ar X iv : h ep - p h / 05 12 35 6 v 1 2 8 D ec 2 00 5

ar X iv : h ep - p h / 05 12 21 6 v 1 1 6 D ec 2 00 5 QUANTIZATION AND HIGH ENERGY UNITARITY IN ORBIFOLD THEORIES

ar X iv : h ep - p h / 05 12 21 6 v 2 1 7 D ec 2 00 5 QUANTIZATION AND HIGH ENERGY UNITARITY IN ORBIFOLD THEORIES

ar X iv : h ep - p h / 05 12 10 1 v 1 8 D ec 2 00 5 Hard spectator - scattering in B → ππ decays at NNLO ∗

We compute the 1-loop (NNLO) corrections to hard spectator-scattering in tree-dominated hadronic B decays. Depending on the values of hadronic input parameters the corrections are shown to have a significant impact on the B → ππ branching fractions.

ar X iv : h ep - t h / 02 12 05 8 v 1 4 D ec 2 00 2 Dirac ’ s Magnetic Monopoles ( Again )

Dirac's quantization of magnetic monopole strength is derived without reference to a (singular, patched) vector potential.

ar X iv : h ep - t h / 02 12 31 5 v 1 2 6 D ec 2 00 2 The infrared R ∗ operation

We describe the infrared R-operation for subtraction of infrared divergencies in Feynman diagrams.

ar X iv : h ep - p h / 05 12 03 9 v 1 2 D ec 2 00 5 November 2005 Status of the Cabibbo Angle

We review the recent experimental and theoretical progress in the determination of |V ud | and |V us |, and the status of the most stringent test of CKM unitarity. Future prospects on |V cd | and |V cs | are also briefly discussed.