Determination of the Phase of Vub from Charmless Hadronic B Decay Rates
Abstract
We perform a model dependent fit to recent data on charmless hadronic B decays and determine
γ
, the phase of
V
∗
ub
. We find
γ=
114
+25
−21
degrees, which disfavors the often quoted
γ∼
60
∘
at the two standard deviation level. We also fit for the form factors
F
Bπ
0
and
A
Bρ
0
, and the strange-quark mass. They are consistent with theoretical expectations, although
m
s
is somewhat low. Such agreement and the good
χ
2
for the fit may be interpreted as a confirmation of the adequacy of our model assumptions.