#include <test/EmbeddingLHEProducer/plugins/EmbeddingLHEProducer.cc>

Inheritance diagram for EmbeddingLHEProducer:

Public Member Functions
	EmbeddingLHEProducer (const edm::ParameterSet &)

	~EmbeddingLHEProducer () override

Public Member Functions inherited from edm::one::EDProducer< edm::BeginRunProducer, edm::EndRunProducer >
	EDProducer ()=default

SerialTaskQueue *	globalLuminosityBlocksQueue () final

SerialTaskQueue *	globalRunsQueue () final

bool	hasAbilityToProduceInLumis () const final

bool	hasAbilityToProduceInRuns () const final

bool	wantsGlobalLuminosityBlocks () const final

bool	wantsGlobalRuns () const final

Public Member Functions inherited from edm::one::EDProducerBase
	EDProducerBase ()

ModuleDescription const &	moduleDescription () const

bool	wantsStreamLuminosityBlocks () const

bool	wantsStreamRuns () const

	~EDProducerBase () override

Public Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

std::vector< edm::ProductResolverIndex > const &	indiciesForPutProducts (BranchType iBranchType) const

	ProducerBase ()

std::vector< edm::ProductResolverIndex > const &	putTokenIndexToProductResolverIndex () const

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...

void	resolvePutIndicies (BranchType iBranchType, ModuleToResolverIndicies const &iIndicies, std::string const &moduleLabel)

	~ProducerBase () noexcept(false) override

Public Member Functions inherited from edm::EDConsumerBase
std::vector< ConsumesInfo >	consumesInfo () const

void	convertCurrentProcessAlias (std::string const &processName)
	Convert "@currentProcess" in InputTag process names to the actual current process name. More...

	EDConsumerBase ()

	EDConsumerBase (EDConsumerBase const &)=delete

	EDConsumerBase (EDConsumerBase &&)=default

ProductResolverIndexAndSkipBit	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

void	itemsToGet (BranchType, std::vector< ProductResolverIndexAndSkipBit > &) const

std::vector< ProductResolverIndexAndSkipBit > const &	itemsToGetFrom (BranchType iType) const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	modulesWhoseProductsAreConsumed (std::vector< ModuleDescription const * > &modules, ProductRegistry const &preg, std::map< std::string, ModuleDescription const * > const &labelsToDesc, std::string const &processName) const

EDConsumerBase const &	operator= (EDConsumerBase const &)=delete

EDConsumerBase &	operator= (EDConsumerBase &&)=default

bool	registeredToConsume (ProductResolverIndex, bool, BranchType) const

bool	registeredToConsumeMany (TypeID const &, BranchType) const

ProductResolverIndexAndSkipBit	uncheckedIndexFrom (EDGetToken) const

void	updateLookup (BranchType iBranchType, ProductResolverIndexHelper const &, bool iPrefetchMayGet)

virtual	~EDConsumerBase () noexcept(false)

Static Public Member Functions
static void	fillDescriptions (edm::ConfigurationDescriptions &descriptions)

Static Public Member Functions inherited from edm::one::EDProducerBase
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Private Member Functions
void	assign_4vector (TLorentzVector &Lepton, const pat::Muon *muon, std::string FSRmode)

void	beginJob () override

void	beginRunProduce (edm::Run &run, edm::EventSetup const &es) override

void	endJob () override

void	endRunProduce (edm::Run &, edm::EventSetup const &) override

void	fill_lhe_from_mumu (TLorentzVector &positiveLepton, TLorentzVector &negativeLepton, lhef::HEPEUP &outlhe, CLHEP::HepRandomEngine *engine)

void	fill_lhe_with_particle (lhef::HEPEUP &outlhe, TLorentzVector &particle, int pdgid, double spin, double ctau)

const reco::Candidate *	find_original_muon (const reco::Candidate *muon)

LHERunInfoProduct::Header	give_slha ()

void	mirror (TLorentzVector &positiveLepton, TLorentzVector &negativeLepton)

void	produce (edm::Event &, const edm::EventSetup &) override

void	rotate180 (TLorentzVector &positiveLepton, TLorentzVector &negativeLepton)

void	transform_mumu_to_tautau (TLorentzVector &positiveLepton, TLorentzVector &negativeLepton)

Private Attributes
const double	elMass_ = 0.00051

const int	embeddingParticles [3] {11,13,15}

std::ofstream	file

bool	mirror_

edm::EDGetTokenT< edm::View< pat::Muon > >	muonsCollection_

int	particleToEmbed_

bool	rotate180_

std::string	studyFSRmode_

const double	tauMass_ = 1.77682

edm::EDGetTokenT< reco::VertexCollection >	vertexCollection_

bool	write_lheout

Additional Inherited Members
Public Types inherited from edm::one::EDProducerBase
typedef EDProducerBase	ModuleType

Public Types inherited from edm::ProducerBase
using	ModuleToResolverIndicies = std::unordered_multimap< std::string, std::tuple< edm::TypeID const , const char , edm::ProductResolverIndex >>

typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Public Types inherited from edm::EDConsumerBase
typedef ProductLabels	Labels

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes ()

template<typename ESProduct , typename ESRecord , Transition Tr = Transition::Event>
auto	esConsumes (ESInputTag const &tag)

template<typename ESProduct , Transition Tr = Transition::Event>
auto	esConsumes (eventsetup::EventSetupRecordKey const &, ESInputTag const &tag)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Detailed Description

Description: [one line class summary]

Implementation: [Notes on implementation]

Definition at line 73 of file EmbeddingLHEProducer.cc.

Constructor & Destructor Documentation

EmbeddingLHEProducer::EmbeddingLHEProducer ( const edm::ParameterSet & iConfig )

explicit

Definition at line 120 of file EmbeddingLHEProducer.cc.

References begin, end, Exception, FrontierConditions_GlobalTag_cff::file, spr::find(), edm::ParameterSet::getParameter(), edm::ParameterSet::getUntrackedParameter(), edm::Service< T >::isAvailable(), MillePedeFileConverter_cfg::out, AlCaHLTBitMon_QueryRunRegistry::string, and estimatePileup_makeJSON::trunc.

 {
    //register your products
    produces<LHEEventProduct>();
    produces<LHERunInfoProduct, edm::Transition::BeginRun>();
    produces<math::XYZTLorentzVectorD>("vertexPosition");
 
    muonsCollection_ = consumes<edm::View<pat::Muon>>(iConfig.getParameter<edm::InputTag>("src"));
    vertexCollection_ = consumes<reco::VertexCollection>(iConfig.getParameter<edm::InputTag>("vertices"));
    particleToEmbed_ = iConfig.getParameter<int>("particleToEmbed");
    mirror_ = iConfig.getParameter<bool>("mirror");
    rotate180_ = iConfig.getParameter<bool>("rotate180");
    studyFSRmode_ = iConfig.getUntrackedParameter<std::string>("studyFSRmode","");
 
    write_lheout=false;
    std::string lhe_ouputfile = iConfig.getUntrackedParameter<std::string>("lhe_outputfilename","");
    if (lhe_ouputfile !=""){
      write_lheout=true;
      file.open(lhe_ouputfile, std::fstream::out | std::fstream::trunc);
    }
 
    //check if particle can be embedded
     if (std::find(std::begin(embeddingParticles), std::end(embeddingParticles),
       particleToEmbed_) == std::end(embeddingParticles)) {
       throw cms::Exception("Configuration")
         << "The given particle to embed is not in the list of allowed particles.";
     }
 
    edm::Service<edm::RandomNumberGenerator> rng;
    if ( ! rng.isAvailable()) {
      throw cms::Exception("Configuration")
        << "The EmbeddingLHEProducer requires the RandomNumberGeneratorService\n"
           "which is not present in the configuration file. \n"
           "You must add the service\n"
           "in the configuration file or remove the modules that require it.";
     }
 
 
 }

EmbeddingLHEProducer::~EmbeddingLHEProducer ( )

override

Definition at line 161 of file EmbeddingLHEProducer.cc.

162 {

163 }

Member Function Documentation

void EmbeddingLHEProducer::assign_4vector	(	TLorentzVector &	Lepton,
		const pat::Muon *	muon,
		std::string	FSRmode
	)

private

Definition at line 404 of file EmbeddingLHEProducer.cc.

References pat::PATObject< ObjectType >::genParticle(), reco::Candidate::p4(), and reco::LeafCandidate::p4().

 {
     if("afterFSR" == FSRmode && muon->genParticle() != nullptr)
     {
         const reco::GenParticle* afterFSRMuon = muon->genParticle();
         Lepton.SetPxPyPzE(afterFSRMuon->p4().px(),afterFSRMuon->p4().py(),afterFSRMuon->p4().pz(), afterFSRMuon->p4().e());
     }
     else if ("beforeFSR" == FSRmode && muon->genParticle() != nullptr)
     {
         const reco::Candidate* beforeFSRMuon = find_original_muon(muon->genParticle());
         Lepton.SetPxPyPzE(beforeFSRMuon->p4().px(),beforeFSRMuon->p4().py(),beforeFSRMuon->p4().pz(), beforeFSRMuon->p4().e());
     }
     else
     {
         Lepton.SetPxPyPzE(muon->p4().px(),muon->p4().py(),muon->p4().pz(), muon->p4().e());
     }
     return;
 }

void EmbeddingLHEProducer::beginJob ( void )

overrideprivatevirtual

Reimplemented from edm::one::EDProducerBase.

Definition at line 230 of file EmbeddingLHEProducer.cc.

231 {

232 }

void EmbeddingLHEProducer::beginRunProduce	(	edm::Run &	run,
		edm::EventSetup const &	es
	)

overrideprivate

Definition at line 242 of file EmbeddingLHEProducer.cc.

References popcon2dropbox::copy(), FrontierConditions_GlobalTag_cff::file, lhef::HEPRUP::IDWTUP, lhef::HEPRUP::LPRUP, eostools::move(), edm::Run::put(), lhef::HEPRUP::resize(), lhef::HEPRUP::XERRUP, lhef::HEPRUP::XMAXUP, and lhef::HEPRUP::XSECUP.

 {
     // fill HEPRUP common block and store in edm::Run
     lhef::HEPRUP heprup;
 
     // set number of processes: 1 for Z to tau tau
     heprup.resize(1);
 
     //Process independent information
 
     //beam particles ID (two protons)
     //heprup.IDBMUP.first = 2212;
     //heprup.IDBMUP.second = 2212;
 
     //beam particles energies (both 6.5 GeV)
     //heprup.EBMUP.first = 6500.;
     //heprup.EBMUP.second = 6500.;
 
     //take default pdf group for both beamparticles
     //heprup.PDFGUP.first = -1;
     //heprup.PDFGUP.second = -1;
 
     //take certan pdf set ID (same as in officially produced DYJets LHE files)
     //heprup.PDFSUP.first = -1;
     //heprup.PDFSUP.second = -1;
 
     //master switch for event weight iterpretation (same as in officially produced DYJets LHE files)
     heprup.IDWTUP = 3;
 
     //Information for first process (Z to tau tau), for now only placeholder:
     heprup.XSECUP[0] = 1.;
     heprup.XERRUP[0] = 0;
     heprup.XMAXUP[0] = 1;
     heprup.LPRUP[0]= 1;
 
 
     std::unique_ptr<LHERunInfoProduct> runInfo(new LHERunInfoProduct(heprup));
     runInfo->addHeader(give_slha());
 
 
     if (write_lheout)std::copy(runInfo->begin(), runInfo->end(),std::ostream_iterator<std::string>(file));
     run.put(std::move(runInfo));
 
 
 }

void EmbeddingLHEProducer::endJob ( void )

overrideprivatevirtual

Reimplemented from edm::one::EDProducerBase.

Definition at line 236 of file EmbeddingLHEProducer.cc.

236 {

237 }

void EmbeddingLHEProducer::endRunProduce	(	edm::Run &	run,
		edm::EventSetup const &	es
	)

overrideprivate

Definition at line 290 of file EmbeddingLHEProducer.cc.

References LHERunInfoProduct::endOfFile(), and FrontierConditions_GlobalTag_cff::file.

 {
     if (write_lheout) {
       file << LHERunInfoProduct::endOfFile();
       file.close();
     }
 }

void EmbeddingLHEProducer::fill_lhe_from_mumu	(	TLorentzVector &	positiveLepton,
		TLorentzVector &	negativeLepton,
		lhef::HEPEUP &	outlhe,
		CLHEP::HepRandomEngine *	engine
	)

private

Definition at line 299 of file EmbeddingLHEProducer.cc.

References DOFs::Z.

 {
 
     TLorentzVector Z = positiveLepton + negativeLepton;
     int leptonPDGID = particleToEmbed_;
 
    // double tau_ctau = 0.00871100; //cm
     double tau_ctau0 = 8.71100e-02; // mm (for Pythia)
     double tau_ctau_p = tau_ctau0 * CLHEP::RandExponential::shoot(engine); // return -std::log(HepRandom::getTheEngine()->flat());
     // replaces tau = process[iNow].tau0() * rndmPtr->exp(); from pythia8212/src/ProcessContainer.cc which is not initialized for ProcessLevel:all = off mode (no beam particle mode)
     double tau_ctau_n = tau_ctau0 * CLHEP::RandExponential::shoot(engine);
     //std::cout<<"tau_ctau P: "<<tau_ctau_p<<" tau_ctau N:  "<<tau_ctau_n<<std::endl;
 
     fill_lhe_with_particle(outlhe, Z,23,9.0, 0);
     fill_lhe_with_particle(outlhe, positiveLepton,-leptonPDGID,1.0, tau_ctau_p);
     fill_lhe_with_particle(outlhe, negativeLepton,leptonPDGID,-1.0, tau_ctau_n);
 
     return;
 }

void EmbeddingLHEProducer::fill_lhe_with_particle	(	lhef::HEPEUP &	outlhe,
		TLorentzVector &	particle,
		int	pdgid,
		double	spin,
		double	ctau
	)

private

Definition at line 319 of file EmbeddingLHEProducer.cc.

References funct::abs(), begin, end, spr::find(), lhef::HEPEUP::ICOLUP, lhef::HEPEUP::IDUP, lhef::HEPEUP::ISTUP, lhef::HEPEUP::MOTHUP, lhef::HEPEUP::NUP, BPhysicsValidation_cfi::pdgid, lhef::HEPEUP::PUP, lhef::HEPEUP::resize(), spin(), lhef::HEPEUP::SPINUP, and lhef::HEPEUP::VTIMUP.

 {
     // Pay attention to different index conventions:
     // 'particleindex' follows usual C++ index conventions starting at 0 for a list.
     // 'motherindex' follows the LHE index conventions: 0 is for 'not defined', so the listing starts at 1.
     // That means: LHE index 1 == C++ index 0.
     int particleindex = outlhe.NUP;
     outlhe.resize(outlhe.NUP+1);
 
     outlhe.PUP[particleindex][0] = particle.Px();
     outlhe.PUP[particleindex][1] = particle.Py();
     outlhe.PUP[particleindex][2] = particle.Pz();
     outlhe.PUP[particleindex][3] = particle.E();
     outlhe.PUP[particleindex][4] = particle.M();
     outlhe.IDUP[particleindex] = pdgid;
     outlhe.SPINUP[particleindex] = spin;
     outlhe.VTIMUP[particleindex] = ctau;
 
     outlhe.ICOLUP[particleindex].first = 0;
     outlhe.ICOLUP[particleindex].second = 0;
 
     if (std::abs(pdgid) == 23){
       outlhe.MOTHUP[particleindex].first = 0; // No Mother
       outlhe.MOTHUP[particleindex].second = 0;
       outlhe.ISTUP[particleindex] = 2; // status
 
     }
 
     if (std::find(std::begin(embeddingParticles), std::end(embeddingParticles),
      std::abs(pdgid)) != std::end(embeddingParticles)) {
       outlhe.MOTHUP[particleindex].first = 1;  // Mother is the Z (first partile)
       outlhe.MOTHUP[particleindex].second = 1; // Mother is the Z (first partile)
 
       outlhe.ISTUP[particleindex] = 1;//status
     }
 
     return;
 }

void EmbeddingLHEProducer::fillDescriptions ( edm::ConfigurationDescriptions & descriptions )

static

Definition at line 582 of file EmbeddingLHEProducer.cc.

References edm::ConfigurationDescriptions::addDefault(), DEFINE_FWK_MODULE, and edm::ParameterSetDescription::setUnknown().

                                                                                  {
   //The following says we do not know what parameters are allowed so do no validation
   // Please change this to state exactly what you do use, even if it is no parameters
   edm::ParameterSetDescription desc;
   desc.setUnknown();
   descriptions.addDefault(desc);
 }

const reco::Candidate * EmbeddingLHEProducer::find_original_muon ( const reco::Candidate * muon )

private

Definition at line 423 of file EmbeddingLHEProducer.cc.

References reco::Candidate::mother(), metsig::muon, and reco::Candidate::pdgId().

 {
     if(muon->mother(0) == nullptr) return muon;
     if(muon->pdgId() == muon->mother(0)->pdgId()) return find_original_muon(muon->mother(0));
     else return muon;
 }

LHERunInfoProduct::Header EmbeddingLHEProducer::give_slha ( )

private

Definition at line 485 of file EmbeddingLHEProducer.cc.

References LHERunInfoProduct::Header::addLine().

                                                        {
   LHERunInfoProduct::Header slhah("slha");
 
   slhah.addLine("######################################################################\n");
   slhah.addLine("## PARAM_CARD AUTOMATICALY GENERATED BY MG5 FOLLOWING UFO MODEL   ####\n");
   slhah.addLine("######################################################################\n");
   slhah.addLine("##                                                                  ##\n");
   slhah.addLine("##  Width set on Auto will be computed following the information    ##\n");
   slhah.addLine("##        present in the decay.py files of the model.               ##\n");
   slhah.addLine("##        See  arXiv:1402.1178 for more details.                    ##\n");
   slhah.addLine("##                                                                  ##\n");
   slhah.addLine("######################################################################\n");
   slhah.addLine("\n");
   slhah.addLine("###################################\n");
   slhah.addLine("## INFORMATION FOR MASS\n");
   slhah.addLine("###################################\n");
   slhah.addLine("Block mass \n");
   slhah.addLine("    6 1.730000e+02 # MT \n");
   slhah.addLine("   15 1.777000e+00 # MTA \n");
   slhah.addLine("   23 9.118800e+01 # MZ \n");
   slhah.addLine("   25 1.250000e+02 # MH \n");
   slhah.addLine("## Dependent parameters, given by model restrictions.\n");
   slhah.addLine("## Those values should be edited following the \n");
   slhah.addLine("## analytical expression. MG5 ignores those values \n");
   slhah.addLine("## but they are important for interfacing the output of MG5\n");
   slhah.addLine("## to external program such as Pythia.\n");
   slhah.addLine("  1 0.000000 # d : 0.0 \n");
   slhah.addLine("  2 0.000000 # u : 0.0 \n");
   slhah.addLine("  3 0.000000 # s : 0.0 \n");
   slhah.addLine("  4 0.000000 # c : 0.0 \n");
   slhah.addLine("  5 0.000000 # b : 0.0 \n");
   slhah.addLine("  11 0.000000 # e- : 0.0 \n");
   slhah.addLine("  12 0.000000 # ve : 0.0 \n");
   slhah.addLine("  13 0.000000 # mu- : 0.0 \n");
   slhah.addLine("  14 0.000000 # vm : 0.0 \n");
   slhah.addLine("  16 0.000000 # vt : 0.0 \n");
   slhah.addLine("  21 0.000000 # g : 0.0 \n");
   slhah.addLine("  22 0.000000 # a : 0.0 \n");
   slhah.addLine("  24 80.419002 # w+ : cmath.sqrt(MZ__exp__2/2. + cmath.sqrt(MZ__exp__4/4. - (aEW*cmath.pi*MZ__exp__2)/(Gf*sqrt__2))) \n");
   slhah.addLine("\n");
   slhah.addLine("###################################\n");
   slhah.addLine("## INFORMATION FOR SMINPUTS\n");
   slhah.addLine("###################################\n");
   slhah.addLine("Block sminputs \n");
   slhah.addLine("    1 1.325070e+02 # aEWM1 \n");
   slhah.addLine("    2 1.166390e-05 # Gf \n");
   slhah.addLine("    3 1.180000e-01 # aS \n");
   slhah.addLine("\n");
   slhah.addLine("###################################\n");
   slhah.addLine("## INFORMATION FOR WOLFENSTEIN\n");
   slhah.addLine("###################################\n");
   slhah.addLine("Block wolfenstein \n");
   slhah.addLine("    1 2.253000e-01 # lamWS \n");
   slhah.addLine("    2 8.080000e-01 # AWS \n");
   slhah.addLine("    3 1.320000e-01 # rhoWS \n");
   slhah.addLine("    4 3.410000e-01 # etaWS \n");
   slhah.addLine("\n");
   slhah.addLine("###################################\n");
   slhah.addLine("## INFORMATION FOR YUKAWA\n");
   slhah.addLine("###################################\n");
   slhah.addLine("Block yukawa \n");
   slhah.addLine("    6 1.730000e+02 # ymt \n");
   slhah.addLine("   15 1.777000e+00 # ymtau \n");
   slhah.addLine("\n");
   slhah.addLine("###################################\n");
   slhah.addLine("## INFORMATION FOR DECAY\n");
   slhah.addLine("###################################\n");
   slhah.addLine("DECAY   6 1.491500e+00 # WT \n");
   slhah.addLine("DECAY  15 2.270000e-12 # WTau \n");
   slhah.addLine("DECAY  23 2.441404e+00 # WZ \n");
   slhah.addLine("DECAY  24 2.047600e+00 # WW \n");
   slhah.addLine("DECAY  25 6.382339e-03 # WH \n");
   slhah.addLine("## Dependent parameters, given by model restrictions.\n");
   slhah.addLine("## Those values should be edited following the \n");
   slhah.addLine("## analytical expression. MG5 ignores those values \n");
   slhah.addLine("## but they are important for interfacing the output of MG5\n");
   slhah.addLine("## to external program such as Pythia.\n");
   slhah.addLine("DECAY  1 0.000000 # d : 0.0 \n");
   slhah.addLine("DECAY  2 0.000000 # u : 0.0 \n");
   slhah.addLine("DECAY  3 0.000000 # s : 0.0 \n");
   slhah.addLine("DECAY  4 0.000000 # c : 0.0 \n");
   slhah.addLine("DECAY  5 0.000000 # b : 0.0 \n");
   slhah.addLine("DECAY  11 0.000000 # e- : 0.0 \n");
   slhah.addLine("DECAY  12 0.000000 # ve : 0.0 \n");
   slhah.addLine("DECAY  13 0.000000 # mu- : 0.0 \n");
   slhah.addLine("DECAY  14 0.000000 # vm : 0.0 \n");
   slhah.addLine("DECAY  16 0.000000 # vt : 0.0 \n");
   slhah.addLine("DECAY  21 0.000000 # g : 0.0 \n");
   slhah.addLine("DECAY  22 0.000000 # a : 0.0\n");
 
   return slhah;
 }

void EmbeddingLHEProducer::mirror	(	TLorentzVector &	positiveLepton,
		TLorentzVector &	negativeLepton
	)

private

Definition at line 458 of file EmbeddingLHEProducer.cc.

References DOFs::Z.

 {
     if(!mirror_) return;
     edm::LogInfo("TauEmbedding")<< "Applying mirroring" ;
     TLorentzVector Z = positiveLepton + negativeLepton;
 
     edm::LogInfo("TauEmbedding") << "MuMinus before. Pt: " << negativeLepton.Pt() << " Eta: " << negativeLepton.Eta() << " Phi: " << negativeLepton.Phi() << " Mass: " << negativeLepton.M() ;
 
     TVector3 Z3 = Z.Vect();
     TVector3 positiveLepton3 = positiveLepton.Vect();
     TVector3 negativeLepton3 = negativeLepton.Vect();
 
     TVector3 beam(0.,0.,1.);
     TVector3 perpToZandBeam = Z3.Cross(beam).Unit();
 
     positiveLepton3 -= 2*positiveLepton3.Dot(perpToZandBeam)*perpToZandBeam;
     negativeLepton3 -= 2*negativeLepton3.Dot(perpToZandBeam)*perpToZandBeam;
 
     positiveLepton.SetVect(positiveLepton3);
     negativeLepton.SetVect(negativeLepton3);
 
     edm::LogInfo("TauEmbedding") << "MuMinus after. Pt: " << negativeLepton.Pt() << " Eta: " << negativeLepton.Eta() << " Phi: " << negativeLepton.Phi() << " Mass: " << negativeLepton.M() ;
 
     return;
 }

void EmbeddingLHEProducer::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

overrideprivate

Definition at line 172 of file EmbeddingLHEProducer.cc.

References lhef::HEPEUP::AQCDUP, lhef::HEPEUP::AQEDUP, edm::View< T >::begin(), popcon2dropbox::copy(), edm::View< T >::end(), FrontierConditions_GlobalTag_cff::file, edm::Event::getByToken(), edm::RandomNumberGenerator::getEngine(), lhef::HEPEUP::IDPRUP, EmbeddingLHEProducer_cfi::mirror, eostools::move(), metsig::muon, edm::Event::put(), EmbeddingLHEProducer_cfi::rotate180, lhef::HEPEUP::SCALUP, edm::Event::streamID(), and lhef::HEPEUP::XWGTUP.

 {
     using namespace edm;
 
     edm::Service<edm::RandomNumberGenerator> rng;
     CLHEP::HepRandomEngine* engine = &rng->getEngine(iEvent.streamID());
 
 
     edm::Handle< edm::View<pat::Muon> > muonHandle;
     iEvent.getByToken(muonsCollection_, muonHandle);
     edm::View<pat::Muon> coll_muons = *muonHandle;
 
     Handle<std::vector<reco::Vertex>> coll_vertices;
     iEvent.getByToken(vertexCollection_ , coll_vertices);
 
     TLorentzVector positiveLepton, negativeLepton;
     bool mu_plus_found = false;
     bool mu_minus_found = false;
     lhef::HEPEUP hepeup;
     hepeup.IDPRUP = 0;
     hepeup.XWGTUP = 1;
     hepeup.SCALUP = -1;
     hepeup.AQEDUP = -1;
     hepeup.AQCDUP = -1;
     // Assuming Pt-Order
     for (edm::View<pat::Muon>::const_iterator muon=  coll_muons.begin(); muon!= coll_muons.end();  ++muon)
     {
       if (muon->charge() == 1 && !mu_plus_found)
       {
         assign_4vector(positiveLepton, &(*muon), studyFSRmode_);
         mu_plus_found = true;
       }
       else if (muon->charge() == -1 && !mu_minus_found)
       {
         assign_4vector(negativeLepton, &(*muon), studyFSRmode_);
         mu_minus_found = true;
       }
       else if (mu_minus_found && mu_plus_found) break;
     }
     mirror(positiveLepton,negativeLepton); // if no mirror, function does nothing.
     rotate180(positiveLepton,negativeLepton); // if no rotate180, function does nothing
     transform_mumu_to_tautau(positiveLepton,negativeLepton); // if MuonEmbedding, function does nothing.
     fill_lhe_from_mumu(positiveLepton,negativeLepton,hepeup,engine);
 
     double originalXWGTUP_ = 1.;
     std::unique_ptr<LHEEventProduct> product( new LHEEventProduct(hepeup,originalXWGTUP_) );
 
     if (write_lheout) std::copy(product->begin(), product->end(), std::ostream_iterator<std::string>(file));
 
     iEvent.put(std::move(product));
     // Saving vertex position
     std::unique_ptr<math::XYZTLorentzVectorD> vertex_position (new math::XYZTLorentzVectorD(coll_vertices->at(0).x(),coll_vertices->at(0).y(),coll_vertices->at(0).z(),0.0));
     iEvent.put(std::move(vertex_position), "vertexPosition");
 
 }

void EmbeddingLHEProducer::rotate180	(	TLorentzVector &	positiveLepton,
		TLorentzVector &	negativeLepton
	)

private

Definition at line 430 of file EmbeddingLHEProducer.cc.

References DOFs::Z.

 {
     if (!rotate180_) return;
     edm::LogInfo("TauEmbedding") << "Applying 180<C2><B0> rotation" ;
     // By construction, the 3-momenta of mu-, mu+ and Z are in one plane.
     // That means, one vector for perpendicular projection can be used for both leptons.
     TLorentzVector Z = positiveLepton + negativeLepton;
 
     edm::LogInfo("TauEmbedding") << "MuMinus before. Pt: " << negativeLepton.Pt() << " Eta: " << negativeLepton.Eta() << " Phi: " << negativeLepton.Phi() << " Mass: " << negativeLepton.M();
 
     TVector3 Z3 = Z.Vect();
     TVector3 positiveLepton3 = positiveLepton.Vect();
     TVector3 negativeLepton3 = negativeLepton.Vect();
 
     TVector3 p3_perp = positiveLepton3 - positiveLepton3.Dot(Z3)/Z3.Dot(Z3)*Z3;
     p3_perp = p3_perp.Unit();
 
     positiveLepton3 -= 2*positiveLepton3.Dot(p3_perp)*p3_perp;
     negativeLepton3 -= 2*negativeLepton3.Dot(p3_perp)*p3_perp;
 
     positiveLepton.SetVect(positiveLepton3);
     negativeLepton.SetVect(negativeLepton3);
 
     edm::LogInfo("TauEmbedding") << "MuMinus after. Pt: " << negativeLepton.Pt() << " Eta: " << negativeLepton.Eta() << " Phi: " << negativeLepton.Phi() << " Mass: " << negativeLepton.M();
 
     return;
 }

void EmbeddingLHEProducer::transform_mumu_to_tautau	(	TLorentzVector &	positiveLepton,
		TLorentzVector &	negativeLepton
	)

private

Definition at line 361 of file EmbeddingLHEProducer.cc.

References Scenarios_cff::scale, mathSSE::sqrt(), and DOFs::Z.

 {
     // No corrections applied for muon embedding
     double lep_mass;
     if (particleToEmbed_ == 11) {
       lep_mass = elMass_;
     } else if (particleToEmbed_ == 15) {
       lep_mass = tauMass_;
     } else {
       return;
     }
 
     TLorentzVector Z = positiveLepton + negativeLepton;
 
     TVector3 boost_from_Z_to_LAB = Z.BoostVector();
     TVector3 boost_from_LAB_to_Z = -Z.BoostVector();
 
     // Boosting the two leptons to Z restframe, then both are back to back. This means, same 3-momentum squared
     positiveLepton.Boost(boost_from_LAB_to_Z);
     negativeLepton.Boost(boost_from_LAB_to_Z);
 
     // Energy of tau = 0.5*Z-mass
     double lep_mass_squared = lep_mass*lep_mass;
     double lep_energy_squared = 0.25*Z.M2();
     double lep_3momentum_squared = lep_energy_squared - lep_mass_squared;
     if (lep_3momentum_squared < 0)
     {
         edm::LogWarning("TauEmbedding") << "3-Momentum squared is negative";
         return;
     }
 
     //Computing scale, applying it on the 3-momenta and building new 4 momenta of the taus
     double scale = std::sqrt(lep_3momentum_squared/positiveLepton.Vect().Mag2());
     positiveLepton.SetPxPyPzE(scale*positiveLepton.Px(),scale*positiveLepton.Py(),scale*positiveLepton.Pz(),std::sqrt(lep_energy_squared));
     negativeLepton.SetPxPyPzE(scale*negativeLepton.Px(),scale*negativeLepton.Py(),scale*negativeLepton.Pz(),std::sqrt(lep_energy_squared));
 
     //Boosting the new taus back to LAB frame
     positiveLepton.Boost(boost_from_Z_to_LAB);
     negativeLepton.Boost(boost_from_Z_to_LAB);
 
     return;
 }

Member Data Documentation

const double EmbeddingLHEProducer::elMass_ = 0.00051

private

Definition at line 105 of file EmbeddingLHEProducer.cc.

const int EmbeddingLHEProducer::embeddingParticles[3] {11,13,15}

private

Definition at line 106 of file EmbeddingLHEProducer.cc.

std::ofstream EmbeddingLHEProducer::file

private

Definition at line 108 of file EmbeddingLHEProducer.cc.

bool EmbeddingLHEProducer::mirror_

private

Definition at line 103 of file EmbeddingLHEProducer.cc.

edm::EDGetTokenT<edm::View<pat::Muon> > EmbeddingLHEProducer::muonsCollection_

private

Definition at line 100 of file EmbeddingLHEProducer.cc.

int EmbeddingLHEProducer::particleToEmbed_

private

Definition at line 102 of file EmbeddingLHEProducer.cc.

bool EmbeddingLHEProducer::rotate180_

private

Definition at line 103 of file EmbeddingLHEProducer.cc.

std::string EmbeddingLHEProducer::studyFSRmode_

private

Definition at line 114 of file EmbeddingLHEProducer.cc.

const double EmbeddingLHEProducer::tauMass_ = 1.77682

private

Definition at line 104 of file EmbeddingLHEProducer.cc.

edm::EDGetTokenT<reco::VertexCollection> EmbeddingLHEProducer::vertexCollection_

private

Definition at line 101 of file EmbeddingLHEProducer.cc.

bool EmbeddingLHEProducer::write_lheout

private

Definition at line 109 of file EmbeddingLHEProducer.cc.

Public Member Functions

Static Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation