BPHCompositeVertexSelect Class Reference

Inheritance diagram for BPHCompositeVertexSelect:

Public Member Functions
bool	accept (const pat::CompositeCandidate &cand, const reco::Vertex *pvtx=0) const
	BPHCompositeVertexSelect (float probMin, float cosMin=-1.0, float sigMin=-1.0)
Public Member Functions inherited from BPHHistoSpecificDecay::CandidateSelect
virtual	~CandidateSelect ()

Private Attributes
float	cMin
float	pMin
float	sMin

Detailed Description

Definition at line 263 of file BPHHistoSpecificDecay.cc.

Constructor & Destructor Documentation

BPHCompositeVertexSelect::BPHCompositeVertexSelect ( float  probMin, float  cosMin = -1.0, float  sigMin = -1.0  )

inline

Definition at line 265 of file BPHHistoSpecificDecay.cc.

                                                  : pMin( probMin ),
                                                    cMin(  cosMin ),
                                                    sMin(  sigMin ) {
  }

Member Function Documentation

bool BPHCompositeVertexSelect::accept ( const pat::CompositeCandidate &  cand, const reco::Vertex *  pvtx = 0  ) const

inlinevirtual

Implements BPHHistoSpecificDecay::CandidateSelect.

Definition at line 271 of file BPHHistoSpecificDecay.cc.

References reco::Vertex::chi2(), ChiSquaredProbability(), reco::Vertex::error(), BPHUserData::get(), ResonanceBuilder::mass, GlobalErrorBase< T, ErrorWeightType >::matrix(), reco::Vertex::ndof(), ALCARECOTkAlMinBias_cff::pMin, mathSSE::sqrt(), Measurement1D::value(), reco::Vertex::x(), and reco::Vertex::y().

Referenced by Vispa.Gui.BoxContentDialog.BoxContentDialog::apply(), Vispa.Plugins.ConfigEditor.ToolDialog.ToolDialog::apply(), and esMonitoring.FDJsonServer::handle_accept().

                                                  {
    const reco::Vertex* svtx = BPHUserData::get
         <reco::Vertex>( cand, "vertex" );
    if ( svtx == 0 ) return false;
    if ( pvtx == 0 ) return false;
    if ( pMin > 0 ) {
      if ( ChiSquaredProbability( svtx->chi2(),
                                  svtx->ndof() ) < pMin ) return false;
    }
    if ( ( cMin > 0 ) || ( sMin > 0 ) ) {
      TVector3 disp( svtx->x() - pvtx->x(),
                     svtx->y() - pvtx->y(),
                     0 );
      TVector3 cmom( cand.px(), cand.py(), 0 );
      float cosAlpha = disp.Dot( cmom ) / ( disp.Perp() * cmom.Perp() );
      if ( cosAlpha < cMin ) return false;
      if ( sMin < 0 ) return true;
      float mass = cand.mass();
      AlgebraicVector3 vmom( cand.px(), cand.py(), 0 );
      VertexDistanceXY vdistXY;
      Measurement1D distXY = vdistXY.distance( *svtx, *pvtx );
      double ctauPV = distXY.value() * cosAlpha * mass / cmom.Perp();
      GlobalError sve = svtx->error();
      GlobalError pve = pvtx->error();
      AlgebraicSymMatrix33 vXYe = sve.matrix() + pve.matrix();
      double ctauErrPV = sqrt( ROOT::Math::Similarity( vmom, vXYe ) ) * mass /
                               cmom.Perp2();
      if ( ( ctauPV / ctauErrPV ) < sMin ) return false;
    }
    return true;
  }

Member Data Documentation

float BPHCompositeVertexSelect::cMin

private

Definition at line 306 of file BPHHistoSpecificDecay.cc.

float BPHCompositeVertexSelect::pMin

private

Definition at line 305 of file BPHHistoSpecificDecay.cc.

float BPHCompositeVertexSelect::sMin

private

Definition at line 307 of file BPHHistoSpecificDecay.cc.