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Mēnsūra
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Represents a reconstructed jet. More...
#include <Jet.hpp>
Public Types | |
| enum | BTagAlgo : unsigned { CSV = 0, CMVA = 1 } |
| Supported b-tagging algorithms. | |
| enum | CTagAlgo : unsigned { CvsB = 0, CvsL = 1 } |
| Supported c-tagging algorithms. | |
Public Member Functions | |
| Jet () noexcept | |
| Constructor with no parameters. | |
| virtual void | Reset () |
| Resets the object to a state right after the default initialisation. | |
| void | SetCorrFactor (float jecFactor) |
| Sets full jet energy correction factor. | |
| void | SetJECUncertainty (float jecUncertainty) |
| Sets relative uncertainty of the JEC factor. | |
| void | SetJERUncertainty (float jecUncertainty) |
| Sets relative uncertainty of the JER smearing factor. | |
| void | SetBTag (BTagAlgo algo, float value) |
| Sets value of the given b-tagging discriminator. | |
| void | SetCTag (CTagAlgo algo, float value) |
| Sets value of the given c-tagging discriminator. | |
| void | SetSecVertexMass (float mass) |
| Sets mass of the secondary vertex associated with the jet. | |
| void | SetPileUpID (float pileUpMVA) |
| Sets value of the pile-up discriminator. | |
| void | SetArea (float area) |
| Sets jet area. | |
| void | SetCharge (float charge) |
| Sets electric charge of the jet. More... | |
| void | SetPullAngle (float angle) |
| Sets the pull angle. More... | |
| void | SetFlavour (int flavour) |
| Sets jet flavour. More... | |
| float | CorrFactor () const |
| Returns full jet energy correction factor. More... | |
| float | JECUncertainty () const |
| Returns relative uncertainty of the JEC factor. More... | |
| float | JERUncertainty () const |
| Returns relative uncertainty of the JER smearing factor. More... | |
| float | BTag (BTagAlgo algo) const |
| Returns value of the requested b-tagging discriminator. | |
| float | CTag (CTagAlgo algo) const |
| Returns value of the requested c-tagging discriminator. | |
| float | PileUpID () const |
| Returns value of the pile-up discriminator. | |
| float | SecVertexMass () const |
| Returns mass of the secondary vertex associated with the jet. More... | |
| float | Area () const |
| Returns jet area. | |
| float | Charge () const |
| Returns electric charge of the jet. More... | |
| float | PullAngle () const |
| Returns jet pull angle. More... | |
| int | Flavour () const |
| Returns jet flavour. More... | |
 Public Member Functions inherited from pec::CandidateWithID | |
| CandidateWithID () noexcept | |
| Constructor with no parameters. | |
| void | SetBit (unsigned index, bool value=true) |
| Sets or unsets an ID bit. More... | |
| bool | TestBit (unsigned index) const |
| Tests an ID bit. More... | |
| Public Member Functions inherited from pec::Candidate | |
| Candidate () noexcept | |
| Constructor with no parameters. More... | |
| Candidate (Candidate &&)=default | |
| Default move constructor. | |
| Candidate (Candidate const &)=default | |
| Default copy constructor. | |
| Candidate & | operator= (Candidate const &)=default |
| Default assignment operator. | |
| virtual | ~Candidate ()=default |
| Default virtual destructor. | |
| void | SetPt (float pt) |
| Sets transverse momentum (GeV/c) | |
| void | SetEta (float eta) |
| Sets pseudorapidity. | |
| void | SetPhi (float phi) |
| Sets azimuthal angle. More... | |
| void | SetM (float mass) |
| Sets mass (GeV/c^2) | |
| float | Pt () const |
| Returns transverse momentum (GeV/c) | |
| float | Eta () const |
| Returns pseudorapidity. | |
| float | Phi () const |
| Returns azimuthal angle. More... | |
| float | M () const |
| Returns mass (GeV/c^2) | |
Represents a reconstructed jet.
Stored four-momentum (via the Candidate base class) is uncorrected. Some properties of a jet (especially of a soft one) might be left uninitialized if they are not expected to be used in an analysis. Properties that make sence for simulations only (like flavours) are not expected to be set in case of real data.
| float Jet::Charge | ( | ) | const |
Returns electric charge of the jet.
Several definitions of jet charge are used [1]. This method is expected to return the value given by pat::Jet::jetCharge, which is calculated as a sum of electric charges of jet constituents weighted with their pt, as documented in [2]. [1] http://arxiv.org/abs/1209.2421 [2] https://hypernews.cern.ch/HyperNews/CMS/get/JetMET/1425.html
| float Jet::CorrFactor | ( | ) | const |
Returns full jet energy correction factor.
The raw momentum should be rescaled using this factor in order to apply full JEC and JER. The returned value might be zero if only raw momentum is saved and the correction must be applied by the user.
| int Jet::Flavour | ( | ) | const |
Returns jet flavour.
Expected to return zero for real data. If the flavour of a jet in a simulated event is undefined, a zero is returned.
| float Jet::JECUncertainty | ( | ) | const |
Returns relative uncertainty of the JEC factor.
Jet four-momentum corresponding to the up/down variation in the JEC systematics can be obtained as P4() * CorrFactor() * (1 +/- JECUncertainty()). If only raw momentum has been stored and the correction is to be applied by the user, the method returns zero.
| float Jet::JERUncertainty | ( | ) | const |
Returns relative uncertainty of the JER smearing factor.
Jet four-momentum corresponding to the up/down variation in the JER systematics can be obtained as P4() * CorrFactor() * (1 +/- JERUncertainty()). If only raw momentum has been stored and the correction is to be applied by the user, the method returns zero.
| float Jet::PullAngle | ( | ) | const |
Returns jet pull angle.
The pull vector is defined in [1], Eq. (3.7). The pull angle is an angle between this vector and the rapidity axis. The range is [-pi, pi). [1] http://arxiv.org/abs/1010.3698
| float Jet::SecVertexMass | ( | ) | const |
Returns mass of the secondary vertex associated with the jet.
When there is no secondary vertex associated with the jet, the method returns 0.
| void Jet::SetCharge | ( | float | charge | ) |
Sets electric charge of the jet.
See documentation for the method Charge for a description of this quantity.
| void Jet::SetFlavour | ( | int | flavour | ) |
Sets jet flavour.
This method must be used for simulation only. It is assumed that the flavour is determined with the clustering of ghost hadrons as described in [1]. [1] https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuideBTagMCTools
| void Jet::SetPullAngle | ( | float | angle | ) |
Sets the pull angle.
See documentation of the method PullAngle for a description of this quantity.
1.8.10
