[Brahms-soft-l] like particle ratios at 63 GeV, y = 0

From: Djamel Ouerdane <ouerdane@nbi.dk>
Date: Sun Aug 15 2004 - 15:42:07 EDT
Hello,

I looked at the newly  made DSTs and evaluated the particle ratios at 
mid-rap for the 10% most central events :

data set : 90 A/B 350 (only for now)
BB vtx < 15cm
Cent [0, 10]
track vertex consistency : < 3 sigma dZ, dY

I tried pol A / polB and polB / polA -> no difference.

Results :

pi- / pi+  = 1.0  +- 0.01 (stat) no pt dep.
K-  / K+   = 0.76 +- 0.04 (stat) no pt dep
Pb  / p    = 0.43 +- 0.03 (stat) no pt dep

I will continue investigating the data. 

Ciao
Djam


-- 
Djamel Ouerdane ------------------------------------------o
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Received on Sun Aug 15 15:45:36 2004

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