Hi,
our aim is to have the Vub-Partial BF analysis ready as a
publication for the summer conferences.
For the summer conferences we need to provide an abstract
by 10th of April. Here is a first version (a modified version
of what has been submitted last time):
Charmless semileptonic decays, B -> X_u l nu, are studied
in a sample of 232 million B Bbar decays recorded with the
BaBar detector, in events where the decay of the second
B meson is fully reconstructed. Inclusive charmless decays
are selected in kinematic regions where the dominant
background from semileptonic B decays to charm is reduced
by requirements on various kinematic variables from which
the partial branching fraction DeltaB(B -> X_u l nu) is
measured.
The CKM matrix element |V_{ub}| is extracted by using
theoretical calculations of phase space acceptances.
Theoretical uncertainties in this extrapolation are
reduced by using the inclusive b -> s gamma photon
spectrum and moments of the b -> c l nu lepton energy
and hadronic invariant mass.
Cheers,
Heiko
