feynlag.models.ElectroweakScaffold

class feynlag.models.ElectroweakScaffold(SU2L, U1Y, gw, g1, H, v, lam, mu2, W, B)

The SM electroweak scaffold: gauge groups, Higgs, and core parameters.

Parameters:

• SU2L (object)

• U1Y (object)

• gw (object)

• g1 (object)

• H (object)

• v (object)

• lam (object)

• mu2 (object)

• W (object)

• B (object)

SU2L, U1Y

the gauge groups.

gw, g1

their coupling ExternalParameters.

H

the Higgs doublet (VEV already expanded).

Type:

object

v, lam, mu2

the Higgs-sector parameters.

W, B

the SU(2) / U(1) gauge-boson fields.

__init__(SU2L, U1Y, gw, g1, H, v, lam, mu2, W, B)

Parameters:

• SU2L (object)

• U1Y (object)

• gw (object)

• g1 (object)

• H (object)

• v (object)

• lam (object)

• mu2 (object)

• W (object)

• B (object)

Return type:

None

Methods

__init__(SU2L, U1Y, gw, g1, H, v, lam, mu2, W, B)
add_higgs(L)	Add the Higgs kinetic + potential terms to a Lagrangian.

Attributes

fields	Higgs + the two gauge-boson fields.
gauge_groups
parameters	The five core EW parameters, in dependency-safe order.
SU2L
U1Y
gw
g1
H
v
lam
mu2
W
B