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diff --git a/analyses/pluginMisc/BABAR_2007_S7266081.cc b/analyses/pluginMisc/BABAR_2007_S7266081.cc
--- a/analyses/pluginMisc/BABAR_2007_S7266081.cc
+++ b/analyses/pluginMisc/BABAR_2007_S7266081.cc
@@ -1,178 +1,174 @@
// -*- C++ -*-
#include <iostream>
#include "Rivet/Analysis.hh"
#include "Rivet/Projections/UnstableFinalState.hh"
namespace Rivet {
/// @brief BABAR tau lepton to three charged hadrons
/// @author Peter Richardson
class BABAR_2007_S7266081 : public Analysis {
public:
BABAR_2007_S7266081()
: Analysis("BABAR_2007_S7266081"),
_weight_total(0),
_weight_pipipi(0), _weight_Kpipi(0), _weight_KpiK(0), _weight_KKK(0)
{ }
void init() {
declare(UnstableFinalState(), "UFS");
_hist_pipipi_pipipi = bookHisto1D( 1, 1, 1);
_hist_pipipi_pipi = bookHisto1D( 2, 1, 1);
_hist_Kpipi_Kpipi = bookHisto1D( 3, 1, 1);
_hist_Kpipi_Kpi = bookHisto1D( 4, 1, 1);
_hist_Kpipi_pipi = bookHisto1D( 5, 1, 1);
_hist_KpiK_KpiK = bookHisto1D( 6, 1, 1);
_hist_KpiK_KK = bookHisto1D( 7, 1, 1);
_hist_KpiK_piK = bookHisto1D( 8, 1, 1);
_hist_KKK_KKK = bookHisto1D( 9, 1, 1);
_hist_KKK_KK = bookHisto1D(10, 1, 1);
}
void analyze(const Event& e) {
double weight = e.weight();
// Find the taus
Particles taus;
foreach(const Particle& p, apply<UnstableFinalState>(e, "UFS").particles(Cuts::pid==PID::TAU)) {
_weight_total += weight;
Particles pip, pim, Kp, Km;
unsigned int nstable = 0;
- // Get the boost to the rest frame
- LorentzTransform cms_boost;
- if (p.p3().mod() > 1*MeV)
- cms_boost = LorentzTransform::mkFrameTransformFromBeta(p.momentum().betaVec());
// Find the decay products we want
findDecayProducts(p, nstable, pip, pim, Kp, Km);
if (p.pid() < 0) {
swap(pip, pim);
swap(Kp, Km );
}
if (nstable != 4) continue;
// pipipi
if (pim.size() == 2 && pip.size() == 1) {
_weight_pipipi += weight;
_hist_pipipi_pipipi->
fill((pip[0].momentum()+pim[0].momentum()+pim[1].momentum()).mass(), weight);
_hist_pipipi_pipi->
fill((pip[0].momentum()+pim[0].momentum()).mass(), weight);
_hist_pipipi_pipi->
fill((pip[0].momentum()+pim[1].momentum()).mass(), weight);
}
else if (pim.size() == 1 && pip.size() == 1 && Km.size() == 1) {
_weight_Kpipi += weight;
_hist_Kpipi_Kpipi->
fill((pim[0].momentum()+pip[0].momentum()+Km[0].momentum()).mass(), weight);
_hist_Kpipi_Kpi->
fill((pip[0].momentum()+Km[0].momentum()).mass(), weight);
_hist_Kpipi_pipi->
fill((pim[0].momentum()+pip[0].momentum()).mass(), weight);
}
else if (Kp.size() == 1 && Km.size() == 1 && pim.size() == 1) {
_weight_KpiK += weight;
_hist_KpiK_KpiK->
fill((Kp[0].momentum()+Km[0].momentum()+pim[0].momentum()).mass(), weight);
_hist_KpiK_KK->
fill((Kp[0].momentum()+Km[0].momentum()).mass(), weight);
_hist_KpiK_piK->
fill((Kp[0].momentum()+pim[0].momentum()).mass(), weight);
}
else if (Kp.size() == 1 && Km.size() == 2) {
_weight_KKK += weight;
_hist_KKK_KKK->
fill((Kp[0].momentum()+Km[0].momentum()+Km[1].momentum()).mass(), weight);
_hist_KKK_KK->
fill((Kp[0].momentum()+Km[0].momentum()).mass(), weight);
_hist_KKK_KK->
fill((Kp[0].momentum()+Km[1].momentum()).mass(), weight);
}
}
}
void finalize() {
if (_weight_pipipi > 0.) {
scale(_hist_pipipi_pipipi, 1.0/_weight_pipipi);
scale(_hist_pipipi_pipi , 0.5/_weight_pipipi);
}
if (_weight_Kpipi > 0.) {
scale(_hist_Kpipi_Kpipi , 1.0/_weight_Kpipi);
scale(_hist_Kpipi_Kpi , 1.0/_weight_Kpipi);
scale(_hist_Kpipi_pipi , 1.0/_weight_Kpipi);
}
if (_weight_KpiK > 0.) {
scale(_hist_KpiK_KpiK , 1.0/_weight_KpiK);
scale(_hist_KpiK_KK , 1.0/_weight_KpiK);
scale(_hist_KpiK_piK , 1.0/_weight_KpiK);
}
if (_weight_KKK > 0.) {
scale(_hist_KKK_KKK , 1.0/_weight_KKK);
scale(_hist_KKK_KK , 0.5/_weight_KKK);
}
/// @note Using autobooking for these scatters since their x values are not really obtainable from the MC data
bookScatter2D(11, 1, 1, true)->point(0).setY(100*_weight_pipipi/_weight_total, 100*sqrt(_weight_pipipi)/_weight_total);
bookScatter2D(12, 1, 1, true)->point(0).setY(100*_weight_Kpipi/_weight_total, 100*sqrt(_weight_Kpipi)/_weight_total);
bookScatter2D(13, 1, 1, true)->point(0).setY(100*_weight_KpiK/_weight_total, 100*sqrt(_weight_KpiK)/_weight_total);
bookScatter2D(14, 1, 1, true)->point(0).setY(100*_weight_KKK/_weight_total, 100*sqrt(_weight_KKK)/_weight_total);
}
private:
//@{
// Histograms
Histo1DPtr _hist_pipipi_pipipi, _hist_pipipi_pipi;
Histo1DPtr _hist_Kpipi_Kpipi, _hist_Kpipi_Kpi, _hist_Kpipi_pipi;
Histo1DPtr _hist_KpiK_KpiK, _hist_KpiK_KK, _hist_KpiK_piK;
Histo1DPtr _hist_KKK_KKK, _hist_KKK_KK;
// Weights counters
double _weight_total, _weight_pipipi, _weight_Kpipi, _weight_KpiK, _weight_KKK;
//@}
void findDecayProducts(const Particle &mother,
unsigned int & nstable,
Particles& pip, Particles& pim,
Particles& Kp, Particles& Km) {
for (const Particle &p : mother.children()) {
long id = p.pdgId();
if (id == PID::PI0 )
++nstable;
else if (id == PID::K0S)
++nstable;
else if (id == PID::PIPLUS) {
pip.push_back(p);
++nstable;
}
else if (id == PID::PIMINUS) {
pim.push_back(p);
++nstable;
}
else if (id == PID::KPLUS) {
Kp.push_back(p);
++nstable;
}
else if (id == PID::KMINUS) {
Km.push_back(p);
++nstable;
}
else if (!p.children().empty()) {
findDecayProducts(p, nstable, pip, pim, Kp, Km);
}
else ++nstable;
}
}
};
// The hook for the plugin system
DECLARE_RIVET_PLUGIN(BABAR_2007_S7266081);
}

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