Rivet analyses referenceCLEO_1983_I188805Measurement of the hadronic cross section between9.46 and 10.355 GeVExperiment: CLEO (CESR) Inspire ID: 188805 Status: VALIDATED Authors:
Beam energies: ANY Run details:
Measurement of the hadronic cross section between 9.46 and 10.355 GeV Source code: CLEO_1983_I188805.cc 1// -*- C++ -*-
2#include "Rivet/Analysis.hh"
3#include "Rivet/Projections/FinalState.hh"
4
5namespace Rivet {
6
7
8 /// @brief Add a short analysis description here
9 class CLEO_1983_I188805 : public Analysis {
10 public:
11
12 /// Constructor
13 RIVET_DEFAULT_ANALYSIS_CTOR(CLEO_1983_I188805);
14
15
16 /// @name Analysis methods
17 /// @{
18
19 /// Book histograms and initialise projections before the run
20 void init() {
21 declare(FinalState(), "FS");
22 // Book histograms
23 book(_c_hadrons, "/TMP/sigma_hadrons");
24 }
25
26
27 /// Perform the per-event analysis
28 void analyze(const Event& event) {
29 const FinalState& fs = apply<FinalState>(event, "FS");
30
31 map<long,int> nCount;
32 int ntotal(0);
33 for (const Particle& p : fs.particles()) {
34 nCount[p.pid()] += 1;
35 ++ntotal;
36 }
37 // mu+mu- + photons
38 if(nCount[-13]==1 and nCount[13]==1 &&
39 ntotal==2+nCount[22])
40 vetoEvent;
41 // everything else
42 else
43 _c_hadrons->fill();
44 }
45
46
47 /// Normalise histograms etc., after the run
48 void finalize() {
49 // R
50 double fact = crossSection()/ sumOfWeights() /nanobarn;
51 double sig_h = _c_hadrons->val()*fact;
52 double err_h = _c_hadrons->err()*fact;
53 Estimate1DPtr hadrons;
54 book(hadrons, 1,1,1);
55 for (auto& b : hadrons->bins()) {
56 if (inRange(sqrtS()/GeV, b.xMin(), b.xMax())) {
57 b.set(sig_h, err_h);
58 }
59 }
60 }
61
62 /// @}
63
64
65 /// @name Histograms
66 /// @{
67 CounterPtr _c_hadrons;
68 /// @}
69
70
71 };
72
73
74 RIVET_DECLARE_PLUGIN(CLEO_1983_I188805);
75
76
77}
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