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 (WW qqqq) with Common N-tuples v1.3

 (WW qqqq) with Common N-tuples v1.3. first look. Tried 4f cc03 weights: high cc03 cross-section obtained used cc03 files bkg: Kqq files + KZZ (or PZZ when KZZ not available) first look: 1999 results look strange bug? (NN training choice may be messy)

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 (WW qqqq) with Common N-tuples v1.3

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  1. (WWqqqq) with Common N-tuples v1.3 first look Franco Ligabue

  2. Tried 4fcc03 weights: high cc03 cross-section obtained used cc03 files bkg: Kqq files + KZZ (or PZZ when KZZ not available) first look: 1999 results look strange bug? (NN training choice may be messy) stat. Errors OK (at least!) 2000 results look OK a bit lower than before: MC 4f X-section higher MC cc3 X-section lower Franco Ligabue

  3. At 207 GeV: higher 4f X-section Franco Ligabue

  4. for 1999: Different signal shape check NN training actually used Franco Ligabue

  5. 207 GeV old new Franco Ligabue

  6. First results compared to old ones ZZ MC KZZ KZZ KZZ PZZ KZZ KZZ PZZ PZZ Old MC v1.2 183 189 192 196 200 202 205 207 Old MC v1.2 7.35±0.42 6.83±0.23 8.60±0.61 7.42±0.35 7.30±0.33 6.94±0.48 7.67±0.35 7.72±0.27 Old MC v1.3 7.52±0.41 6.87±0.23 New MC 4f weights 7.95±0.43 7.23±0.23 8.96±0.64 7.49±0.36 7.95±0.35 7.45±0.49 7.78±0.36 7.68±0.28 New MC cc03 files 7.36±0.41 7.73±0.23 8.52±0.61 7.10±0.35 7.55±0.33 7.12±0.48 7.49±0.35 7.39±0.27 Franco Ligabue

  7. s4f (pb) scc03 (pb) Old MC v1.2 183 189 192 196 200 202 205 207 Old MC 16.01 16.92 17.59 17.81 17.89 17.97 18.00 New MC 17.01 18.10 18.43 18.80 19.05 19.14 19.26 19.28 Old MC 15.73 16.56 17.19 17.38 17.47 17.51 17.53 New MC 15.60 16.58 16.84 17.15 17.32 17.41 17.49 17.51 New MC cc3 weights 16.52 17.34 17.82 Franco Ligabue

  8. Still (a lot) to do: • Recheck everything, especially 1999 • wait for right 4f X-sections/weights • 1st bin saga: • 1) take it out for good • 2) try removing events with zero-mass jets? • Rediscuss systematic procedures, especially for qq bkg (and apply them) • …work… • USE PYTHIA ZZ!! (after Brigitte’s comment) Franco Ligabue

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