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ME-MC comparison. Standard Inputs so far ALPGEN GRAPPA MadGraph Generated processes ALPGEN (xs by mlm) W ,Z,DY + nj, n=0..5 Wbb,Zbb,DYbb + nj, n=0..3 GRAPPA W,Z + nj, n=0..2 W+3j available, xs by S. Tsuno Wbb + 0j, xs by S. Tsuno MadGraph W,Z + nj, n=0..3 Wbb,Zbb + nj, n=0..1.

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Me mc comparison
ME-MC comparison

  • Standard Inputs so far

    • ALPGEN

    • GRAPPA

    • MadGraph

  • Generated processes

    • ALPGEN (xs by mlm)

      • W,Z,DY + nj, n=0..5

      • Wbb,Zbb,DYbb + nj, n=0..3

    • GRAPPA

      • W,Z + nj, n=0..2

      • W+3j available, xs by S. Tsuno

      • Wbb + 0j, xs by S. Tsuno

    • MadGraph

      • W,Z + nj, n=0..3

      • Wbb,Zbb + nj, n=0..1


Summary of results
Summary of Results

  • W+n jets

    • MG<AL by (0.5,3,5,6) % n=0..3

    • GR & AL agree

  • Z+n jets

    • Everything ~OK

  • Wbb+n jets

    • MG>AL by (6, 2) % n=0..1

    • GR & AL agree for n=0

  • Zbb+n jets

    • MG>AL by (8, 6) % n=0..1


Conclusions
Conclusions

  • Need to understand differences between ME-MCs

    • Study relative fractions by subprocesses

    • Compare kinematic distributions

    • Communication with authors

  • Work in progress

    • Generate remaining processes

    • CompHEP tunning

    • Shower -> Ntuples->kinematic distributions

    • Get NLO rates from MCFM


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