MadAnalysis 5

query regarding invariant mass

Asked by nabanita ganguly

Hi,

I have a question regarding invariant mass calculation in madgraph5 - how one can select SFOS lepotn pair in madgraph. A similar question was asked here : https://answers.launchpad.net/madanalysis5/+question/272498. The solution that was given was to select N(l+ l-) >=1 and then plot as usual.

But suppose my sample consists both e(+/-) and mu(+/-). Then doesn't the condition N(l+ l-)>=1 include both (e+ e-) and (e+ mu-) combinations? How to ensure that only SF leptons are being considered?

Regards,
Nabanita

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Benjamin Fuks
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Best Benjamin Fuks (fuks) said : 		#1

Hi Nabanita,

You can type:
  select N(mu+ mu-)>=1 or N(e+ e-)>=1

This will do the job.

Cheers,

Benjamin

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nabanita ganguly (nabanita-rimpi) said : 		#2

Hi,
    It's clear now.Thank u .

Regards,
Nabanita