UKUtility.cc File Reference

#include "TLorentzVector.h"
#include "TVector3.h"
#include "GeneratorInterface/Hydjet2Interface/interface/Particle.h"
#include "GeneratorInterface/Hydjet2Interface/interface/UKUtility.h"
#include "CLHEP/Random/RandomEngine.h"
#include "CLHEP/Random/RandFlat.h"

Go to the source code of this file.

Functions
void	IsotropicR3 (double r, double *x, double *y, double *z)
void	IsotropicR3 (double r, TVector3 &pos)
void	MomAntiMom (TLorentzVector &mom, double mass, TLorentzVector &antiMom, double antiMass, double initialMass)

Variables
const double	fermi = 1.
const double	GeV = 1.
const double	hbarc = 0.197 * GeV * fermi
const double	hbarc_squared = hbarc * hbarc
CLHEP::HepRandomEngine *	hjRandomEngine
const double	w = 1.0 / 0.1973

Function Documentation

void IsotropicR3	(	double	r,
		double *	x,
		double *	y,
		double *	z
	)

Definition at line 26 of file UKUtility.cc.

References funct::cos(), hjRandomEngine, PVValHelper::phi, Pi, alignCSCRings::r, and funct::sin().

Referenced by MomAntiMom().

                                                            {
  double pZ  = 1. - 2.*(CLHEP::RandFlat::shoot(hjRandomEngine));
  double st  = TMath::Sqrt(1. - pZ * pZ) * r;
  double phi = 2. * TMath::Pi() * (CLHEP::RandFlat::shoot(hjRandomEngine));

  *x = st * cos(phi);
  *y = st * sin(phi);
  *z = pZ * r;
}

void IsotropicR3	(	double	r,
		TVector3 &	pos
	)

Definition at line 36 of file UKUtility.cc.

References hjRandomEngine, PVValHelper::phi, Pi, and alignCSCRings::r.

                                          {
  double pZ  = 1. - 2.* (CLHEP::RandFlat::shoot(hjRandomEngine));  
  double st  = TMath::Sqrt(1. - pZ * pZ) * r;
  double phi = 2. * TMath::Pi() * (CLHEP::RandFlat::shoot(hjRandomEngine));
  pos.SetX(st * TMath::Cos(phi));
  pos.SetY(st * TMath::Sin(phi));
  pos.SetZ(pZ * r);
}

void MomAntiMom	(	TLorentzVector &	mom,
		double	mass,
		TLorentzVector &	antiMom,
		double	antiMass,
		double	initialMass
	)

Definition at line 45 of file UKUtility.cc.

References IsotropicR3(), and alignCSCRings::r.

Referenced by Decay().

                                             {
  double r = initialMass * initialMass - mass * mass - antiMass * antiMass;
  if (r * r - 4 * mass * mass * antiMass * antiMass < 0.) throw "MomAntiMom";
      
  double pAbs = .5 * TMath::Sqrt(r * r - 4 * mass * mass * antiMass * antiMass) / initialMass;
  TVector3 mom3;
  IsotropicR3(pAbs, mom3);
  mom.SetVectM(mom3, mass);
  antiMom.SetVectM(- mom3, antiMass);
}

Variable Documentation

const double fermi = 1.

Definition at line 21 of file UKUtility.cc.

const double GeV = 1.

Definition at line 20 of file UKUtility.cc.

const double hbarc = 0.197 * GeV * fermi

Definition at line 22 of file UKUtility.cc.

const double hbarc_squared = hbarc * hbarc

Definition at line 24 of file UKUtility.cc.

CLHEP::HepRandomEngine* hjRandomEngine

Definition at line 55 of file Hydjet2Hadronizer.h.

Referenced by gen::Hydjet2Hadronizer::doSetRandomEngine(), gen::Hydjet2Hadronizer::generatePartonsAndHadronize(), IsotropicR3(), and gen::Hydjet2Hadronizer::readSettings().

const double w = 1.0 / 0.1973

Definition at line 23 of file UKUtility.cc.

Referenced by EcalSelectiveReadoutSuppressor::accept(), edm::GlobalSchedule::actionTable(), edm::StreamSchedule::actionTable(), FastLineRecognition::Cluster::add(), MinL3Algorithm::addEvent(), MinL3AlgoUniv< IDdet >::addEvent(), hi::GenPlane::addParticle(), edm::WorkerManager::allWorkers(), PedsFullNoiseAlgorithm::analyse(), MultiTrackValidatorGenPs::analyze(), MultiTrackValidator::analyze(), DQMMessageLogger::analyze(), DQMSourceExample::analyze(), ValidationMisalignedTracker::analyze(), L1TDTTF::analyze(), NewMuonTrackValidator::analyze(), MuonTrackValidator::analyze(), SoftLeptonTagPlotter::analyzeTag(), BaseTagInfoPlotter::analyzeTag(), IPTagPlotter< Container, Base >::analyzeTag(), TrackCountingTagPlotter::analyzeTag(), TrackProbabilityTagPlotter::analyzeTag(), TaggingVariablePlotter::analyzeTag(), JetTagPlotter::analyzeTag(), RPCBxTest::beginRun(), DTSegment4DQuality::beginRun(), DTRecHitQuality::beginRun(), DAClusterizerInZT::beta0(), DAClusterizerInZ::beta0(), DAClusterizerInZ_vect::beta0(), HGCalGeometryLoader::build(), FWVertexProxyBuilder::build(), CSCEventData::calcALCTcrc(), L1RCTElectronIsolationCard::calcElectronCandidates(), PhysicsTools::LeastSquares::calculate(), FastCircleFit::calculate(), ClusterShapeAlgo::Calculate_Covariances(), PrimaryVertexAssignment::chargedHadronVertex(), PFPileUpAlgo::chargedHadronVertex(), PFIsolationEstimator::chargedHadronVertex(), PFPhotonIsolationCalculator::chargedHadronVertex(), JetCharge::chargeFromRef(), JetCharge::chargeFromValIterator(), CSCDCCExaminer::check(), AdaptiveVertexReconstructor::cleanUpVertices(), RPCEventSummary::clientOperation(), AdaptiveVertexReconstructor::clone(), FastLineRecognition::Cluster::Cluster(), CmsShowMain::CmsShowMain(), EcalDccWeightBuilder::computeAllWeights(), UrbanMscModel93::ComputeCrossSectionPerAtom(), GaussianSumUtilities1D::computeMode(), HFCherenkov::computeNPE(), PFClusterShapeAlgo::covariances(), EcalClusterToolsT< noZS >::covariances(), TtFullLepKinSolver::cubic(), EcalSelectiveReadoutValidation::dccZsFIR(), ESDataFormatterV1_1::DigiToRaw(), ESDataFormatterV4::DigiToRaw(), npstat::HistoND< Numeric, Axis >::dispatch(), FWGUISubviewArea::dock(), RPCEfficiencySecond::dqmEndJob(), RPCEfficiencyShiftHisto::dqmEndJob(), DQMNet::dqmhash(), FWFramedTextTableCellRenderer::draw(), FWTextTableCellRenderer::draw(), FWColorRow::DrawHighlight(), l1t::EndCapParamsHelper::EndCapParamsHelper(), MuonTrackValidator::endRun(), AbsPlan1RechitCombiner::energyWeightedAverage(), ESRecHitAnalyticAlgo::EvalAmplitude(), ESRecHitSimAlgo::evalAmplitude(), EcalTBEventHeader::eventType(), HFShowerLibrary::extrapolate(), MonitorElement::Fill(), npstat::HistoND< Numeric, Axis >::fill(), npstat::HistoND< Numeric, Axis >::fillC(), JetMETHLTOfflineSource::fillMEforMonTriggerSummary(), npstat::HistoND< Numeric, Axis >::fillPreservingCentroid(), QcdUeDQM::fillProfile(), QcdUeDQM::fillUE_with_ChargedJets(), QcdUeDQM::fillUE_with_MaxpTtrack(), CSCDigiValidator::filter(), CSCHitFromStripOnly::findHitOnStripPosition(), FFTJetPFPileupCleaner::findSomeVertexWFakes(), FKDPoint< TYPE, numberOfDimensions >::FKDPoint(), l1t::ForestHelper::ForestHelper(), FsmwClusterizer1DNameSpace::fsmw(), FWFFHelper::FWFFHelper(), FWTGLViewer::GenerateFbo(), MultiTrackSelector::getBestVertex(), FWTabularWidget::GetDefaultSize(), HFShower::getHits(), npstat::UniformAxis::getInterval(), npstat::GridAxis::getInterval(), LMFDat::getKeyList(), HGCalTriggerGeometryHexImp2::getNeighborsFromTriggerCell(), popcon::EcalTPGWeightIdMapHandler::getNewObjects(), FastLineRecognition::getOneLine(), FastLineRecognition::getPatterns(), HcalSiPMnonlinearity::getPixelsFired(), l1t::GlobalParamsHelper::GlobalParamsHelper(), GlobalTrackerMuonAlignment::gradientGlobal(), graph_tree_output(), TtGenEvent::hadronicDecayQuark(), CmsAnnotation::Handle(), FWGUIEventFilter::HandleKey(), FWEveViewManager::highlightAdded(), TtFullHadHypothesis::hypo(), popcon::EcalSRPHandler::importDccConfigFile(), EcalSRCondTools::importParameterSet(), InduceChargeFP420::InduceChargeFP420(), l1t::ClusterShapes::Init(), edm::StreamSchedule::initializeEarlyDelete(), HFShowerLibrary::interpolate(), npstat::ArrayND< Numeric, StackLen, StackDim >::interpolate1(), reco::Vertex::isFake(), heppy::IsolationComputer::isoSumNeutralsWeighted(), GenericMinL3Algorithm::iterate(), CSCLayerGeometry::lengthOfWireGroup(), npstat::UniformAxis::linearInterval(), npstat::GridAxis::linearInterval(), PhysicsTools::LeastSquares::load(), CSCLayerGeometry::localCenterOfWireGroup(), EcalClusterToolsT< noZS >::localCovariances(), HFClusterAlgo::makeCluster(), FWTGLViewer::MakeFboScale(), MuScleFitUtils::massProb(), FWHistSliceSelector::matchCell(), RPCClusterSizeTest::myBooker(), RPCNoisyStripTest::myBooker(), RPCOccupancyTest::myBooker(), RPCChamberQuality::myBooker(), TracksClusteringFromDisplacedSeed::nearTracks(), CSCRecoConditions::noiseMatrix(), 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