C++ class to handle the JES/JEC weight calculations. More...

Public Member Functions
template<class T >
RVec< RVec< float > >	eval (std::vector< T > jets, float fixedGridRhoFastjetAll)
	If redoJECs is true, evaluation calculates the weight necessary to uncorrect and recorrect the jet energy for each jet in the provided vector of jets*. In either case of redoJECs, the uncertainties are calculated. See JetRecalibrator for more information on the algorithm. More...

	JES_weight (str jecTag, str jetType, str uncertType="", bool redoJECs=false)
	Construct a new JES weight object. More...

Detailed Description

C++ class to handle the JES/JEC weight calculations.

Constructor & Destructor Documentation

◆ JES_weight()

JES_weight	(	str	jecTag,
		str	jetType,
		str	uncertType = `""`,
		bool	redoJECs = `false`
	)

Construct a new JES weight object.

Parameters

jecTag	The JEC tag to identify the JEC files to load.
jetType	The type of jet - ex. AK8PFPuppi.
uncertType	Empty string for the total uncertainty but any uncertainty in the JEC file can be provided. Default is empty string.
redoJECs	Set to false if the sample already has the desired JECs applied. If true, derive correction that undoes the current JECs and applies new ones instead. Uncertainty variations are calculated in either case. Defaults to false.

Member Function Documentation

◆ eval()

RVec<RVec<float> > eval	(	std::vector< T >	jets,
		float	fixedGridRhoFastjetAll
	)

If redoJECs is true, evaluation calculates the weight necessary to uncorrect and recorrect the jet energy for each jet in the provided vector of jets*. In either case of redoJECs, the uncertainties are calculated. See JetRecalibrator for more information on the algorithm.

NOTE that the "jet" is a struct which is custom made by TIMBER's analyzer() to have the branches of the collection as the attributes of the struct. To use it in TIMBER, just reference the vector of all struct of objections named <CollectionName>s (ex. FatJets).