The approximate symmetries of Quantum ChromoDynamics in the infinite heavy quark (Q=
c, b) mass limit (mQ→∞) and in the chiral limit for the light quarks (mq→ 0, q= u, d, s) can be …

B mesons are bound states of ab quark and a light anti-quark. While the binding is provided
by the strong interaction B mesons can only decay by the weak interaction. Since the top …

We use QCD sum rules to calculate the hadronic matrix elements governing the rare decays
B→ K l+ l− and B→ K* l+ l− induced by the flavor-changing neutral current b→ s transition …

We describe all the form factors for semileptonic and radiative B decays to the same light
vector meson with just two parameters and the two form factors for semileptonic B decays to …

We present a unified method for analysing form factors in B→ πl ν land B→ K∗ γ decays.
The analysis provides consistency checks on the q2 and 1 M extrapolations necessary to …

In the heavy quark limit, the form factors for semileptonic and rare radiative B decays into
light mesons are related by heavy quark spin symmetry. Here we compute the leading …

We present results of a lattice computation of the vector and axial-vector current matrix
elements relevant for the semileptonic decay B 0→ ϱ+− v l. The computations are performed …

Status of weak matrix elements is reviewed. In particular, ε′/ε, B→ K* γ, BK, BB and BB, are
discussed and the overall situation with respect to the lattice effort and some of its …

Relationships between gauge, conformal and discrete symmetries in particle physics are
analysed. We study also the effect of the electroweak mixing on the cancellation of SU (2) …

Abstract The B→ K* γ branching fraction is predicted using heavy quark spin symmetry at
large recoil to relate the tensor and (axial-) vector form factors, using heavy quark flavor …