Hello Vladyslav,
I imagine this is probably something trivial but I am nonetheless struggling in adding widths to the internal propagators generated with FeynArts. In the manual there's a singular part explaining that
SetOptions[InitializeModel, ModelEdit :>
(M$ClassesDescription = M$ClassesDescription /. MZ -> MZc)]
should suffice, though in my code
SetOptions[InitializeModel,
ModelEdit :> (M$ClassesDescription =
M$ClassesDescription /. {MZ -> MZc, MW -> MWc, MH -> MHc})]
InitializeModel[{SM, UnitarySM},
GenericModel -> {Lorentz, UnitaryLorentz}];
NoElectronHCoupling =
ExcludeFieldPoints -> {FieldPoint[0][-F[2, {1}], F[1, {1}], S[3]],
FieldPoint[0][-F[2, {1}], F[2, {1}], S[1]],
FieldPoint[0][-F[2, {1}], F[2, {1}], S[2]]}
part = InsertFields[
CreateTopologies[0,
2 -> 3], {F[2, {1}], -F[2, {1}]} -> {F[3, {3}], -F[3, {3}], S[1]},
Restrictions -> NoElectronHCoupling, InsertionLevel -> {Classes},
Model -> {SM, UnitarySM},
GenericModel -> {Lorentz, UnitaryLorentz}];
Paint[part, PaintLevel -> {Classes}]
The part pertaining the widths makes no change on the amplitudes (leading to no widths at the propagators). What am I doing wrong?
Thank you,
Duarte
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