Brief class description:: The ThePEG::StandardModelBase class provides the base class for all models and an implementation of the couplings and parameters of the Standard Model.
See also ThePEG::StandardModelBase

Name: QCD/RunningAlphaS
Type: Reference to objects of class ThePEG::AlphaSBase

Description:: Reference to an object capable of calculating the running stron coupling at a given scale

Name: QCD/AlphaS
Type: Parameter

Description:: The (fixed) strong coupling constant.
Default value: 0.2
Minimum value: 0
Maximum value: 100

Name: QCD/Nc
Type: Integer parameter

Description:: The number of colours assumed in the Standard model.
Default value: 3
Minimum value: 0
Maximum value: 10

Name: EW/BosonWidth
Type: Switch

Description:

Option for the calculation of the W and Z boson widths
Registered options:

0(Experiment): Use the values from the ParticleData objects
1(LeadingOrder): Calculate them using leading-order formulae
2(HigherOrder): Calculate them including higher order QCD corrections

Default value: 0

Name: EW/Scheme
Type: Switch

Description:

Option for the definition of the electroweak parameters
Registered options:

0(Default): Use the best values for all the electroweak parameters, which can be inconsistent.
1(GMuScheme): Use the G_mu scheme, input parameters mW,mZ and GF
2(alphaMZScheme): Use the alpha_MZ scheme, input parameters mW, mZ and alpha(mZ)
3(NoMass): Input parameters alpha(mZ),GF,sin2thetaW
4(mW): Input parameters mW, GF and sin2thetaW
5(mZ): Input parameters mZ, alphaEM and sin2thetaW
6(Independent): All values input but fixed scale in ME calculations
7(FeynRulesUFO): Input parameters mZ, GF and alpha(mZ). Frequently used by FeynRules/UFO models.

Default value: 0

Name: EW/CKM
Type: Reference to objects of class ThePEG::CKMBase

Description:: Reference to an object capable of calculating the square of the elements of the Cabibbo-Kobayashi-Maskawa flavour mixing matrix

Name: EW/RecalculateEW
Type: Switch

Description:

Recalculate all parameters which depend directly on \(\sin^2\theta_W\) in the initialization disregarding the values previously set. This affects only EW/v_nu, EW/v_e, EW/v_u, EW/v_d, EW/a_nu, EW/a_e, EW/a_u and EW/a_d.
Registered options:

0(No): No
1(Yes): Yes

Default value: 1

Name: EW/a_d
Type: Unlimited Parameter

Description:: The axial coupling between a down-type quark and a Z^0. See also command interface EW/RecalculateEW
Default value: -1

Name: EW/a_u
Type: Unlimited Parameter

Description:: The axial coupling between an up-type quark and a Z^0. See also command interface EW/RecalculateEW
Default value: 1

Name: EW/a_e
Type: Unlimited Parameter

Description:: The axial coupling between a charged lepton and a Z^0. See also command interface EW/RecalculateEW
Default value: -1

Name: EW/a_nu
Type: Unlimited Parameter

Description:: The axial coupling between a neutrino and a Z^0. See also command interface EW/RecalculateEW
Default value: 1

Name: EW/v_d
Type: Unlimited Parameter

Description:: The vector coupling between a down-type quark and a Z^0. See also command interface EW/RecalculateEW
Default value: -0.690667

Name: EW/v_u
Type: Unlimited Parameter

Description:: The vector coupling between an up-type quark and a Z^0. See also command interface EW/RecalculateEW
Default value: 0.381333

Name: EW/v_e
Type: Unlimited Parameter

Description:: The vector coupling between a charged lepton and a Z^0. See also command interface EW/RecalculateEW
Default value: -0.072

Name: EW/v_nu
Type: Unlimited Parameter

Description:: The vector coupling between a neutrino and a Z^0. See also command interface EW/RecalculateEW
Default value: 1

Name: EW/e_d
Type: Unlimited Parameter

Description:: The coupling between a down-type quark and a photon.
Default value: -0.333333

Name: EW/e_u
Type: Unlimited Parameter

Description:: The coupling between an up-type quark and a photon.
Default value: 0.666667

Name: EW/e_e
Type: Unlimited Parameter

Description:: The coupling between a charged lepton and a photon.
Default value: -1

Name: EW/e_nu
Type: Unlimited Parameter

Description:: The coupling between a neutrino and a photon.
Default value: 0

Name: EW/FermiConstant
Type: Parameter

Description:: The Fermi constants G_F
Default value: 1.16637e-05
Minimum value: 1e-05
Maximum value: 2e-05

Name: EW/Sin2ThetaW
Type: Parameter

Description:: The square of the sine of the weak mixing angel
Default value: 0.232
Minimum value: 0
Maximum value: 1

Name: EW/RunningAlphaEM
Type: Reference to objects of class ThePEG::AlphaEMBase

Description:: Reference to an object capable of calculating the running electro-magnetic coupling at a given scale

Name: EW/AlphaEMMZ
Type: Parameter

Description:: The electro-magnetic coupling constant at the Z mass.
Default value: 0.00775735
Minimum value: 0
Maximum value: 1

Name: EW/AlphaEM
Type: Parameter

Description:: The electro-magnetic coupling constant at zero momentum transfer.
Default value: 0.00729714
Minimum value: 0
Maximum value: 1

Name: NumberOfFamilies
Type: Integer parameter

Description:: The number of families assumed in the Standard model.
Default value: 3
Minimum value: 0
Maximum value: 5