Interfaces defined for the Pythia7::TimeShowerHandler class.

Brief class description:
Administers the time-like shower.
See also Pythia7::TimeShowerHandler
Name: Q0FracPS
Type: Parameter
Description:
Fraction of Q0 cut-off mass used as safety margin in daughter mass sum. Relevant for total parton multiplicity.
Default value: 0.25
Minimum value: 0
Maximum value: 1
Name: AlphaEMFix
Type: Parameter
Description:
Fixed $alpha_{\mbox{EM}}$ value.
Default value: 0.0073
Minimum value: 0
Maximum value: 10
Name: Lambda5
Type: Parameter
Description:
$\Lambda_{\mbox{QCD}}$ (five flavours) in alpha_strong for AlphaSMode >= 1.
Default value: 0.25
Minimum value: 0
Maximum value: 10
Name: AlphaSFix
Type: Parameter
Description:
Fixed $\alpha_S$ value for AlphaSMode == 0.
Default value: 0.2
Minimum value: 0
Maximum value: 10
Name: Q0ChgL
Type: Parameter
Description:
Parton shower cut-off mass for pure QED branchings. Assumed <= Q0ChgQ.
Default value: 0.001 (May be changed by member function.)
Minimum value: 0
Maximum value: 1000
Name: Q0ChgQ
Type: Parameter
Description:
Parton shower cut-off mass for photon coupling to coloured particle.
Default value: 1
Minimum value: 0
Maximum value: 1000
Name: Q0
Type: Parameter
Description:
Parton shower cut-off mass for QCD emissions.
Default value: 1
Minimum value: 0
Maximum value: 1000
Name: RespectScale
Type: Switch
Description:
Use the scale variable of original partons to restrict branchings.
Registered options:
0(No)
No restriction.
1(Q2)
Restrict with $Q^2 <$ scale.
2(PT2)
Restrict with $p_\perp^2 <$ scale.
3(ETheta2)
Restrict with $(E*\theta)^2 <$ scale.
4(Theta2)
Restrict with $\theta^2 <$ scale.
Default value: 0
Name: PhiCoherAsym
Type: Switch
Description:
Azimuthal asymmetry induced by colour coherence.
Registered options:
0(No)
No asymmetry.
1(Yes)
Asymmetry
Default value: 1
Name: PhiPolAsym
Type: Switch
Description:
Azimuthal asymmetry induced by gluon polarization.
Registered options:
0(No)
No asymmetry.
1(Yes)
Asymmetry
Default value: 1
Name: InitialCone
Type: Switch
Description:
Restrict first emission within cone given by colour flow in hard process.
Registered options:
0(No)
Don't restric emissions.
1(Yes)
Restrict emissions with isotropic phi angle inside cone.
2(Asym)
Restrict emissions with anisotropic phi angle inside cone.
Default value: 2
Name: QEDShower
Type: Switch
Description:
Allow a QED shower together with QCD ones.
Registered options:
0(No)
Don't use QED showers
1(Yes)
Allow on-shell photon emissions.
2(Photon)
Allow both photon emissions and photon branchings.
Default value: 2
Name: MEMode
Type: Switch
Description:
Use of matrix element corrections.
Registered options:
0(No)
Don't use matrix element corrections.
1(Yes)
Use matrix element corrections.
Default value: 1
Name: AlphaSMode
Type: Switch
Description:
Running of $\alpha_S$ in evolution.
Registered options:
0(Fix)
Use fixed $\alpha_S$
1(Q2)
Running $\alpha_S$ with scale $Q^2/4$.
2(PT2)
Running $\alpha_S$ with scale $p_\perp^2$.
3(Mixed)
Running $\alpha_S$ with scale $p_\perp^2$ except for $g\rightarrow q\bar{q}$ where $Q^2/4$ is used.
Default value: 2
Name: NQuark
Type: Integer parameter
Description:
Number of allowed quark flavours in $g\rightarrow q\bar{q}$ branching.
Default value: 5
Minimum value: 0
Maximum value: 10
Name: AngularOrdering
Type: Switch
Description:
Angular ordering in shower
Registered options:
0(Off)
Don't use angular ordering
1(Gluon)
Use angular ordering for gluon emissions.
2(AllQCD)
Use angular ordering for all QCD splittings.
Default value: 2
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