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Herwig  7.2.1
Interfaces defined for the Herwig::DipoleShowerHandler class.
Brief class description:
The DipoleShowerHandler class manages the showering using the dipole shower algorithm.
See also Herwig::DipoleShowerHandler

Name: OffShellInShower
Type: Varying size vector of integer parameters

Description:
PDG codes of the coloured particles that can be off-shell in the process.
Default value: 0
Minimum value: -10000000
Maximum value: 10000000

Name: PowhegDecayEmission
Type: Switch

Description:
Use Powheg style emission for the decays
Registered options:
0(No)
Powheg decay emission off
1(Yes)
Powheg decay emission on
Default value: 1

Name: SplittingReweight
Type: Reference to objects of class Herwig::DipoleSplittingReweight

Description:
Set the splitting reweight.

Name: EventReweight
Type: Reference to objects of class

Description:


Name: Detuning
Type: Parameter

Description:
A value to detune the overestimate kernel.
Default value: 1
Minimum value: 1

Name: FreezeGrid
Type: Integer parameter

Description:

Default value: 500000
Minimum value: 1

Name: DoCompensate
Type: Switch

Description:

Registered options:
0(No)
1(Yes)
Default value: 0

Name: FactorizationScaleFreeze
Type: Parameter

Description:
The freezing scale for the factorization scale.
Default value: 2
Minimum value: 0

Name: RenormalizationScaleFreeze
Type: Parameter

Description:
The freezing scale for the renormalization scale.
Default value: 1
Minimum value: 0

Name: PrintEvent
Type: Integer parameter

Description:
[debug option] The number of events for which debugging information should be provided.
Default value: 0
Minimum value: 0

Name: Verbosity
Type: Integer parameter

Description:
[debug option] Set the level of debug information provided.
Default value: 0
Minimum value: 0

Name: FirstMCatNLOEmission
Type: Switch

Description:
[debug option] Only perform the first MC emission.
Registered options:
0(No)
Produce all emissions.
1(Yes)
Perform only the first MC emission.
Default value: 0

Name: DiscardNoEmissions
Type: Switch

Description:
[debug option] Discard events without radiation.
Registered options:
0(No)
Do not discard events without radiation.
1(Yes)
Discard events without radiation.
Default value: 0

Name: NEmissions
Type: Integer parameter

Description:
[debug option] Limit the number of emissions to be generated. Zero does not limit the number of emissions.
Default value: 0
Minimum value: 0

Name: ChainOrderVetoScales
Type: Switch

Description:
[experimental] Switch the chain ordering for veto scales on or off.
Registered options:
0(No)
Switch off chain ordering for veto scales.
1(Yes)
Switch on chain ordering for veto scales.
Default value: 1

Name: RealignmentScheme
Type: Switch

Description:
The realignment scheme to use.
Registered options:
0(PreserveRapidity)
Preserve the rapidity of non-coloured outgoing system.
1(EvolutionFractions)
Use momentum fractions as generated by the evolution.
2(CollisionFrame)
Determine realignment from collision frame.
Default value: 0

Name: NegCMECScaling
Type: Parameter

Description:
Scaling factor for the negative colour matrix element corrections (CMECs).
Default value: 0
Minimum value: 0

Name: CMECReweightFactor
Type: Parameter

Description:
Factor used in the reweighting algorithm.
Default value: 1
Minimum value: 0

Name: ReferenceWeight
Type: Parameter

Description:
Reference weight for the partial unweighting.
Default value: 0.1
Minimum value: 0

Name: DoPartialUnweighting
Type: Switch

Description:
Switch on or off partial unweighting at the dipole splitting level.
Registered options:
0(Off)
Switch off partial unweighting.
1(On)
Switch on partial unweighting.
Default value: 1

Name: DoPartialUnweightingAtEmission
Type: Switch

Description:
Switch on or off partial unweighting at the emission level.
Registered options:
0(Off)
Switch off partial unweighting.
1(On)
Switch on partial unweighting.
Default value: 1

Name: DensityOperatorCutoff
Type: Parameter

Description:
Cutoff for momentum invariants for the density operator evolution.
Default value: 1
Minimum value: 0

Name: DensityOperatorEvolution
Type: Integer parameter

Description:
Scheme for evolving the density operator.
Default value: 0
Minimum value: 0

Name: SubleadingNcEmissionsLimit
Type: Integer parameter

Description:
Number of emissions to calculate subleading Nc corrections for.
Default value: 0
Minimum value: 0

Name: DoSubleadingNc
Type: Switch

Description:
Switch on or off subleading Nc corrections.
Registered options:
0(Off)
Switch off subleading Nc corrections.
1(On)
Switch on subleading Nc corrections.
Default value: 1

Name: GlobalAlphaS
Type: Reference to objects of class ThePEG::AlphaSBase

Description:
Set a global strong coupling for all splitting kernels.

Name: IntrinsicPtGenerator
Type: Reference to objects of class Herwig::IntrinsicPtGenerator

Description:
Set the object in charge to generate intrinsic pt for incoming partons.

Name: ConstituentReshuffler
Type: Reference to objects of class Herwig::ConstituentReshuffler

Description:
The object to be used to reshuffle partons to their constitutent mass shells.

Name: EvolutionOrdering
Type: Reference to objects of class Herwig::DipoleEvolutionOrdering

Description:
Set the evolution ordering to be used.

Name: Kernels
Type: Varying size vector of references to objects of class Herwig::DipoleSplittingKernel

Description:
Set the splitting kernels to be used by the dipole shower.

There may be interfaces inherited from the Herwig::ShowerHandler class.