Rivet analyses referenceDM2_1983_I190558Cross section for $e^+e^-\to p\bar{p}$ between 1.975 and 2.250 GeVExperiment: DM2 (DCI) Inspire ID: 190558 Status: VALIDATED Authors:
Beam energies: ANY Run details:
1// -*- C++ -*-
2#include "Rivet/Analysis.hh"
3#include "Rivet/Projections/FinalState.hh"
4#include "Rivet/Projections/FastJets.hh"
5
6namespace Rivet {
7
8
9 /// @brief e+ e- > p pbar
10 class DM2_1983_I190558 : public Analysis {
11 public:
12
13 /// Constructor
14 RIVET_DEFAULT_ANALYSIS_CTOR(DM2_1983_I190558);
15
16
17 /// @name Analysis methods
18 /// @{
19
20 /// Book histograms and initialise projections before the run
21 void init() {
22
23 // Initialise and register projections
24 declare(FinalState(), "FS");
25
26 // Book histograms
27 book(_nproton, "TMP/proton", refData(1,1,1));
28 }
29
30
31 /// Perform the per-event analysis
32 void analyze(const Event& event) {
33 const FinalState& fs = apply<FinalState>(event, "FS");
34 if(fs.particles().size()!=2) vetoEvent;
35 for (const Particle& p : fs.particles()) {
36 if(abs(p.pid())!=PID::PROTON) vetoEvent;
37 }
38 _nproton->fill(sqrtS()/MeV);
39 }
40
41
42 /// Normalise histograms etc., after the run
43 void finalize() {
44 scale(_nproton, crossSection()/ sumOfWeights() /nanobarn);
45 Estimate1DPtr mult;
46 book(mult, 1, 1, 1);
47 barchart(_nproton,mult);
48 }
49
50 /// @}
51
52
53 /// @name Histograms
54 /// @{
55 Histo1DPtr _nproton;
56 /// @}
57
58
59 };
60
61
62 RIVET_DECLARE_PLUGIN(DM2_1983_I190558);
63
64
65}
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