Validation

August 5-6 2009

How many muons should the muon detectors see ?

2000 events b=0

• I have counted the muons (with status=1) in the right pt and rapidity range for the DT and CSC.

1. DT
   • pt>4GeV/c && |eta|<1.2
   • number of muons seen by the DT: 50 muons
2. CSC
   • pt>3GeV/c && -2.4<eta<-0.8 && 0.8<eta<2.4
   • number of muons seen by the CSC: 100 muons

• Comment:

When embedding quarkonia into hydjet, the decayed muons have a pt spectra peaked almost at 2GeV/c, and droping less fast that those from the hydjet events. This is why one sees more muons in the muons detectors with those samples.

* pt spectrum of muons decayed from jpsi pgun:

<dflag_aug5-6>

August 23 2009

With right cut: cutting on p instead of pt:

• p>4Gev/c && |eta|<1.2: number of muons seen by the DT 110 muons
• number of muons that have p>5 GeV/c, and therefore can be reconstructed as STA muons in the DT = 55
• p>3GeV/c && -2.4<eta<-0.8 && 0.8<eta<2.4 : number of muons seen by the CSC 1012 muons