Name: Gang Li (email_not_shown)
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.

------------------------------------------

Thanks a lot.

Gang Li



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