MadAnalysis 5

cut on dilepton invariant mass

Asked by Rakhi Mahbubani

Hi Benjamin,

I'm trying to get rid ofonshell Z bosons in my sample by placing a cut on the dilepton invariant mass, and I'm getting an error message saying "WARNING: sorry but the possibility to apply a cut on a combination of particles is not still implemented in MadAnalysis 5." Is this also true for expert mode? If not, can you give me some tips on implementing this?

Thanks for all your help, and sorry for the flood of questions!

Rakhi

Question information

Language:
English Edit question
Status:
Solved
For:
MadAnalysis 5 Edit question
Assignee:
Benjamin Fuks Edit question
Solved by:
Rakhi Mahbubani
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Last reply:
Revision history for this message
Benjamin Fuks (fuks) said : 		#1

Hi Rakhi,

Could you copy the syntax you are using. The problem indeed arises in some very specific cases.

Cheers,

Benjamin

Revision history for this message
Rakhi Mahbubani (r-mahbubani) said : 		#2

sure: I tried a number of different things since I haven't been able to find a working example of this sort of use of invariant masses, but the last thing I tried was this:

select (l) M > 15
select (l) 81 < M < 101

where l is a multiparticle defined to include l+ and l-

Sorry for the delay in replying but launchpad email have now starting going into my spam folder! Will fix that asap.

Cheers,

Rakhi

Revision history for this message
Rakhi Mahbubani (r-mahbubani) said : 		#3

Hi Benjamin,

thanks, but I just got it working using
select M(l+ l-) > 15
select 81 < M(l+ l-) < 101

Sorry for the trouble,

Rakhi