Vub exclusive (CKM workshop)

1
Vub exclusive (CKM workshop)

• Many new measurements,
• agreement in general
• CLEO performed new
• analysis in bins of q2
• reducing FF dependence
• Mean of exclusive analyses
• starts to be systematically
• below the inclusive one
• Mentioned the recoil of fully
• B tags to minimize the
• systematic unc.
• Problems in averaging how
• can we quote and weight FF
• dependence?

2
Vub exclusive (CKM workshop)
We can reject theoretical models using the q2
distribution
3
Vub inclusive (CKM workshop)

• 4 new measurements based
• on Mx from B factories
• discussion about performing
• averages
• established common strategy
• between BaBar and Belle
• (both for experimental and
• theoretical uncertainties)
• not much time for discussion
• with theorists (close to zero
• actually)

4
Vub inclusive (CKM workshop)
Recoil of B? D l n in Belle
5
Vub inclusive (CKM workshop)

• Annealing method in Belle
• divide the event in two Bs, many combinations
• take the one with the highest prob. to be signal
  (using a PDF made by a combination of
  discriminating variables)

q2 gt 7 GeV2
MX lt 1.5 GeV
q2 GeV2
MX GeV