Sti Stv evaluation 2013

STAR

Sti Stv evaluation 2013

V. PerevoztchikovBrookhaven National Laboratory,USA

STAR Victor Perevoztchikov, BNL StarSoft local

Accuracy vertex

Comparable but Sti 6% better


Accuracy DCA

Comparable -4%


Accuracy Pt, tanL, Psi

dPt +3%, dTan -2% dPsi -1.5%


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dPt, dTanL, dPsi versus P

Comparable


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Hits per track

Not clear


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Hits/track, Eta,Psi,Pt dependency

Stv +3hits


Nhits in Stv +3 moreEta dependency is weird for bothEta is wider for StiIn Psi weird structure with 12 peaksStrange minimum, in Sti=0, in Stv=50 degreePt dependency more flat for Stv. For both Nhits decreased wirth Pt

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Hits/track, Eta,Psi,Pt dependency results


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Hits Quality

Average quality is same


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Hits Quality dependency


• Eta: Stv more flat, but Eta is more wide for Sti

• Psi, wide peaks for Stv(?) Only 3 peaks instead of 12(?)

• Pt is better for Stv

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Hits Quality dependency results

STAR

Victor Perevoztchikov, BNL StarSoft local

Efficiency, globals & primaries


Efficiency, globals & primaries. Results.

• Simulated tracks are slightly different (statistic?)

• Number of globals/event even is bigger in Sti than simulated(????)

• Efficiency for globals is much better in Sti

• Efficiency for primaries is for 11% better in Sti.


Good track efficiency


Good track efficiency. Results

• Good globals in Stv 1.5% less than in Sti;

• Good primaries in Stv 2.5% less;

• Split tracks in Stv 20% less


Simu tracks. Eta,Psi,Pt dependency

Psi dependency is DIFFERENT???!!!!


Global tracks. Eta,Psi,Pt dependency


Global tracks efficiency. Eta,Psi,Pt dependency

Sti Stv evaluation 2013

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