37 declare(lf, "Leptons");
38
39 VetoedFinalState jetinput;
40 jetinput.vetoFinalState(lf);
41 const double R = getOption<double>("R", 0.6);
42 FastJets fj(jetinput, JetAlg::KT, R);
43 declare(fj, "Jets");
44
45 MC_KTSPLITTINGS_BASE::init();
46 }
47
48
49 /// Do the analysis
50 void analyze(const Event& event) {
51
52 // MET cut
53 const P4& pmiss = apply<MissingMom>(event, "MET").missingMom();
54 if (pmiss.pT() < 25*GeV) vetoEvent;
55
56 // Identify the closest-matching l+MET to m == mW
57 const Particles& ls = apply<LeptonFinder>(event, "Leptons").particles();
58 const int ifound = closestMassIndex(ls, pmiss, 80.4*GeV, 60*GeV, 100*GeV);
59 if (ifound < 0) vetoEvent;
60
61 MC_KTSPLITTINGS_BASE::analyze(event);
62 }
63
64
65 /// Finalize
66 void finalize() {
67 MC_KTSPLITTINGS_BASE::finalize();
68 }
69
70 /// @}
71
72
73 protected:
74
75 /// @name Parameters for specialised e/mu and dressed/bare subclassing
76 /// @{
77 double _dR;
78 PdgId _lepton;
79 /// @}
80
81 };
82
83
84 RIVET_DECLARE_PLUGIN(MC_WKTSPLITTINGS);
85
86}
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