new plots                                                                        Kenji Hamano

Last modified : Sep 13, 2005                                              Back to Home Back to privious page

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BToDlnu skims with tight K selection (KMicroNotPion)

D0 mass. Lep from same B or not

Fractional uncertainty of signal
Setting rho = 0
Counted only "Lep from same B" candidates as signal.

Tighter D mass peak region: 1.855 GeV < D mass < 1.875 GeV
BToDlnu skim
   nSig = 113898, nBkg = 434942, Delta_S/S = 6.504e-3
AddLep sub-skim
   nSig = 41327, nBkg = 155345, Delta_S/S = 10.731e-3


Dch mass. Lep from same B or not

Fractional uncertainty of signal

Tighter D mass peak region: 1.859 < D mass < 1.879
BToDlnu skim
   nSig = 67720, nBkg = 845526, Delta_S/S = 14.112e-3
AddLep sub-skim
   nSig = 23922, nBkg = 299177, Delta_S/S = 23.761e-3


Number of Dl candidates
nDl plots


D0->Kpi
New D0 mass plot (without bining)
New New D0 mass plot (without bining)
Number of Dl candidates in 1.845 < DMass < 1.885
   Signal : 108683, Background : 580542
  Components of signal
   Bp->Dlnu : 15005
   Bp->D*lnu : 46543
   Bp->D**lnu : 1186
   Bp->D/D*/D** Pilnu : 3035
   B0->Dlnu : 0
   B0->D*lnu : 36393
   B0->D**lnu : 1757
   B0->D/D*/D** Pilnu : 4764
This is for 25 fb-1 of data (MC). So, for each fb-1
   Signal : 4347 candidates, Background : 23221 candidates.
  Approximately
   Bp->Dlnu : 600
   Bp->D*lnu : 1862
   Bp->D**lnu : 47
   Bp->D/D*/D** Pilnu : 121
   B0->D*lnu : 1456
   B0->D**lnu : 70
   B0->D/D*/D** Pilnu : 190
Number of selected signal Dl candidates per event
nDl plot for selected signal Dl candidates
Average candidates per event is , the yield is
   Signal : events, Background : events.
Run1-4 data has 210 fb-1 of luminosity, so the expected yield is


Dch->Kpipi
New Dch mass plot (without bining)
Number of Dl candidates in 1.849 < DMass < 1.889
   Signal : 65447, Background : 1238637
  Components of signal
   Bp->Dlnu : 0
   Bp->D*lnu : 0
   Bp->D**lnu : 2107
   Bp->D/D*/D** Pilnu : 5999
   B0->Dlnu : 27469
   B0->D*lnu : 25876
   B0->D**lnu : 992
   B0->D/D*/D** Pilnu : 3004

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