Di< Obj1, Obj2 >

Description

template<typename Obj1, typename Obj2>
struct DAS::Di< Obj1, Obj2 >

Generic template class to store of a system of 2 objects and facilitate the handling of the variations as well as the calculation of frequent variables.

Obj1 and Obj2 are expected to be either derivated from PhysicsObjects or other specialisations of Di<> itself. Such nesting allows for complex objects such as Z+jets or ttbar systems.

The components of the system are not stored directly but are pointers to existing objects to avoid redundancy / inconsistencies and keep the object light.

To obtain variations of the composite system, an instance of DAS::Uncertainties::Variation may be given as argument of all relevant methods. This object is passed over to the components of the system.

#include <Di.h>

Inheritance diagram for Di< Obj1, Obj2 >:

Collaboration diagram for Di< Obj1, Obj2 >:

Public Types
using	base = std::pair< Obj1 *, Obj2 * >

Public Member Functions
	operator bool () const
void	clear ()
FourVector	CorrP4 (const Uncertainties::Variation &v=Uncertainties::nominal) const override
float	CorrPt (const Uncertainties::Variation &v=Uncertainties::nominal) const override
float	Rapidity (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	AbsRap (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	DeltaEta (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	DeltaPhi (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	DeltaR (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	Yboost (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	Ystar (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	Ymax (const Uncertainties::Variation &v=Uncertainties::nominal) const
float	HT (const Uncertainties::Variation &v=Uncertainties::nominal) const
double	Weight (const Uncertainties::Variation &v=Uncertainties::nominal) const override
Public Member Functions inherited from AbstractPhysicsObject
	AbstractPhysicsObject ()=default
virtual	~AbstractPhysicsObject ()=default

Member Typedef Documentation

base

using base = std::pair<Obj1*, Obj2*>

Member Function Documentation

AbsRap()

float AbsRap ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return std::abs(Rapidity(v)); }

clear()

void clear ( )

inline

{ first = nullptr; second = nullptr; }

CorrP4()

FourVector CorrP4 ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inlineoverridevirtual

Implements AbstractPhysicsObject.

                        { return first->CorrP4(v) + second->CorrP4(v); }

CorrPt()

float CorrPt ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inlineoverridevirtual

Implements AbstractPhysicsObject.

                        { return CorrP4(v).Pt(); }

DeltaEta()

float DeltaEta ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return second->CorrP4(v).Eta() - first->CorrP4(v).Eta(); }

DeltaPhi()

float DeltaPhi ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return ROOT::Math::VectorUtil::DeltaPhi(first->CorrP4(v), second->CorrP4(v)); }

DeltaR()

float DeltaR ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return ROOT::Math::VectorUtil::DeltaR  (first->CorrP4(v), second->CorrP4(v)); }

HT()

float HT ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return (first->CorrPt(v) + second->CorrPt(v))/2; }

operator bool()

operator bool ( ) const

inlineexplicit

< Second particle in the pair (field imported from std::pair)

{ return first && second; }

Rapidity()

float Rapidity ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return CorrP4(v).Rapidity(); }

Weight()

double Weight ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inlineoverridevirtual

Implements AbstractPhysicsObject.

                        { return first->Weight(v) * second->Weight(v); }

Yboost()

float Yboost ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return (first->Rapidity(v) + second->Rapidity(v))/2; }

Ymax()

float Ymax ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return std::max(first->AbsRap(), second->AbsRap()); }

Ystar()

float Ystar ( const Uncertainties::Variation &  v = Uncertainties::nominal ) const

inline

                        { return (first->Rapidity(v) - second->Rapidity(v))/2; }

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The documentation for this struct was generated from the following file:

• /builds/cms-analysis/general/DasAnalysisSystem/Core/Installer/Core/Objects/interface/Di.h