Rivet analyses

title: MARKI_1982_I169326

Charged particle multiplicity for energies between 2.6 and 7.8 GeV

Experiment: MARKI (SPEAR)

Inspire ID: 169326

Status: VALIDATED

Authors: - Peter Richardson

References: - Phys.Rev. D26 (1982) 969, 1982

Beams: e- e+

Beam energies: (1.3, 1.3); (1.4, 1.4); (1.5, 1.5); (1.6, 1.6); (1.6, 1.6); (1.6, 1.6); (1.7, 1.7); (1.7, 1.7); (1.8, 1.8); (1.8, 1.8); (1.8, 1.8); (1.8, 1.8); (1.9, 1.9); (1.9, 1.9); (1.9, 1.9); (1.9, 1.9); (2.0, 2.0); (2.0, 2.0); (2.0, 2.0); (2.0, 2.0); (2.1, 2.1); (2.1, 2.1); (2.1, 2.1); (2.1, 2.1); (2.2, 2.2); (2.2, 2.2); (2.2, 2.2); (2.2, 2.2); (2.3, 2.3); (2.3, 2.3); (2.3, 2.3); (2.4, 2.4); (2.4, 2.4); (2.5, 2.5); (2.5, 2.5); (2.6, 2.6); (2.6, 2.6); (2.7, 2.7); (2.8, 2.8); (2.8, 2.8); (2.9, 2.9); (2.9, 2.9); (2.9, 2.9); (2.9, 2.9); (3.0, 3.0); (3.0, 3.0); (3.0, 3.0); (3.0, 3.0); (3.0, 3.0); (3.1, 3.1); (3.1, 3.1); (3.1, 3.1); (3.1, 3.1); (3.2, 3.2); (3.2, 3.2); (3.2, 3.2); (3.2, 3.2); (3.3, 3.3); (3.3, 3.3); (3.3, 3.3); (3.4, 3.4); (3.4, 3.4); (3.4, 3.4); (3.4, 3.4); (3.5, 3.5); (3.5, 3.5); (3.5, 3.5); (3.5, 3.5); (3.5, 3.5); (3.6, 3.6); (3.6, 3.6); (3.6, 3.6); (3.6, 3.6); (3.7, 3.7); (3.7, 3.7); (3.7, 3.7); (3.8, 3.8); (3.9, 3.9)GeV

Run details: - e+e- to hadrons

Charged particle multiplicity for energies between 2.6 and 7.8 GeV.

Source code:MARKI_1982_I169326.cc

```c++ // -- C++ --

include "Rivet/Analysis.hh"

include "Rivet/Projections/ChargedFinalState.hh"

namespace Rivet {

/// @brief Charged multiplicity class MARKI_1982_I169326 : public Analysis { public:

/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(MARKI_1982_I169326);


/// @name Analysis methods
/// @{

/// Book histograms and initialise projections before the run
void init() {

  // Initialise and register projections
  declare(ChargedFinalState(), "FS");

  // Book histograms
  book(_nHadrons, 6, 1, 1);
  for (const string& en : _nHadrons.binning().edges<0>()) {
    const double eval = stod(en) * GeV;
    if (isCompatibleWithSqrtS(eval)) {
      _sqs = en;
      break;
    }
  }
  raiseBeamErrorIf(_sqs.empty());
}


/// Perform the per-event analysis
void analyze(const Event& event) {
  _nHadrons->fill(_sqs, apply<ChargedFinalState>(event, "FS").particles().size());
}


/// Normalise histograms etc., after the run
void finalize() { }
/// @}


/// @name Histograms
/// @{
BinnedProfilePtr<string> _nHadrons;
string _sqs = "";
/// @}

};

RIVET_DECLARE_PLUGIN(MARKI_1982_I169326);

} ```