CalcHEP

implementation of the Tprime model

Asked by chahrazed

HI,
I was working in the physics beyond the standard model exactely in the vector-like top-prime quark, for this I download the Tprime model for generate a pair of Tprime but after importing the model , I found a problem on the vertex Tp-tp-Z which a flag : (core dumped) appears in the interface of Calchep . I think that I solved this problem by adjusting the vertex but I dont know if it is correct . I want to check it for me !

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Alexander Pukhov (pukhov) said : 		#1

Send me your model, please.

Alexander Pukhov

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Alexander Pukhov (pukhov) said : 		#3

The problem was solved via email exchange.
FeynRules often generate model file which is not accepted by CalcHEP.
Namely devision operator can appear in Lorentz part of Lagrangian. To fix the problem one has to move denominator to the Factor column.

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Neil Christensen (neil-christensen-qft) said : 		#4

Interesting. It didn't used to do this, but I tried to optimize the Lorentz part further and probably let denominators slip back in. I will have to fix this some time. In the meantime, you can always write your Lagrangian without denominators (by defining parameters appropriately) and this will not happen.

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Alexander Belyaev (alexander.belyaev) said : 		#5

The problem was solved via email exchange.