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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/UnstableParticles.hh"
namespace Rivet {
/// @brief baryon rates and spectra
class BELLE_2017_I1606201 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(BELLE_2017_I1606201);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
declare(UnstableParticles(), "UFS");
// Book histograms
for(unsigned int ix=1;ix<16;++ix) {
book(_h[ix], ix, 1, 1);
book(_r[ix], 16, 1, ix);
}
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const UnstableParticles& ufs = apply<UnstableParticles>(event, "UFS");
for (const Particle& p : ufs.particles()) {
const Vector3 mom3 = p.p3();
double pp = mom3.mod();
double xp = pp/sqrt(0.25*sqr(sqrtS())-sqr(p.mass()));
int id = abs(p.pid());
if(id==3122) {
_h[ 1]->fill(xp);
_r[ 1]->fill(0.5);
}
else if(id==3212) {
_h[ 2]->fill(xp);
_r[ 2]->fill(0.5);
}
else if(id==3224) {
_h[ 3]->fill(xp);
_r[ 3]->fill(0.5);
}
else if(id==3124) {
_h[ 4]->fill(xp);
_r[ 4]->fill(0.5);
}
else if(id==3312) {
_h[ 5]->fill(xp);
_r[ 5]->fill(0.5);
}
else if(id==3334) {
_h[ 6]->fill(xp);
_r[ 6]->fill(0.5);
}
else if(id==3324) {
_h[ 7]->fill(xp);
_r[ 7]->fill(0.5);
}
else if(id==4122) {
_h[ 8]->fill(xp);
_r[ 8]->fill(0.5);
}
else if(id==14122) {
_h[ 9]->fill(xp);
_r[ 9]->fill(0.5);
}
else if(id==4124) {
_h[10]->fill(xp);
_r[10]->fill(0.5);
}
else if(id==4112) {
_h[11]->fill(xp);
_r[11]->fill(0.5);
}
else if(id==4114) {
_h[12]->fill(xp);
_r[12]->fill(0.5);
}
else if(id==4332) {
if(isDecay(p,{3334,-211})) {
_h[13]->fill(xp);
_r[13]->fill(0.5);
}
}
else if(id==4132) {
if(isDecay(p,{3312,211})) {
_h[14]->fill(xp);
_r[14]->fill(0.5);
}
else if(isDecay(p,{3334,321})) {
_h[15]->fill(xp);
_r[15]->fill(0.5);
}
}
}
}
// Check for explicit decay into pdgids
bool isDecay(const Particle& mother, vector<int> ids) {
if(mother.pid()<0) {
for(unsigned int ix=0;ix<ids.size();++ix)
ids[ix] *= -1;
}
// Trivial check to ignore any other decays but the one in question modulo photons
const Particles children = mother.children(Cuts::pid!=PID::PHOTON);
if (children.size()!=ids.size()) return false;
// Check for the explicit decay
return all(ids, [&](int i){return count(children, hasPID(i))==1;});
}
/// Normalise histograms etc., after the run
void finalize() {
// norm to cross section
for(unsigned int ix=1;ix<16;++ix) {
if( ix<=4 || (ix>=8 &&ix<=12) )
scale(_h[ix], crossSection()/nanobarn/sumOfWeights());
else
scale(_h[ix], crossSection()/picobarn/sumOfWeights());
scale(_r[ix], crossSection()/picobarn/sumOfWeights());
}
}
//@}
/// @name Histograms
//@{
Histo1DPtr _h[16],_r[16];
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(BELLE_2017_I1606201);
}
|