Dataset

• Run 10, √s_NN = 39 GeV, Au+Au Collisions, ∼9.8M events good events analyzed

Event-cuts

	Event-Cut
Trigger-ID	280001
|Vz| (cm)	< 30
Vr (cm) (Vr = &#8730;Vx2+Vy2)	< 1

 

 

 

 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 

 

 

 

 

 

 

Centrality-cuts

Centrality determination taken from Hiroshi:
www.star.bnl.gov/protected/bulkcorr/hmasui/2010/centrality_39GeV_Aug09/hiroshi_centrality_AuAu39GeV_Run10_Aug10_2010.pdf

Centrality	RefMult-cut	No. of Events
0-10% most central	> 265	∼1.1M
10-40% most central	> 81 & < 265	&#8764;3.4M
40-80% most central	> 7 & < 81	&#8764;4.3M
0-80% most central	> 7	&#8764;8.8M

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Track-cuts

	Track-Cut
Selection of bad tracks	0
pseudorapidity |&#951;|	< 1.0
NHitsFit	> 20
NHitsFit/NHitsPoss	> 0.52
dca-Global (cm) (dca-Global = &#8730;dcaD2+dcaZ2)	< 2.0
|dcaD| (cm)	< 1.0
Event Plane via TPC, no pt-weights used
PID via TOF (still work in progress)	TOF: m2-cut

 

 

 

 

 

 

 

 

 

  

 

• 0-80% most central
• |&#951;| < 1.0 and Selection of bad tracks = 0 is used to generate the plots
• Asymmetry results due to non functional RDO's during the run
• More QA will come with studying the influence of track cuts to the different distributions

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Next Page:

Uncorrected p_t- and &#951;-spectra:

drupal.star.bnl.gov/STAR/blog/mcm/2010/aug/10/pt-and-eta-spectra-uncorrected-39-gev