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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief D_s D_s* spectrum
class BABAR_2002_I582184 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(BABAR_2002_I582184);
/// @name Analysis methods
///@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(UnstableParticles(), "UFS");
// Book histograms
// rates
book(_c_Ds_on ,2,1,1);
book(_c_Ds_off ,1,1,1);
book(_c_DsStar_on ,2,1,2);
book(_c_DsStar_off,1,1,2);
book(_w_ups ,"/TMP/w_ups" );
// dists
book(_h_Ds_on ,5,1,1);
book(_h_Ds_off ,3,1,2);
book(_h_DsStar_on ,5,1,2);
book(_h_DsStar_off,4,1,2);
}
/// Perform the per-event analysis
void analyze(const Event& event) {
// Find the Upsilon(4S) among the unstables
const UnstableParticles& ufs = apply<UnstableParticles>(event, "UFS");
bool cont = ufs.particles(Cuts::pid==300553).empty();
if(!cont) _w_ups ->fill();
for(const Particle &p : ufs.particles(Cuts::abspid==431 or Cuts::abspid==433)) {
double mom=p.momentum().p3().mod();
if(cont) {
if(p.abspid()==431) {
_h_Ds_off->fill(mom);
_c_Ds_off->fill(0.5);
}
else {
_h_DsStar_off->fill(mom);
_c_DsStar_off->fill(0.5);
}
}
else {
if(p.abspid()==431) {
_h_Ds_on->fill(mom);
_c_Ds_on->fill(0.5);
}
else {
_h_DsStar_on->fill(mom);
_c_DsStar_on->fill(0.5);
}
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
normalize(_h_Ds_on );
normalize(_h_Ds_off );
normalize(_h_DsStar_on );
normalize(_h_DsStar_off);
if(_w_ups->val()!=0) {
scale(_c_Ds_on ,0.5/ *_w_ups);
scale(_c_DsStar_on,0.5/ *_w_ups);
}
scale(_c_Ds_off , crossSection()/sumOfWeights()/picobarn);
scale(_c_DsStar_off, crossSection()/sumOfWeights()/picobarn);
}
///@}
/// @name Histograms
///@{
Histo1DPtr _h_Ds_on,_h_Ds_off,_h_DsStar_on,_h_DsStar_off;
Histo1DPtr _c_Ds_on,_c_Ds_off,_c_DsStar_on,_c_DsStar_off;
CounterPtr _w_ups;
///@}
};
RIVET_DECLARE_PLUGIN(BABAR_2002_I582184);
}
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