1. First results on 6M training sample and Bs->mumu analisys F. Crescioli, M. Dell'Orso, P. Giannetti, G. Punzi, G. Volpi

2. 23/01/2007Francesco Crescioli2 Sample and programs Training sample 6M evts by Erik (12.0.31) Bs->mumu sample 27k evts by Erik (12.0.31) All samples with ATLAS-CSC-01-02-00 geom ftksim with RW and HW enabled, variable plane layout  Old plane conf: 2 Pixel Layers (1 st and 2 nd ) - 4 SCT Layers  New plane conf: 3 Pixels Layers - 3 SCT Layers (1 st, 3 rd, 4 th ) ftksim_comp (matching program) with loose match requirements for phi and ctheta

3. 23/01/2007Francesco Crescioli3 Training results ~61k sectors with constants ~160k patterns per bank (8 banks) Overall efficiency ~50% (computed on bs->mumu sample) Checks on training gives results similar to v10, BUT:  Better impact parameter 5/6 resolution with 3 Pixel 3 SCTs layer setup  Sligth asymmetry on resolution shapes (expecially ctheta) in 5/6 mode. To be investigated.

4. 23/01/2007Francesco Crescioli4 Bs->mumu fake analisys - cuts Asym in ctheta distance. To be investigated. Distance from the nearest truth. Log scale. Cphi ctheta z0

5. 23/01/2007Francesco Crescioli5 Bs->mumu fake analisys - chi2 Old layer configuration New layer configuration

6. 23/01/2007Francesco Crescioli6 Bs->mumu fake analisys impact param distribution Old Layer configuration New Layer configuration

7. 23/01/2007Francesco Crescioli7 Bs->mumu fake analisys impact param distribution (mu) Old Layer configuration New Layer configuration

8. 23/01/2007Francesco Crescioli8 Bs->mumu fake analisys impact param resolution Old Layer configuration New Layer configuration

9. 23/01/2007Francesco Crescioli9 Bs->mumu fake analisys impact param  /non-  (good) Old Layer configuration New Layer configuration

10. 23/01/2007Francesco Crescioli10 Bs->mumu fake analisys impact param  /non-  (fake) Old Layer configuration New Layer configuration

11. 23/01/2007Francesco Crescioli11 Truth problems? Bs->mumu sample: some tracks have vertex exactly (0,0,0) in the truth  Mostly pi and protons, never muons Training sample: no tracks have exactly (0,0,0) Precision problem? jobOption problem? Is it a problem?

12. 23/01/2007Francesco Crescioli12 Bs->mumu fake analisys impact param distribution (no 0) All tracks. New Layer configuration Non zero impact parameter. New Layer configuration IP distribution is larger, because it's rich in muons

13. 23/01/2007Francesco Crescioli13 Bs->mumu fake analisys impact param resolution (no 0) All tracks New plane configuration Non zero impact parameter New plane configuration Resolution are slightly better with the non-zero impact parameter sample

14. 23/01/2007Francesco Crescioli14 Good/Fake missplane distr Old plane configuration New plane configuration

15. 23/01/2007Francesco Crescioli15 Conclusion Version 12.0.31 training data seems ok First results on Bs->mumu sample highlight improvement with new plane configuration Fake tracks are now mostly real tracks with few parameters reconstructed bad  Impact parameter seems to be better measured We should repeat analisys on Wuu/Wbb sample Investigate minor strange things (zero impact parameter tracks, ctheta asymmetries,...)

16. 23/01/2007Francesco Crescioli16 BACKUP

17. 23/01/2007Francesco Crescioli17 Fake failed parameter distr Old plane configuration New plane configuration

18. 23/01/2007Francesco Crescioli18 Fake missplane/parameter distr Old plane configuration New plane configuration

19. 23/01/2007Francesco Crescioli19 Good/Ghost/Fake Old plane configuration New plane configuration