Delphes, lepton PTmin = 10 GeV, how to modify?

[Melissa]

Dear Developers,

I seem to have a problem with the lepton PT's, as they don't go lower then 10 GeV. I use the atlas default card, and I see no PT cut or efficiency -> 0 for lepton PT between 1 and 10 GeV. Which setting should I modify to allow for these low PT leptons? I am really sure they are in my .hep file. I have included 20 showered files for reference.

Cheers,
Melissa

[Melissa]

.hep and .log files after running madevent and pythia

[Alexandre Mertens]

Hello Melissa,

The efficiency to reconstruct Leptons is in the cards/delphes_card_ATLAS.tcl.
Here is the module for the muons:

#################
# Muon efficiency
#################

module Efficiency MuonEfficiency {
  set InputArray MuonMomentumSmearing/muons
  set OutputArray muons

  # set EfficiencyFormula {efficiency as a function of eta and pt}

  # efficiency formula for muons
  set EfficiencyFormula {                                      (pt <= 10.0) * (0.00) +
                                           (abs(eta) <= 1.5) * (pt > 10.0)  * (0.95) +
                         (abs(eta) > 1.5 && abs(eta) <= 2.7) * (pt > 10.0)  * (0.85) +
                         (abs(eta) > 2.7)                                   * (0.00)}
}

So, if you want to access lower pt muon, you can just change this formula.

Is it what you were looking for?