tnp::TagProbePairMaker Class Reference

#include <TagProbePairMaker.h>

Public Member Functions
TagProbePairs	run (const edm::Event &iEvent) const
	fill in tghe T&P pairs for this event More...
	TagProbePairMaker (const edm::ParameterSet &iConfig, edm::ConsumesCollector &&iC)
	~TagProbePairMaker ()

Private Types
enum	Arbitration {   None, OneProbe, BestMass, Random2,   NonDuplicate, OnePair }

Private Member Functions
void	arbitrate (TagProbePairs &pairs) const
void	phiCutByEventNumber (TagProbePairs &pairs, int eventNumber) const

Private Attributes
Arbitration	arbitration_
double	arbitrationMass_
bool	phiCutForTwoLeg_
TRandom2 *	randGen_
edm::EDGetTokenT < reco::CandidateView >	srcToken_

Detailed Description

Definition at line 26 of file TagProbePairMaker.h.

Member Enumeration Documentation

enum tnp::TagProbePairMaker::Arbitration

private

Enumerator
None
OneProbe
BestMass
Random2
NonDuplicate
OnePair

Definition at line 36 of file TagProbePairMaker.h.

{ None, OneProbe, BestMass, Random2, NonDuplicate, OnePair };

Constructor & Destructor Documentation

tnp::TagProbePairMaker::TagProbePairMaker	(	const edm::ParameterSet &	iConfig,
		edm::ConsumesCollector &&	iC
	)

Definition at line 4 of file TagProbePairMaker.cc.

References arbitration_, arbitrationMass_, BestMass, Exception, edm::ParameterSet::existsAs(), edm::ParameterSet::getParameter(), NonDuplicate, None, OnePair, OneProbe, phiCutForTwoLeg_, randGen_, Random2, and AlCaHLTBitMon_QueryRunRegistry::string.

                                                                                                  :
  srcToken_(iC.consumes<reco::CandidateView>(iConfig.getParameter<edm::InputTag>("tagProbePairs"))),
  randGen_(0)
{
  std::string arbitration = iConfig.getParameter<std::string>("arbitration");
  if (arbitration == "None") {
    arbitration_ = None;
  } else if (arbitration == "OneProbe") {
    arbitration_ = OneProbe;
  } else if (arbitration == "OnePair") {
    arbitration_ = OnePair;
  } else if (arbitration == "NonDuplicate") {
    arbitration_ = NonDuplicate;
  } else if (arbitration == "BestMass") {
    arbitration_ = BestMass;
    arbitrationMass_ = iConfig.getParameter<double>("massForArbitration");
  } else if (arbitration == "Random2") {
    arbitration_ = Random2;
    randGen_ = new TRandom2(7777);
  } else throw cms::Exception("Configuration") << "TagProbePairMakerOnTheFly: the only currently "
                           << "allowed values for 'arbitration' are "
                           << "'None', 'OneProbe', 'BestMass', 'Random2'\n";

  if (iConfig.existsAs<bool>("phiCutForTwoLeg")) {
    phiCutForTwoLeg_ = iConfig.getParameter<bool>("phiCutForTwoLeg");
    //std::cout << "Set phiCutForTwoLeg_ to " << phiCutForTwoLeg_ << std::endl;
  } else {
    phiCutForTwoLeg_ = false;
    //std::cout << "Set phiCutForTwoLeg_ to default " << phiCutForTwoLeg_ << std::endl;
  }
}

tnp::TagProbePairMaker::~TagProbePairMaker ( )

inline

Definition at line 31 of file TagProbePairMaker.h.

References randGen_.

{delete randGen_;}

Member Function Documentation

void tnp::TagProbePairMaker::arbitrate ( TagProbePairs &  pairs ) const

private

Definition at line 113 of file TagProbePairMaker.cc.

References funct::abs(), alignCSCRings::e, and std::swap().

{
  size_t nclean = pairs.size();
  for (TagProbePairs::iterator it = pairs.begin(), ed = pairs.end(); it != ed; ++it) {
    if (it->tag.isNull()) continue; // skip already invalidated pairs

    bool TTpair=false;
    for (TagProbePairs::iterator it2 = pairs.begin(); it2 != ed; ++it2) {   // first check for Tag-Tag pairs
      if(it!=it2 && it->probe==it2->tag && it->tag==it2->probe){
    //std::cout << "----------> probe is tag!!!!" << std::endl;
    TTpair=true;
      }
    }
    //if(!TTpair) std::cout << "this is not TT!" << std::endl;
    bool invalidateThis = false;
    int numberOfProbes=0;
    for (TagProbePairs::iterator it2 = it + 1; it2 != ed; ++it2) {   // it+1 <= ed, otherwise we don't arrive here
      // arbitrate the case where multiple probes are matched to the same tag
      if ((arbitration_ != NonDuplicate) && (it->tag == it2->tag)) {
    if(TTpair){ // we already have found a TT pair, no need to guess
      it2->tag = reco::CandidateBaseRef(); --nclean;
      //std::cout << "remove unnecessary pair! -----------" << std::endl;
      continue;
    }

    if (arbitration_ == OneProbe) {
      // invalidate this one
      it2->tag = reco::CandidateBaseRef(); --nclean;
      // remember to invalidate also the other one (but after finishing to check for duplicates)
      invalidateThis = true;
    } else if (arbitration_ == BestMass) {
      // but the best one in the first  iterator
      if (fabs(it2->mass-arbitrationMass_) < fabs(it->mass-arbitrationMass_)) {
        std::swap(*it, *it2);
      }
      // and invalidate it2
      it2->tag = reco::CandidateBaseRef(); --nclean;
    } else if (arbitration_ == Random2) {
      numberOfProbes++;
      if (numberOfProbes>1) {
        //std::cout << "more than 2 probes!" << std::endl;
        invalidateThis=true;
        it2->tag = reco::CandidateBaseRef();
        --nclean;
      } else{
        // do a coin toss to decide if we want to swap them
        if (randGen_->Rndm()>0.5) {
          std::swap(*it, *it2);
        }
        // and invalidate it2
        it2->tag = reco::CandidateBaseRef();
        --nclean;
      }
    }
      }
      // arbitrate the case where the same probe is associated to more then one tag
      if ((arbitration_ == NonDuplicate) && (it->probe == it2->probe)) {
        // invalidate the pair in which the tag has lower pT
        if (it2->tag->pt() > it->tag->pt()) std::swap(*it, *it2);
        it2->tag = reco::CandidateBaseRef(); --nclean;
      }
      // arbitrate the OnePair case: disallow the same pair to enter the lineshape twice
      // this can't be done by reference, unfortunately, so we resort to a simple matching
      if ((arbitration_ == OnePair) &&
          std::abs(it->mass - it2->mass) < 1e-4 &&
          std::abs( it->probe->phi() - it2->tag->phi()) < 1e-5 &&
          std::abs( it->probe->eta() - it2->tag->eta()) < 1e-5 &&
          std::abs( it->probe->pt()  - it2->tag->pt() ) < 1e-5 &&
          std::abs(it2->probe->phi() -  it->tag->phi()) < 1e-5 &&
          std::abs(it2->probe->eta() -  it->tag->eta()) < 1e-5 &&
          std::abs(it2->probe->pt()  -  it->tag->pt() ) < 1e-5) {
          it2->tag = reco::CandidateBaseRef(); --nclean;
      }
    }
    if (invalidateThis) { it->tag = reco::CandidateBaseRef(); --nclean; }
  }

  if (nclean == 0) {
    pairs.clear();
  } else if (nclean < pairs.size()) {
    TagProbePairs cleaned; cleaned.reserve(nclean);
    for (TagProbePairs::iterator it = pairs.begin(), ed = pairs.end(); it != ed; ++it) {
      if (it->tag.isNonnull()) cleaned.push_back(*it);
    }
    pairs.swap(cleaned);
  }
}

void tnp::TagProbePairMaker::phiCutByEventNumber ( TagProbePairs &  pairs, int  eventNumber  ) const

private

Definition at line 71 of file TagProbePairMaker.cc.

References gather_cfg::cout.

{
  unsigned int currentNum = 0;

  size_t nclean = pairs.size();
  for (TagProbePairs::iterator it = pairs.begin(), ed = pairs.end(); it != ed; ++it) {
    if (it->tag.isNull()) continue; // skip already invalidated pairs
    if (eventNumber%2) {
      std::cout << "Odd event number " << eventNumber << ", require 0 < phi(tag) < pi... ";
      if (!(it->tag->phi() > 0. && it->tag->phi() < 3.141592654)) {
    std::cout  << "Rejecting pair number " << currentNum++ << " with tag phi " << it->tag->phi();
    nclean--;
    it->tag = reco::CandidateBaseRef(); --nclean;
      } else {
    std::cout  << "Keeping pair number " << currentNum++ << " with tag phi " << it->tag->phi();
      }
    } else {
      std::cout << "Even event number " << eventNumber << ", require -pi < phi(tag) < 0... ";
      //      if (!(it->tag->phi() > 3.141592654 && it->tag->phi() < 2*3.141592654)) {
      if (!(it->tag->phi() > -3.141592654 && it->tag->phi() < 0)) {
    std::cout  << "Rejecting pair number " << currentNum++ << " with tag phi " << it->tag->phi();
        nclean--;
        it->tag = reco::CandidateBaseRef(); --nclean;
      } else {
    std::cout  << "Keeping pair number " << currentNum++ << " with tag phi " << it->tag->phi();
      }
    }
    std::cout << std::endl;
  }

  if (nclean == 0) {
    pairs.clear();
  } else if (nclean < pairs.size()) {
    TagProbePairs cleaned; cleaned.reserve(nclean);
    for (TagProbePairs::iterator it = pairs.begin(), ed = pairs.end(); it != ed; ++it) {
      if (it->tag.isNonnull()) cleaned.push_back(*it);
    }
    pairs.swap(cleaned);
  }
}

tnp::TagProbePairs tnp::TagProbePairMaker::run

(

const edm::Event &

iEvent

)

const

fill in tghe T&P pairs for this event

Definition at line 38 of file TagProbePairMaker.cc.

References gather_cfg::cout, reco::Candidate::daughter(), edm::EventID::event(), edm::Event::getByToken(), edm::EventBase::id(), reco::Candidate::mass(), reco::Candidate::masterClone(), FSQ::None, reco::Candidate::numberOfDaughters(), and alcazmumu_cfi::src.

Referenced by TagProbeFitTreeProducer::analyze().

{
  // declare output
  tnp::TagProbePairs pairs;

  // read from event
  edm::Handle<reco::CandidateView> src;
  iEvent.getByToken(srcToken_, src);

  // convert
  for (reco::CandidateView::const_iterator it = src->begin(), ed = src->end(); it != ed; ++it) {
    const reco::Candidate & mother = *it;
    if (mother.numberOfDaughters() != 2) throw cms::Exception("CorruptData") << "Tag&Probe pair with " << mother.numberOfDaughters() << " daughters\n";
    pairs.push_back(tnp::TagProbePair(mother.daughter(0)->masterClone(), mother.daughter(1)->masterClone(),
                      src->refAt(it - src->begin()), mother.mass()));
  }

  if ((arbitration_ != None) && (pairs.size() > 1)) {
    // might need to clean up
    arbitrate(pairs);
  }

  if (phiCutForTwoLeg_ && pairs.size() > 0) {
    int eventNum = iEvent.id().event();
    std::cout << "Calling phiCutByEventNumber on eventNum=" << eventNum << std::endl;
    phiCutByEventNumber(pairs,eventNum);
  }

  // return
  return pairs;
}

Member Data Documentation

Arbitration tnp::TagProbePairMaker::arbitration_

private

Definition at line 37 of file TagProbePairMaker.h.

Referenced by TagProbePairMaker().

double tnp::TagProbePairMaker::arbitrationMass_

private

Definition at line 38 of file TagProbePairMaker.h.

Referenced by TagProbePairMaker().

bool tnp::TagProbePairMaker::phiCutForTwoLeg_

private

Definition at line 43 of file TagProbePairMaker.h.

Referenced by TagProbePairMaker().

TRandom2* tnp::TagProbePairMaker::randGen_

private

Definition at line 40 of file TagProbePairMaker.h.

Referenced by TagProbePairMaker(), and ~TagProbePairMaker().

edm::EDGetTokenT<reco::CandidateView> tnp::TagProbePairMaker::srcToken_

private

Definition at line 35 of file TagProbePairMaker.h.