Hi all,
next check... I removed the kaon veto at all. The results are in the same
direction... almost
Q=0
---
All BRBR = 0.020486 +- 0.0048398(stat) +- 0.00141174(MC stat)
B0 BRBR = 0.00843454 +- 0.00786974(stat) +- 0.00232202(MC stat)
Bch BRBR = 0.0284635 +- 0.00617635(stat) +- 0.00195309(MC stat)
incredibly compatible results. Gap B0 Bch unchanged!!!
Q=1
---
here something happens
All BRBR = 0.0285778 +- 0.00541327(stat) +- 0.00159545(MC stat)
B0 BRBR = 0.0221152 +- 0.00878295(stat) +- 0.00263773(MC stat)
Bch BRBR = 0.0330851 +- 0.00687407(stat) +- 0.00206717(MC stat)
B0 shifts up. All too, as a consequence.
HERE the chi square
Q=0
---
All chisq = 1.26608
B0 chisq = 1.55029
Bch chisq = 2.47945
Q=1
---
All chisq = 2.30101
B0 chisq = 0.588285
Bch chisq = 3.1975
And the fits:
http://www.slac.stanford.edu/~daniele/vub/
Q0
dataB0FINALnokselefitresults_nocat.eps B0
dataBchFINALnokselefitresults_nocat.eps Bch
dataFINALnokselefitresults_nocat.eps All
Q1
datach101B0FINALnokselefitresults_nocat.eps B0
datach101BchFINALnokselefitresults_nocat.eps Bch
datach101FINALnokselefitresults_nocat.eps All
Bch for Q1 seems to be pretty bad. Looking at the chisquare and at the
plots Q0 seems to be better. The point is the usual one: which is the
sistematics that takes into account this effect?
- tracking
- actually, even if we have no kaon veto in, we could have still problems
of kaon ID since we are using it in reconstructing Mx.
What about removing at all kaon ID (always pion mass) and see what
happens?
Daniele
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