Sti Stv evaluation 2013

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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%

dPt, dTanL, dPsi versus P

Comparable

Hits per track

Not clear

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

Hits/track, Eta,Psi,Pt dependency results

Hits Quality

Average quality is same

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

Hits Quality dependency results

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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