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Opened 9 years ago

Last modified 9 years ago

#835 new How to

Etmiss calculated with jets after pile-up suppression?

Reported by: Marianna Testa Owned by:
Priority: minor Milestone:
Component: Delphes code Version: Delphes 3
Keywords: Cc: caterina.doglioni@…

Description

Dear Experts,
is it possible to configure the delphes card so that Etmiss is calculated
using the jets after the pile-up suppression?
Cheers,
Marianna.

Change History (3)

comment:1 by Michele Selvaggi, 9 years ago

Yes it is easy to do. Be aware that the MET will then depend a lot on the pT threshold you use for counting jets.
Let's say the jet collection after pile-up suppression is "JetPileUpSubtractor/jets" then compute the MissingET as :

module Merger MissingET {
  add InputArray JetPileUpSubtractor/jets
  set MomentumOutputArray momentum
}

Michele

comment:2 by Marianna Testa, 9 years ago

Hi Michele,
thanks.
In this way the electrons and photons are already counted, right?
Cheers,
Marianna.

comment:3 by Michele Selvaggi, 9 years ago

Yes, if you use EFlowCandidates as input for jets (which is the default in principle unless you changed something).

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