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Monte Carlo Validation

Goal

To write a package to do streamline Monte Carlo Validation. Action items:

  • Things to check for top:
    • W(qq) inv mass
    • W(lnu) inv mass distinguishing the three possible flavors
    • top (qqq) inv mass
    • top (qlnu) inv mass
    • dN/dn_genjet
    • 1st and 2nd associated jet pT and eta
    • branching ratio of ttbar decays (had vs semilep) vs ttbar

  • Things to check for Z and W
    • All similar, except the top mass of course.

Users

Procedures

Test files

ttbar+1j

CVS

The code is structured as an EDAnalyzer, located at the SPRACE CVS repository.

  • Set up CVS:
export CVSROOT=/hdacs/shared/cvsrepository

  • Check out the code - make sure to be inside a directory CMSSW_X_Y_Z/src/SomeAnalyzer beforehand!
cvs co ValidationAnalyzer

  • Check in the code after making changes.
cd CMSSW_X_Y_Z/src/SomeAnalyzer cvs ci ValidationAnalyzer

Links

Log da Flavia

  • To reconstruct t and tbar, I located the vertice that have a t (tbar) ingoing, and took the outgoing particles of the vertices. However, some of these top vertices got also other particles than the W and b: uubar, gluon. I've (under Thiago advice) just ignored it and tried to reconstruct the top mass with just W's and b's. Solved: status 2 particles.

  • Status stuff - status 2 particles for showering.

  • To compile with TFileService, take care to put the lines in the BuildFile in the right place (lines above, not below).

  • Successfully reconstructed invariant mass of the W's from hadronic and leptonic decays.

-- ThiagoTomei - 27 Jan 2009 -- FlaviaDias - 28 Jan 2009

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Topic revision: r4 - 2009-01-28 - FlaviaDias
 

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