Hi Vladyslav,
Today, I update FeynCalc in my computer. However, one problem is encountered.
I generate the SM model file from FeynRules. It can be used in FeynArts, but not the patched FeynArts with FeynCalc. The details are described below:
My computer information:
OS: Mac OS X 10.9.5
MMA: 8.0.0.0
FeynRules:2.3.19
Case I:
FeynCalc: 9.0.1
FeynArts: 3.9
The FeynCalc is installed by the automatic command in the FeynCalc wiki. During the installation process, FeynArts is automatically installed and patched.
Case II:
FeynArts: 3.9
Just downloaded from FeynArts website.
I generate the FeynArts model files “SM_Unitary_Gauge.mod” and “SM_Unitary_Gauge.gen” in FeynRules with the default SM model file SM.fr. Then, I load the model file in FeynArts using the command
InitializeModel["SM_Unitary_Gauge", GenericModel -> "SM_Unitary_Gauge”]
In case II, It’s OK. In case I, however, I get an error:
TagSetDelayed::tagnf: "Tag FourVector not found in -Overscript[mom_, _]^mu_”.
Maybe, the reason is that some codes of FeynArts are not correctly patched in FeynRules 9.0.1. Could you please check if it is a bug? I upload the relevant files in the link
https://www.dropbox.com/s/u4w19pwpdnv4cjq/debug_FeynRules_9.0.1.zip?dl=0
Thank you for your time.
Best Regards,
Xing-Bo Yuan
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