what changes should i make in batch file if i want to have sum plot of mass vs cross section. and on axis i want to have sum of masses of two particles not a sinle mass

Various examples of the batch files are in

utile/ sub-folder in the CalCHEP installation folder

they called batch_file*

See also CalcHEP manual and the help in the .html file which is created when you run calchep_batch file

These various examples, have for example instructions (utile/batch_file)

Dist parameter: M(b,B)
Dist min: 100
Dist max: 200
Dist n bins: 100
Dist title: p,p->W,b,B
Dist x-title: M(b,B) (GeV)

Which will create the pplotof the differential cross section versus invariant mass of bb-bar pair

You need also install gnuplot. See examples and explanation in my lectures at
https://sites.google.com/site/alexandersbelyaev/teaching/intro-to-hep-tools
in particular in lecture 1

Best,
Alexander

P.S. make sure that you have installed gnuplot

Error in calculation of cross section for e,E->~H3,~X
Please have a look at cs.o and cs.out in Processes/m4/Feynman/p1/single.
Killing all jobs and quitting.
now i,m facing this error. unable to execute batch file

On Fri, 19 Feb 2021 at 09:41, Alexander Belyaev <
<email address hidden>> wrote:

> Your question #695629 on CalcHEP changed:
> https://answers.launchpad.net/calchep/+question/695629
>
> Status: Open => Answered
>
> Alexander Belyaev proposed the following answer:
> Various examples of the batch files are in
>
> utile/ sub-folder in the CalCHEP installation folder
>
> they called batch_file*
>
> See also CalcHEP manual and the help in the .html file which is created
> when you run calchep_batch file
>
> These various examples, have for example instructions
> (utile/batch_file)
>
> Dist parameter: M(b,B)
> Dist min: 100
> Dist max: 200
> Dist n bins: 100
> Dist title: p,p->W,b,B
> Dist x-title: M(b,B) (GeV)
>
> Which will create the pplotof the differential cross section versus
> invariant mass of bb-bar pair
>
> You need also install gnuplot. See examples and explanation in my lectures
> at
> https://sites.google.com/site/alexandersbelyaev/teaching/intro-to-hep-tools
> in particular in lecture 1
>
> Best,
> Alexander
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
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>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/calchep/+question/695629
>
> You received this question notification because you asked the question.
>

So you you have:

"Error in calculation of cross section for e,E->~H3,~X
Please have a look at cs.o and cs.out in Processes/m4/Feynman/p1/single.
Killing all jobs and quitting.
now i,m facing this error. unable to execute batch file"

There are several possible problems:
1. problem in your batch file -- i.e. you have introduces mistake there
2. problem in the model

If you would like we help you, please proivde us:
1. with batch file
2. wtih the model

Best,
Alexander