We report evidence for the decay B 0→ π 0 π 0. The analysis is based on a data sample of
152× 10 6 BB¯ pairs collected at the Υ (4 S) resonance with the Belle detector at the KEKB …

The recent observation of Bd→ π0π0 at the B factories with a surprisingly large branching
ratio represents a challenge for theory, and complements the amazingly small Bd→ π+ π …

The measured B→ π π, π K branching ratios (BRs) exhibit puzzling patterns. We point out
that the B→ π π hierarchy can be nicely accommodated in the standard model (SM) through …

We note that in decays of the type B0→ P0P0X0, where P0 and X0 represent any CP
eigenstate spin-0 neutral particles, the final state is a CP eigenstate. We consider the …

We report improved measurements of branching fractions for B→ K π, π+ π−, π+ π 0, and KK
decays based on a data sample of 85.0 million BB pairs collected at the Υ (4 S) resonance …

The Standard Model constraints on α which can be derived from the B→ππ decays are
revisited in some depth. As experimental inputs, the B^0→π^+π^-, B^+→π^+π^0 decays …

Various rescattering sources are analyzed in the context of the SU (3) flavor symmetry. In
particular, the possibility to account for intermediate charm at the hadronic level in B to PP is …

Recent measurements of B0→ ππ decays reveal two features that are in conflict with
conventional calculations: the channel B 0 (B ̄ 0)→ π+ π− shows a large direct CP-violating …

The interplay of experiment and theory is explored in the context of current data on b and c
decay. Measurements of| V cb| and| V ub| are extracted from existing data. Conservative …

We study the determination of γ from CP-violating observables in B→ π+ π-and B→ ψ KS.
This determination requires theoretical input to one combination of hadronic parameters. We …