Name: Vladyslav Shtabovenko Date: 04/12/16-03:05:11 PM Z
Hi Xing-Bo,
strange. Could you may be show me how your output of CreateFeynAmp[inserttops3] looks like?
In my case it is
FAFeynAmpList[Process -> {{F[2, {3}],
FourMomentum[Incoming, 1],
FCGV[“ML”], {-Charge, LeptonNumber}}} ->
{{F[1, {3}], FourMomentum[Outgoing, 1], 0, {0,
LeptonNumber}},
{-F[3, {1, o}], FourMomentum[Outgoing, 2],
FCGV[“MU”],
{(-2*Charge)/3, (-2*ColorCharge)/Sqrt[3]}},
{F[4, {1, o}], FourMomentum[Outgoing, 3],
FCGV[“MD”],
{-Charge/3, (2*ColorCharge)/Sqrt[3]}}}, Model ->
{“SM”},
GenericModel -> {“Lorentz”}, AmplitudeLevel -> {Particles},
ExcludeParticles -> {}, ExcludeFieldPoints -> {},
LastSelections ->
{V[3]}][FAFeynAmp[GraphID[Topology == 1, Generic
== 1,
Particles == 1, Number == 1], Integral[],
-(FAMetricTensor[Index[Lorentz, 1], Index[Lorentz,
2]]*
FAPropagatorDenominator[FourMomentum[Outgoing, 2] +
FourMomentum[Outgoing, 3], FCGV[“MW”]]*
FermionChain[FANonCommutative[FADiracSpinor[FourMomentum[Outgoing,
1],
0]],
(I*FANonCommutative[FADiracMatrix[Index[Lorentz,
1]],
FAChiralityProjector[-1]]*FCGV[“EL”])/(Sqrt[2]*FCGV[“SW”]),
FANonCommutative[FADiracSpinor[FourMomentum[Incoming,
1],
FCGV[“ML”]]]]*FermionChain[FANonCommutative[
FADiracSpinor[FourMomentum[Outgoing, 3],
FCGV[“MD”]]],
(I*FANonCommutative[FADiracMatrix[Index[Lorentz,
2]],
FAChiralityProjector[-1]]*FCGV[“EL”])/(Sqrt[2]*FCGV[“SW”]),
FANonCommutative[FADiracSpinor[-FourMomentum[Outgoing,
2],
FCGV[“MU”]]]])]]
Does reinstalling FeynCalc (and thus also FeynArts) helps?
Cheers,
Vladyslav