LesHouchesEvents: how to read .lhe file

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To extract initial and final momentum values from a .lhe file related to the u u > u u interaction, the recommended approach is to read the entire file and filter out the unwanted content, such as the MG5 Proc card and warnings. Utilizing existing code can streamline this process, and resources like the LheAnalysis tool available on the CERN Twiki can provide helpful guidance and pre-existing solutions for handling .lhe files effectively.
CoronaBorealis
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Hello,

I have a .lhe file for the u u > u u interaction and i want to extract the initial and final values of momenta but i don't know how. I could write a c++ program and insert them in arrays but how to exclude all the rest (MG5 Proc card, warnings etc) ?

sorry for any language mistakes
 
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CoronaBorealis said:
Hello,

I have a .lhe file for the u u > u u interaction and i want to extract the initial and final values of momenta but i don't know how. I could write a c++ program and insert them in arrays but how to exclude all the rest (MG5 Proc card, warnings etc) ?

sorry for any language mistakes
Read in everything in the file and only keep what you want; that's the normal way of doing such things. You might ever be able to find on-line code that already has everything to read the file.
 
maybe if you search for the LheAnalysis tool in the CERN Twiki it can help you?
 
phinds said:
Read in everything in the file and only keep what you want; that's the normal way of doing such things. You might ever be able to find on-line code that already has everything to read the file.
I see.. Thank you !

ChrisVer said:
maybe if you search for the LheAnalysis tool in the CERN Twiki it can help you?
I didn't have a clue about it, thanks a lot!
 
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