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Emulsion scanning in Napoli Status of net-scan data taking Overview and perspectives Giovanni De Lellis.

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Presentation on theme: "Emulsion scanning in Napoli Status of net-scan data taking Overview and perspectives Giovanni De Lellis."— Presentation transcript:

1 Emulsion scanning in Napoli Status of net-scan data taking Overview and perspectives Giovanni De Lellis

2 Net-scan data taking status Total number of data sets (events) from Phase I 17860 (14530) Analysed so far 17260 (14001) Bad alignment (<40 connected tracks) 2959 (2647) Bad fine alignment (rms <1  m) 713 (695) Good alignment 13598 (11384) (good-map data exported to CERN) 2959 mis-aligned data sets (17%) could be partially recovered by additional data taking

3 Located events at least one stopping track matching with TT Module 0µ0µ 1µ1µMulti- µallGood mapLoc./Good 170 86 84427957115582.9% 171 72 5471663575484.2 % 270 153 858351046127682.0 % 271 92 5002461680676.4 % 280 75 4502154666781.9 % 281 67 3491242849386.8% 770 144 1164351343160983.5 % 771 82 5361363182676.4 % 780 84 5081760979276.9 % 781 60 4611153260488.1% 870 214 948371199139985.7 % 871 157 6533284297786.2 % Total1286781828093841135882.6 %

4 Charm (Golden) selection 8kCC  171 events to manual scanning 90 charm candidates 1 double charm candidate in NC from our 0mu selection Oscillation (Sato’s 0  ) selection: 48 manually checked/1000 loc NC= 6050 loc CC 3White kink candidates: 61892265 N s = 4 N h = 2  kink = 0.132 FL = 530  m 63952320 N s = 6 N h = 0  kink = 0.033 FL = 540  m 67092884 N s = 8 N h = 11  kink = 0.103 FL = 2685  m One more WK candidate from Napoli selection: Pt = 43^{+18}_{-10} MeV/c Just started the momentum measurement of all charm daughters 1 double charm candidate in CC (from Sato’s selection)

5 Conclusions and overview Net-scan of 3 full modules (based on choral pred.) completed Location of one module (Utsunomiya) now to be net-scanned Charm studies with golden selection (90 charm candidates) Momentum measurement of all charm daughter tracks Oscillation analysis (3+1 candidates): momentum measurement by MCS for one candidate so far 2 double charm candidates (1 in NC and 1 in CC) Manual scanning to be completed


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