Preliminary fitting results                                                                        Kenji Hamano

Last modified : Jun 06, 2006                                              Back to Home Back to privious page

R16b skims Run3 was used.
Data luminosities:
luminosity# events# files
OnPeak30.630 fb-117527801/438622047877
OffPeak2.394659867/3145110033

MC luminosity
MC modecross section# eventsLuminosity# files
BpBm (1235)0.525e6 fb23854196/86492000164.751193
B0B0bar (1237)0.525e617081965/61158000116.49855
ccbar (1005)1.30e66127861/5770000044.385307
uds (998)2.09e6 5639210/12404000059.349282
tautau (3429)0.94e6544465/6985200074.31128


Bhabha veto is applied.
KMicroNotPionGTL is applied.
FitDprob > 0.01 and FitBprob > 0.01 are applied.
Thrust cut |cosDlnonDl| < 0.88 is applied

This fitting was performed with constraints:
t_0+ = 1/1.086;


Validation of fitting

Split Run3 MC into two. Create simulated Data from the first half of Run3 MC. Create MC histograms from the second half of the Run3 MC. Fit the simulated data by the MC histograms.

Result is here
Number of bins = 190, number of parameters = 18, number of dof = 190 - 18 = 172.
Branching fractionsSP5/SP6Fitted BR
B->Dlnu 0.02100.0211319 +- 0.000622192 (2.94433 %)
B->D*lnu0.05600.0556417 +- 0.000865828 (1.55608 %)
B->D0*lnu0.00200.00133243 +- 0.00201181 (150.988 %)
B->D1lnu0.00560.00430804 +- 0.00292739 (67.9518 %)
B->D1'lnu0.00370.00426085 +- 0.00233633 (54.8324 %)
B->D2*lnu0.00370.00432451 +- 0.00274486 (63.4721 %)
B->DPi+lnu0.00600.00628595 +- 0.00108381 (17.2417 %)
B->DPi0lnu0.00300.00314298
B->D*Pi+lnu0.00200.00238112 +- 0.00109069 (45.8059 %)
B->D*Pi0lnu0.00100.00119056
Sum0.10400.1040
FF slopen/an/a
Uncorr(D0)11.01646 +- 0.0466781 (4.59224 %)
Casc L(D0)10.947656 +- 0.0610329 (6.4404 %)
Fake L(D0)11.14983 +- 0.224113 (19.491 %)
Cont D(D0)10.871979 +- 0.0520597 (5.9703 %)
Uncorr(D+)11.11892 +- 0.108134 (9.66419 %)
Casc L(D+)10.956743 +- 0.132486 (13.8477 %)
Fake L(D+)10.909878 +- 0.469359 (51.5849 %)
Cont D(D+)11.01839 +- 0.124872 (12.2617 %)
f_+0 10.996935 +- 0.0267277 (2.68098 %)
c_D+010.974934 +- 0.0225951 (2.31761 %)
Chi-square202.985170.001


Branching fraction of B->Dlnu : consistent with SP5/SP6.
Branching fraction of B->D*lnu : consistent with SP5/SP6.
Branching fraction of B->D0*lnu : consistent
Branching fraction of B->D1lnu : consistent
Branching fraction of B->D1'lnu : consistent
Branching fraction of B->D2*lnu : consistent
Branching fraction of B->DPilnu : consistent
Branching fraction of B->D*Pilnu: consistent
Backgrounds are
   Uncorr(D0) : consistent
   Casc L(D0) : consistent
   Fake L(D0) : consistent
   Cont D(D0) : 2.46 sigma off
   Uncorr(D+) : consistent
   Casc L(D+) : consistent
   Fake L(D+) : consistent
   Cont D(D+) : consistent
Ratios are
   f_+0 : 1.01 sigma off
   c_D+0 : consistent


Plots before fitting
Numbers are here
The bins which give larger chi-sq numbers correspond to the bins in which the fake-data MC difference is big.
For example
   D0 : (0,4,3),(0,5,4),(1,4,1),(2,3,2),(2,3,3),(2,3,4),(2,4,1),(3,0,3),(3,2,4),(3,3,3),(3,4,2)
   Dch : (0,1,2),(0,4,2),(1,2,2),(2,3,2)

D0KPi mode
Lepton momentum (D0KPi)
Lepton momentum : bin by bin (D0KPi)
D momentum (D0KPi)
D momentum : bin by bin (D0KPi)
cosBY (D0KPi)
cosBY : bin by bin (D0KPi)

DchKPiPi mode
Lepton momentum (DchKPiPi)
Lepton momentum : bin by bin (DchKPiPi)
D momentum (DchKPiPi)
D momentum : bin by bin (DchKPiPi)
cosBY (DchKPiPi)
cosBY : bin by bin (DchKPiPi)


Plots after fitting

D0KPi mode
Lepton momentum (D0KPi)
Lepton momentum : bin by bin (D0KPi)
D momentum (D0KPi)
D momentum : bin by bin (D0KPi)
cosBY (D0KPi)
cosBY : bin by bin (D0KPi)

DchKPiPi mode
Lepton momentum (DchKPiPi)
Lepton momentum : bin by bin (DchKPiPi)
D momentum (DchKPiPi)
D momentum : bin by bin (DchKPiPi)
cosBY (DchKPiPi)
cosBY : bin by bin (DchKPiPi)


Dlnu FF slope - new parameterization

To get stable fit results, fist fit was performed with a fixed slope value and then everything other than the slope was fixed in the seconf fit.
Result is here
Branching fractionsSP5/SP6Fitted BR
B->Dlnu 0.02100.0254225 +- 0.0007927 (3.11811 %)
B->D*lnu0.05600.0562571 +- 0.00114534 (2.0359 %)
B->D0*lnu0.00200.00786725 +- 0.00244939 (31.134 %)
B->D1lnu0.00560
B->D1'lnu0.00370.000626573 +- 0.00145816 (232.719 %)
B->D2*lnu0.00370.000968876 +- 0.00347829 (359.002 %)
B->DPi+lnu0.00600
B->DPi0lnu0.00600
B->D*Pi+lnu0.00200.00790515 +- 0.00100992 (12.7754 %)
B->D*Pi0lnu0.00200.00395257
Sum0.1040.103
FF slopen/a1.47292 +- 0.0123369 (0.837581 %)
Uncorr (D0)10.962483 +- 0.0495 (5.14295 %)
Casc L (D0)10.930998 +- 0.0617447 (6.63209 %)
Fake L (D0)10.228374 +- 0.248696 (108.899 %)
Cont D (D0)10.995462 +- 0.0526354 (5.28754 %)
Uncorr (Dch)10.707311 +- 0.115363 (16.31 %)
Casc L (Dch)10.753825 +- 0.132712 (17.6051 %)
Fake L (Dch)10.910783 +- 0.540717 (59.3684 %)
Cont D (Dch)11.17802 +- 0.121454 (10.31 %)
f_+0 11.04069 +- 0.0262576 (2.52311 %)
c_D+010.971755 +- 0.0233532 (2.40319 %)
Chi-square656.476296.092


D0KPi mode
Lepton momentum (D0KPi)
Lepton momentum : bin by bin (D0KPi)
D momentum (D0KPi)
D momentum : bin by bin (D0KPi)
cosBY (D0KPi)
cosBY : bin by bin (D0KPi)

DchKPiPi mode
Lepton momentum (DchKPiPi)
Lepton momentum : bin by bin (DchKPiPi)
D momentum (DchKPiPi)
D momentum : bin by bin (DchKPiPi)
cosBY (DchKPiPi)
cosBY : bin by bin (DchKPiPi)


B+ to D*lnu and B0 to D*lnu

Result is here