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Mass window and bining optimization

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  1. W Mass measurement in the tnqq channel D. BOUMEDIENE CEA Saclay • Mass window and bining optimization • Complete results for all the energies using the tnqq channel • Check of the reproducibility • Fragmentation systematic in the tnqq channel 22/01/2001 - ALEPH Week

  2. = 200 GeV Bining SG + Bck Mass window DMW (Expected) MeV/c2 55x4 + 5x2 315  3 72-90 50x4 + 5x2 316  3 60x4 + 6x2 311  3 70-97 70x4 + 8x2 308 4 70x6 + 8x2 304 4 Mass window and bining optimization Large mass window  More luminosity but additional Background (ZZ) 22/01/2001 - ALEPH Week

  3. = 200 GeV Bining SG + Bck Mass window DMW (Exp.) MeV/c2 50x5x5 + 2x1x1 70-97 µvqq 221  2 50x5x3 + 2x1x1 70-97 evqq 234  2 Possible on e,µnqq ? 22/01/2001 - ALEPH Week

  4. Results @ 196 GeV 22/01/2001 - ALEPH Week

  5. Mass plot @ 196 GeV 22/01/2001 - ALEPH Week

  6. Results @ 200 GeV 22/01/2001 - ALEPH Week

  7. + 0.443 MW= 80.755 - 0.421 Mass plot @ 200 GeV Fit to the data @ 192 GeV 22/01/2001 - ALEPH Week

  8. Results @ 202 GeV 22/01/2001 - ALEPH Week

  9. Results @ <205> GeV 22/01/2001 - ALEPH Week

  10. Mass plot @ <205> GeV 205 nn cut optimization 22/01/2001 - ALEPH Week

  11. Results @ <207> GeV 22/01/2001 - ALEPH Week

  12. Stability and reproducibility checks in the tnqq channel nn test test cut nn 22/01/2001 - ALEPH Week

  13. Fragmentation systematic in tnqq channel With the half of the MC stat.: DMW frag. = 12 ± 7 MeV/c2 22/01/2001 - ALEPH Week

  14. 22/01/2001 - ALEPH Week

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