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Changes between Version 38 and Version 39 of HowToAddSample


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Timestamp:
Jan 6, 2017, 2:01:43 PM (7 years ago)
Author:
Clarence Wret
Comment:

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  • HowToAddSample

    v38 v39  
    198198{{{
    199199#!div class=important
    200 If the cross-section is not in cm^2^/nucleon but instead cm^2^/CH (or any other molecule) you will have to scale the `fScaleFactor` by the number of available target nucleons. For CCQE, nu,,mu,, interactions only occur off neutrons, which we have 6 of in CH. But the total number of nucleons in CH is 13. So if an experiment reports cross-section in cm^2^/CH we need to do `fScaleFactor*=13./6.`.
     200If the cross-section is not in cm^2^/nucleon but instead cm^2^/CH (or any other molecule) you will have to scale the `fScaleFactor` by the number of available target nucleons.
     201
     202For CCQE, nu,,mu,, interactions only occur off neutrons, which we have 6 of in CH. But the total number of nucleons in CH is 13. So if an experiment reports their cross-section in cm^2^/CH for CCQE nu,,mu,, and our generator output is cm^2^/nucleon we need to do `fScaleFactor*=13./6.`.
     203
     204If instead an experiment measures a CC1pi^+^ cross-section in `cm^2^/CH`, we scale by a factor 13 because CC1pi^+^ happens on both neutrons and protons.
    201205}}}
    202206