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Status Report on f  h g  p + p - 7 g

Status Report on f  h g  p + p - 7 g. Last checks. Raw selected with filfo/par=1: TRK & VTX efficiency, data vs MC MC RAD’04 with T. & M. efficiency curve for clusters K r Mixing angle. TRK efficiency. Cut on clusters E clu <400 MeV

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Status Report on f  h g  p + p - 7 g

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  1. Status Report on f  hg  p+p- 7g

  2. Last checks • Raw selected with filfo/par=1: TRK & VTX efficiency, data vs MC • MC RAD’04 with T. & M. efficiency curve for clusters • Kr • Mixing angle

  3. TRK efficiency • Cut on clusters Eclu<400 MeV • 2 prompt neutral clusters qclu>25° & Eclu>50 MeV • |Mgg – Mp|<20 MeV • 2 clusters 0.8<b<0.95 & Eclu>100 MeV • one track qtrk>40° & 200MeV<Ptot<400 MeV  We look if there is a track in a cone of 35° around Pmiss

  4. TRK efficiency + MC + Data Background contamination at level of 1%

  5. TRK efficiency etrk(Data)/etrk(MC) = 0.992±0.003  1%

  6. VTX efficiency • Cut on clusters Eclu<400 MeV • 2 prompt neutral clusters qclu>25° & Eclu>50 MeV • 100MeV < Mgg < 170 MeV • two tracks qtrk>40° & 50MeV<Ptot<400MeV • 850 MeV<Etot<1200MeV  We look for a vertex as a function of the minimum momentum

  7. VTX efficiency + MC + Data Background contamination at level of 1.5%

  8. VTX efficiency evtx(Data)/evtx(MC) = 0.990±0.001  1%

  9. The factor Kr We study Kr vs s for the analyzed runs and take the mean value

  10. The factor Kr Kr =0.940.01  1%

  11. MC RAD’04 • New cluster efficiency curve (T.&M.)

  12. In summer conference we show: where BR” c2 VTX Bg Filfo-EVCL eh/eh' TRK

  13. Now we have: • No changes in systematic evaluation: 4% • Kr correction from 0.95 to 0.94 BR” Kr c2 VTX Bg Filfo-EVCL eh/eh' TRK

  14. Mixing angle • stat. uncertainty: mc extraction of R with Gaussian distribution • syst. unc.: mc extraction of R with flat distribution • th. unc.: difference between angle extractions using different values for parameters.

  15. Statistical uncertainty

  16. Systematic uncertainty

  17. Theoretical uncertainty • VP Wave function overlaps: ZNS=0.91±0.05; ZS=0.89±0.07; ZNS/ZS =1.02±0.10  ±10%  maximum variation P =±0.3º • ms/m= (1.24-1.45)  maximum variation P=±0.5º • Theo. unc. P=±0.6º

  18. Gluonic content

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