MET distributions changing for some processes, but not others

Dear Emma,

I guess that you are confusing parton-level cut (before shower) and detector level cut.
At parton-level cut the missing ET is simply the sum of the momenta of the neutrino.
Since the tt~ and W+jets sample does not have any neutrino, you can not spit the parton level generation in various sample depending on the missing ET value.

Cheers,

Olivier

On 20 Dec 2014, at 15:41, Emma Castiglia <email address hidden> wrote:

> New question #259308 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/259308
>
> I am using MadGraph5_v1_5_14 and Delphes 3 to create tag_1_delphes_events.root files for three processes:
> -Z boson plus neutrinos
> process card: generate p p > z j, z > vl vl~
> add process p p > z j j, z > vl vl~
> add process p p > z j j j, z > vl vl~
> -ttbar
> process card: generate p p > t t~
> -W boson plus jets
> process card: generate p p > w+ j j
> add process p p > w+ j j j
> add process p p > w+ j j j j
> add process p p > w- j j
> add process p p > w- j j j
> add process p p > w- j j j j
>
> I am trying to create sample files that range over varying values of Missing Energy. I am making files for 0-100 GeV, 100-500 GeV, 500-800 GeV and 800-1000GeV. In the run_card I changed misset and missetmax values before I generated each file of events. When looking at the MET distributions in the completed process files, Z boson plus neutrinos displayed the correct varying MET distribution, but the distributions for W boson plus jets and ttbar were unchanged. The run_01_tag_banner.txt for each run showed the changing MET range, but the tag_1_delphes_events.root file distribution of MET did not.
>
> Does anyone know why the MET distribution is not changing for W plus jets and ttbar? Thank you.
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.