Charm Sample Based on “SatoMurat Selection” Umut Kose.

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Presentation transcript:

Charm Sample Based on “SatoMurat Selection” Umut Kose

Scanning Results I 32B 32T 35B 35T Total CC Selected Charm ry e-pair Bg Stack 3 Charm & Physical Bg.= 89 (~%94) Sel. Inefficiency = 5 (~%5) Charm/CC = 2.29 %

Scanning Results II 62B 62T 65B Total CC Selected Charm ry e-pair Bg Stack 6 Charm & Physical Bg.= 115 (~%88) Sel. Inefficiency = 16 (~%12) Charm/CC = 3.46 %

Stack 6Stack 3 Momentum Distributions P  (>30GeV)/P  = 0.09 P  (>30GeV)/P  = 0.22

Decay Topologies Kink 31 Vee 71 Trident 43 4Vee 21 and 1 event with “D-zero 2ry interaction??” Secondary interactions Charged Neutral Ns/ Nh Ns/Nh

(a y,, a z ) C o = ( ) (a y,, a z ) C+ = ( ) Event

OUTLOOK Up to now, 5916 events have been analyzed with “Golden Selection” 226 events have been selected and visually inspected. 167 charm events, purity = %74 (%90) charm/CC = 2.8 % By the middle of summer manual scanning can be finished (based on one person).