Cross Section meeting, 5 Nov 1999 Maria Girone1 Preliminary results on the WW fully leptonic cross section for the LEPC Maria Girone Imperial College.

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Presentation transcript:

Cross Section meeting, 5 Nov 1999 Maria Girone1 Preliminary results on the WW fully leptonic cross section for the LEPC Maria Girone Imperial College

Cross Section meeting, 5 Nov 1999 Maria Girone2 Selected events WW run selection: ±0.084 pb 192 GeV ±0.142 pb 196 GeV ±0.147 pb 200 GeV ±0.096 pb 202 GeV Selected events: 192 GeV 196 GeV 200 GeV 202 GeV All efficiencies and backgrounds have been calculated at the correct energy

Cross Section meeting, 5 Nov 1999 Maria Girone3 Selected events (cont’d)  e   ee  e

Cross Section meeting, 5 Nov 1999 Maria Girone4 Results  l l = 1.53±0.30(stat) 192 GeV (SM = 1.80)  l l = 1.76±0.20(stat) 196 GeV (SM = 1.83)  l l = 1.74±0.20(stat) 200 GeV (SM = 1.85)  l l = 1.62±0.29(stat) 202 GeV (SM = 1.86)

Cross Section meeting, 5 Nov 1999 Maria Girone5 Results (cont’d)  l l = 1.527±0.302(stat) 192 GeV    =  (stat) pb    e =  (stat) pb     =  (stat) pb  e e =  (stat) pb    =  (stat) pb  e   =  (stat) pb

Cross Section meeting, 5 Nov 1999 Maria Girone6 Results (cont’d)  l l = 1.758±0.196(stat) 196 GeV    =  (stat) pb    e =  (stat) pb     =  (stat) pb  e e =  (stat) pb    =  (stat) pb  e   =  (stat) pb

Cross Section meeting, 5 Nov 1999 Maria Girone7 Results (cont’d)  l l = 1.740±0.196(stat) 200 GeV    =  (stat) pb   e  =  (stat) pb   =  (stat) pb  e e =  (stat) pb    =  (stat) pb  e   =  (stat) pb

Cross Section meeting, 5 Nov 1999 Maria Girone8 Results (cont’d)  l l = 1.621±0.291(stat) 202 GeV    =  (stat) pb    e =  (stat) pb     =  (stat) pb  e e =  (stat) pb    =  (stat) pb  e   =  (stat) pb