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Opened 7 years ago

Closed 7 years ago

#218 closed question (fixed)

Cut on leading/subleading lepton with massive leptons

Reported by: Frank Siegert Owned by: support@sherpa-mc.de
Priority: major Milestone:
Component: Unknown Version: 1.3.1
Keywords: Cc: michael.hance@cern.ch

Description

There is this example in the manual for using the universal selector to cut on the pT of only the hardest lepton in the event if leptons are treated as massless:

"PT" 90 50.0,E_CMS [PT_UP]

Obviously, this would also allow to cut differently on the leading/subleading lepton.

Is it somehow possible to do the same for massive leptons, where I can't use the 90 container anymore?

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Change History (2)

comment:1 Changed 7 years ago by Frank Siegert

It seems to be possible to define a particle container and use that in the selector section (even despite the different masses):

(run){
  ...
  PARTICLE_CONTAINER 991 leptons 11 -11 13 -13 15 -15;
}(run)

...

(selector){
  Mass  11 -11  0.1  E_CMS                                                                                                                                                                                  
  "PT" 991 12.0,E_CMS:5.0,E_CMS [PT_UP]
}(selector)

Now, given the new more complicated syntax in https://projects.hepforge.org/sherpa/trac/ticket/208 for particle containers with different masses, I wonder whether this simple solution for the selector in 1.3.1 will have any problems that I'm missing?

comment:2 Changed 7 years ago by Frank Siegert

Resolution: fixed
Status: newclosed

Apparently there is no problem... at least with a quick ME level analysis the cuts are exactly where I expect them to be even for different flavour combinations. Marking as fixed.

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as closed The owner will remain support@sherpa-mc.de.

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