1. Charm search in Napoli Purpose: evaluate the charm production cross-section Means: “golden” selection Starting data sample: Naples modules MC simulation for efficiency evaluation Perspectives of the analysis

2. Ishigaki meeting Golden (Sato-Murat) Selection Selection code installed in Napoli (TT hits not yet included) Napoli modules processed with the “Golden” selection (using CHORAL predictions so far) MODULELocatedSelectedMODULELocatedSelected 1708712287098526 1715631487168519 27089326770119930 2715241377154911 280471 (288)6780525 (320)10 28136157814729 Total CC: 7710 Selected: 171 (2.2%) Located: 1mu + multi-mu

3. Ishigaki meeting Golden Selection: manual scanning results MODULEcheckedKinkV2TridentV45-prong 273449710 773425931 28802000 781715200 36210540 874239600 Total17112402981 90 Charm candidates

4. Ishigaki meeting Flight lengthProngs Kink angle Vee opening angle Candidate events

5. Ishigaki meeting Golden Selection: manual scanning results Rejected events: double interactions 2ry e-pair charm decay out of fiducial volume 1ry passing through selected tracks not found Total 81 5 12 3 1 46 13 1 Physics B.G.

6. Ishigaki meeting Selection categories Data Golden 32 Silver 60 Par 0 Iso-mu 9 Bronz 0 SSt 70 TOT 171 old new golden 6 6 silver 8 8 par 0 3 iso 1 1 Bronz 0 0 sst 7 6 Test with new software on 170

7. Ishigaki meeting CHANT predictions Events with only the  as predicted track CHORAL: 9.2% CHANT (1ry): 23.3% Golden Selection: module 270 processed by using CHANT predictions: CC: 1025 Selected: 16 (1.6%) So far the golden selection uses all the tracks at the primary vertex (at most 200)

8. Ishigaki meeting Net-scan simulation MC data  EMUL & PRVT bank modified including vertex location simulation Empty volumes  1486 empty volumes in Napoli Sato-Murat selection (Windows) without TT hit simulation Reject different year tracks Reconnection New criteria for selection NO cluster NO TT-matched tracks

9. Ishigaki meeting Net-scan simulation efficiency = 30.9 ± 0.7 Starting sample: 8k  CC charm DIS MC events Location procedure (G.d.R and L.S.) implemented in the MC Located events (data-sets): 4693 (5173) Selected events: 1451

10. Ishigaki meeting Charm ID  D+D+ 23.5% D0D0 36.0% Ds +Ds + 28.5% c +c + 18.0% Net-scan simulation efficiency

11. Ishigaki meeting Net-scan simulation efficiency

12. Ishigaki meeting Conclusions Golden selection applied to all Napoli modules Efficiency evaluation (without TT hit simulation) New software to be processed with Chant predictions Include TT hits in the simulation Momentum measurement of all charm daughters in progress Outlooks