Name: Sanisnack Date: 08/13/02-03:38:48 PM Z
Hi,
Could you help me? I’d like to understand the way I can traslate SM or
SMQCD amplitudes from FeynArts to FaynCalc format to continue the
calculation.
Maibe some setteing (that I have not undestand) is required to work using the general model “Lorentz” and models SM or SMQCD.
1) I have unpacked the last version of FeynCalc and FeynArts3 in the right places
2) I loaded the packages
$LoadPhi=True;
$LoadFeynArts=True;
<<“HighEnergyPhysics`FeynCalc`”
and processed the pach
3) I tried to evaluate:
In[4]:=
tt=CreateTopologies[0,2\[Rule]2];
In[6]:=
aa=InsertFields[tt,{F[2,{1}],-F[2,{1}]}\[Rule]{F[2,{2}],-F[2,{2}]},
ExcludeParticles\[Rule]{V[2],V[3],
S[_]},InsertionLevel\[Rule]Classes,
Model\[Rule]”SM”];
>From In[6]:=
\!\(\*FormBox[
RowBox[{\(InitializeModel::”incomp2”\), \(\(:\)\(
\)\),
“\<\“Incompatible \
index structure in classes coupling \\!
…..
\\0\\) indices, not
\\!\\(TraditionalForm\\1\\).\”\>”}],
TraditionalForm]\)
Out[6]=
\!\(TraditionalForm\$Aborted\)
What is wrong or missing?
Is there any
a) command
b) setting or
c) sub-package
to insert SM or QCDSM fields in the topology and continue calculation?
Thank you very much for the time yuo will spend to answer
Best Regards
Francesco Tramontano