Name: Gang Li Date: 12/16/16-04:31:22 PM Z
Dear Vladyslav,
Thank you for your prompt response.
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$LoadFeynArts = True;
«FeynCalc`
$FAVerbose = 0;
diag = CreateTopologies[1, 1 -> 2, ExcludeTopologies ->
Internal];
Paint[%, ColumnsXRows -> {2, 2}, Numbering -> None,
SheetHeader -> None, ImageSize -> {256, 256}];
diagF = InsertFields[diag, {S[1]} -> {V[2],
V[2]},
InsertionLevel -> {Classes}, GenericModel -> “Lorentz”,
Model -> “SM”];
Paint[diagF, ColumnsXRows -> {3, 3}, PaintLevel -> {Classes},
SheetHeader -> None, ImageSize -> {256, 256}]
ampc1 = (FCFAConvert[
CreateFeynAmp[DiagramExtract[diagF, 36], Truncated ->
True],
IncomingMomenta -> {p1}, OutgoingMomenta -> {k1, k2},
LoopMomenta -> {q}, UndoChiralSplittings -> False,
DropSumOver -> True, ChangeDimension -> D, List -> True])
/.
FCGV[x_String] :> ToExpression[x] // MatrixForm
OneLoop[q, ampc1]
FDS::failmsg: Error! FDS has encountered a fatal problem and must abort the computation.
The problem reads: fdsOneLoop couldn’t be applied to some of the unique integrals.
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Thanks a lot.
Gang Li