How to calculate cross section for different center of mass energy value in SM

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I want to calculate cross section vs center mass energy energy for triple top quark in SM

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

See question 268443.

Here are the basic instructions.
Main point -- You can scan over a parameter that is not a model parameter!

 So, for example, you could add the lines:

Run parameter: rtS
Run begin: 7
Run step size: 1
Run n steps: 2

to your batch file even though rtS is not a parameter of the model. (You could name it something different if you like.) Then, the momenta can be made functions of the scan parameters. For example,

p1: 1000*rtS/2
p2: 1000*rtS/2

This will plug the scan value of rtS in and then calculate the value before running CalcHEP.

Regards,
      Alexander Belyaev