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| // -*- C++ -*-
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/FinalState.hh"
#include "Rivet/Projections/Sphericity.hh"
#include "Rivet/Projections/Thrust.hh"
namespace Rivet {
/// @brief Add a short analysis description here
class TASSO_1984_I195333 : public Analysis {
public:
/// Constructor
RIVET_DEFAULT_ANALYSIS_CTOR(TASSO_1984_I195333);
/// @name Analysis methods
//@{
/// Book histograms and initialise projections before the run
void init() {
// Initialise and register projections
const FinalState fs;
declare(fs, "FS");
declare(Sphericity(fs), "Sphericity");
declare(Thrust(fs), "Thrust");
// counters for R
book(_c_hadrons, "/TMP/sigma_hadrons");
book(_c_muons, "/TMP/sigma_muons");
book(_h_weight, "/TMP/HWeight");
unsigned int iloc(0);
sqs = sqrtS();
if(isCompatibleWithSqrtS(14)) {
iloc = 1;
sqs = 14.;
}
else if(isCompatibleWithSqrtS(22)) {
iloc = 2;
sqs = 22.;
}
else if(isCompatibleWithSqrtS(34)) {
iloc = 3;
sqs = 34.;
}
if(iloc!=0) {
book(_h_mult, 3,1,iloc);
book(_h_p, 5,1,iloc);
book(_h_xp, 6,1,iloc);
book(_h_pl, 7,1,iloc);
book(_h_pt, 8,1,iloc);
book(_h_pt2, 9,1,iloc);
book(_h_xl, 10,1,iloc);
book(_h_xT, 11,1,iloc);
book(_h_S, 12,1,iloc);
book(_h_T, 13,1,iloc);
book(_h_y, 14,1,iloc);
}
}
/// Perform the per-event analysis
void analyze(const Event& event) {
const FinalState& fs = apply<FinalState>(event, "FS");
map<long,int> nCount;
double ntotal(0);
unsigned int nCharged(0);
for (const Particle& p : fs.particles()) {
nCount[p.pid()] += 1;
if((p.pid()!=PID::PHOTON && p.abspid()!=PID::ELECTRON) ||
p.parents().empty() || p.parents()[0].pid()!=PID::PI0) {
ntotal += 1.;
}
else if(p.pid()==PID::PHOTON) {
ntotal += 0.5 ;
}
else {
ntotal += 0.25;
nCharged -=1;
}
if(PID::isCharged(p.pid())) {
++nCharged;
}
}
// mu+mu- + photons
if(nCount[-13]==1 and nCount[13]==1 &&
int(fs.particles().size())==2+nCount[22]) {
_c_muons->fill();
return;
}
// everything else
_c_hadrons->fill();
_h_weight->fill();
_n_charged.fill(nCharged);
_n_total.fill(ntotal);
// thrust
const Thrust& thrust = apply<Thrust>(event, "Thrust");
_thrust.fill(thrust.thrust());
// sphericity
const Sphericity& sphericity = apply<Sphericity>(event, "Sphericity");
_sphericity.fill(sphericity.sphericity());
// global distributions
if(_h_mult) _h_mult->fill(nCharged);
if(_h_S) _h_S ->fill(sphericity.sphericity());
if(_h_T) _h_T ->fill(thrust.thrust());
// single particle distributions
for (const Particle& p : fs.particles()) {
if(!PID::isCharged(p.pid())) continue;
const Vector3 mom3 = p.p3();
double pp = mom3.mod();
_p_total.fill(pp);
if(_h_p) _h_p ->fill(pp);
if(_h_xp) _h_xp->fill(2.*pp/sqrtS());
const double mom = dot(sphericity.sphericityAxis(), mom3);
_p_l.fill(fabs(mom));
if(_h_pl) _h_pl->fill(fabs(mom));
if(_h_xl) _h_xl->fill(2.*fabs(mom)/sqrtS());
const double pTin = dot(mom3, sphericity.sphericityMajorAxis());
_pt2_in.fill(sqr(pTin));
const double pTout = dot(mom3, sphericity.sphericityMinorAxis());
_pt2_out.fill(sqr(pTout));
double pT = sqr(pTin) + sqr(pTout);
_pt2.fill(pT);
if(_h_pt2) _h_pt2->fill(pT);
pT=sqrt(pT);
_pt.fill(pT);
if(_h_pt) _h_pt->fill(pT);
if(_h_xT) _h_xT->fill(2.*pT/sqrtS());
if(_h_y) {
const double rap = 0.5 * log((p.E() + mom) /
(p.E() - mom));
_h_y->fill(fabs(rap));
}
}
}
/// Normalise histograms etc., after the run
void finalize() {
Scatter1D R = *_c_hadrons/ *_c_muons;
double rval = R.point(0).x();
pair<double,double> rerr = R.point(0).xErrs();
double fact = crossSection()/ sumOfWeights() /picobarn;
double sig_h = _c_hadrons->val()*fact;
double err_h = _c_hadrons->err()*fact;
double sig_m = _c_muons ->val()*fact;
double err_m = _c_muons ->err()*fact;
Scatter2D temphisto(refData(1, 1, 1));
Scatter2DPtr hadrons;
book(hadrons, "sigma_hadrons");
Scatter2DPtr muons;
book(muons, "sigma_muons" );
Scatter2DPtr mult;
book(mult, 1, 1, 1);
for (size_t b = 0; b < temphisto.numPoints(); b++) {
const double x = temphisto.point(b).x();
pair<double,double> ex = temphisto.point(b).xErrs();
pair<double,double> ex2 = ex;
if(ex2.first ==0.) ex2. first=0.0001;
if(ex2.second==0.) ex2.second=0.0001;
if (inRange(sqs, x-ex2.first, x+ex2.second)) {
mult ->addPoint(x, rval, ex, rerr);
hadrons->addPoint(x, sig_h, ex, make_pair(err_h,err_h));
muons ->addPoint(x, sig_m, ex, make_pair(err_m,err_m));
}
else {
mult ->addPoint(x, 0., ex, make_pair(0.,.0));
hadrons->addPoint(x, 0., ex, make_pair(0.,.0));
muons ->addPoint(x, 0., ex, make_pair(0.,.0));
}
}
// charged particle multiplicity distribution
if(_h_mult) normalize(_h_mult,2.);
for(unsigned int iy=1;iy<12;++iy) {
double value = 0.0, error = 0.0;
if(iy==1) {
value = _n_charged.xMean();
error = _n_charged.xStdErr();
}
else if(iy==2) {
double num = _n_charged.xMean();
double den = _n_total.xMean();
value = num/den;
error = value*sqrt(sqr(_n_charged.xStdErr()/num)+sqr(_n_total.xStdErr()/den));
}
else if(iy==3) {
value = _n_charged.xStdDev();
error = _n_charged.xStdErr();
}
else if(iy==4) {
value = _sphericity.xMean();
error = _sphericity.xStdErr();
}
else if(iy==5) {
value = _thrust.xMean();
error = _thrust.xStdErr();
}
else if(iy==6) {
value = _p_total.xMean();
error = _p_total.xStdErr();
}
else if(iy==7) {
value = _p_l.xMean();
error = _p_l.xStdErr();
}
else if(iy==8) {
value = _pt.xMean();
error = _pt.xStdErr();
}
else if(iy==9) {
value = _pt2.xMean();
error = _pt2.xStdErr();
}
else if(iy==10) {
value = _pt2_in.xMean();
error = _pt2_in.xStdErr();
}
else if(iy==11) {
value = _pt2_out.xMean();
error = _pt2_out.xStdErr();
}
Scatter2D temphisto(refData(4, 1, iy));
Scatter2DPtr mult;
book(mult, 4, 1, iy);
for (size_t b = 0; b < temphisto.numPoints(); b++) {
const double x = temphisto.point(b).x();
pair<double,double> ex = temphisto.point(b).xErrs();
pair<double,double> ex2 = ex;
if(ex2.first ==0.) ex2. first=0.0001;
if(ex2.second==0.) ex2.second=0.0001;
if (inRange(sqs, x-ex2.first, x+ex2.second)) {
mult ->addPoint(x, value, ex, make_pair(error,error));
}
else {
mult ->addPoint(x, 0., ex, make_pair(0.,.0));
}
}
}
// scale the distributions
scale(_h_p ,1./_h_weight->sumW());
scale(_h_xp ,1./_h_weight->sumW());
scale(_h_pl ,1./_h_weight->sumW());
scale(_h_pt ,1./_h_weight->sumW());
scale(_h_pt2,1./_h_weight->sumW());
scale(_h_xl ,1./_h_weight->sumW());
scale(_h_xT ,1./_h_weight->sumW());
scale(_h_S ,1./_h_weight->sumW());
scale(_h_T ,1./_h_weight->sumW());
scale(_h_y ,1./_h_weight->sumW());
}
//@}
/// @name Histograms
//@{
Histo1DPtr _h_mult,_h_p,_h_xp,_h_pl,_h_pt,_h_pt2,_h_xl,_h_xT,_h_S,_h_T,_h_y;
CounterPtr _c_hadrons, _c_muons;
YODA::Dbn1D _n_charged,_n_total,_sphericity,_thrust,_p_total,
_p_l,_pt,_pt2,_pt2_in,_pt2_out;
CounterPtr _h_weight;
double sqs;
//@}
};
// The hook for the plugin system
RIVET_DECLARE_PLUGIN(TASSO_1984_I195333);
}
|