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Re: MisID vs Impurity [message #14234 is a reply to message #14231] Sat, 24 November 2012 21:29 Go to previous messageGo to previous message
Malgorzata Gumberidze is currently offline  Malgorzata Gumberidze
Messages: 99
Registered: June 2005
continuous participant
 From: *fbx.proxad.net
hello

please find here plot which is showing multiplicity of reconstructed tracks for one true MC electron track :

index.php?t=getfile&id=7207&private=0

and here are some numbers (number of primary electrons=972500):

mult ==0 : 83628
mult ==1 : 863344
mult ==2 : 24060
mult ==3 : 1116
mult ==4 : 239
mult ==5 : 64

and here is a plot for negative pions

index.php?t=getfile&id=7208&private=0

and numbers (number of primary pions = 986500):

mult ==0 : 110975
mult ==1 : 854022
mult ==2 : 20824
mult ==3 : 550
mult ==4 : 90
mult ==5 : 29
mult ==6 : 5

3% of the events has more than 1 particles reconstructed per MC track in both cases for electrons and pions. So in this way i would say that selection of one good track per MC true one does not introduce big bias.

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