Classes
struct	SmearedReconstructedParticle
	generates new reco particles, smeared by given parameters More...

struct	SmearedTracks
	generates new track states, by rescaling the covariance matrix of the tracks More...

struct	SmearedTracksdNdx
	generates new track dNdx, by rescaling the poisson error of the cluster count More...

struct	SmearedTracksTOF
	generates new tracker hits, by rescaling the timing measurement More...

Functions
TVectorD	TrackParamFromMC_DelphesConv (edm4hep::MCParticleData aMCParticle)
	for a given MC particle, returns a "track state", i.e.

ROOT::VecOps::RVec< edm4hep::TrackState >	mcTrackParameters (const ROOT::VecOps::RVec< edm4hep::ReconstructedParticleData > &allRecoParticles, const ROOT::VecOps::RVec< edm4hep::TrackState > &alltracks, const ROOT::VecOps::RVec< int > &RP2MC_indices, const ROOT::VecOps::RVec< edm4hep::MCParticleData > &mcParticles)
	used to validate the method above.

TVectorD	CovSmear (TVectorD x, TMatrixDSym C, TRandom *ran, bool debug)
	generates random values for a vector, given the covariance matrix of its components, using a Choleski decomposition.

Function Documentation

◆ CovSmear()

TVectorD FCCAnalyses::SmearObjects::CovSmear	(	TVectorD	x,
		TMatrixDSym	C,
		TRandom *	ran,
		bool	debug = `false`
	)

generates random values for a vector, given the covariance matrix of its components, using a Choleski decomposition.

Code from Franco Bedeschi

ROOT::VecOps::RVec< edm4hep::TrackState > FCCAnalyses::SmearObjects::mcTrackParameters	(	const ROOT::VecOps::RVec< edm4hep::ReconstructedParticleData > &	allRecoParticles,
		const ROOT::VecOps::RVec< edm4hep::TrackState > &	alltracks,
		const ROOT::VecOps::RVec< int > &	RP2MC_indices,
		const ROOT::VecOps::RVec< edm4hep::MCParticleData > &	mcParticles
	)

used to validate the method above.

Stores the "MC-truth track states", in a collection that runs parallel to the full collection of tracks.

TVectorD FCCAnalyses::SmearObjects::TrackParamFromMC_DelphesConv ( edm4hep::MCParticleData aMCParticle )

for a given MC particle, returns a "track state", i.e.

a vector of 5 helix parameters, in Delphes convention