Cut Study

Signal represented by MC, real data represents background

Real Data: sample of 1k events for AuAu07 Prod2 btag

Monte Carlo: D0->K-pi+, 1 D0 per event, CuCu05 Geometry

Left plot: p_T(D0) < 1 GeV

Right plot: p_T(D0) >= 1 GeV

cos(Theta*) dustributions for full btag statistics (94K)

Red - ++ pairs

Green - -- pairs

Gray - +- pairs

Used cuts:
SVT + SSD ≥ 1
DCA btwn. tracks ≤ 0.3 cm
DCA D0 to PV ≤ 0.3 cm
Decay length ≤ 0.3 cm