1. Charm Sample Based on “SatoMurat Selection” Umut Kose

2. Scanning Results I 32B 32T 35B 35T Total CC 857 1265 565 542 3229 Selected 23 42 16 14 95 Charm 20 32 12 10 74 2ry 2 5 2 1 10 e-pair 0 3 2 0 5 Bg 1 2 0 2 5 Stack 3 Charm & Physical Bg.= 89 (~%94) Sel. Inefficiency = 5 (~%5) Charm/CC = 2.29 %

3. Scanning Results II 62B 62T 65B Total CC 857 1265 565 2687 Selected 42 63 26 131 Charm 32 44 17 93 2ry 4 9 4 17 e-pair 2 2 1 5 Bg 4 8 4 16 Stack 6 Charm & Physical Bg.= 115 (~%88) Sel. Inefficiency = 16 (~%12) Charm/CC = 3.46 %

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

5. Decay Topologies Kink 31 Vee 71 Trident 43 4Vee 21 and 1 event with “D-zero 2ry interaction??” Secondary interactions Charged Neutral Ns/ Nh 01345691012 1111 1 11 2 1 3 1 11 4 1 5 1 6 1 8 2 Ns/Nh0123 3111 4 1 51

6. (a y,, a z ) C o = (-0.04 -0.05) (a y,, a z ) C+ = (0.037 0.101) Event 7603 1912

7. 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).