ar X iv : h ep - p h / 02 09 33 2 v 1 2 7 Se p 20 02 1 K → ππ Electroweak Penguins in the Chiral Limit

ar X iv : h ep - p h / 02 09 28 9 v 1 2 4 Se p 20 02 DISPERSIVE TREATMENT OF K → ππ

We discuss a new method to treat the K → ππ amplitude dispersively, taking into full account the effects of final state interatcions. Our approach is based on a set of dispersion relations for the K → ππ amplitude, in which the weak Hamiltonian carries momentum. In these dispersion relations two subtraction constants have to be introduced, whereby one can be related via a soft pion theorem to t...

ar X iv : h ep - l at / 0 20 91 08 v 1 1 1 Se p 20 02 1 K → ππ Decay Amplitude on the Lattice

Recent theoretical and numerical progresses of the lattice calculations of K → ππ decay amplitude are reviewed.

ar X iv : h ep - p h / 02 09 34 6 v 1 2 8 Se p 20 02 B → ργ Decay in the Large Energy Effective Theory

ar X iv : h ep - p h / 02 09 08 9 v 1 9 S ep 2 00 2 1 Matching the Electroweak Penguins Q 7 and Q 8

The constant C was defined in [1], F0 is the pion decay constant in the chiral limit, Q is a 3 × 3 matrix collecting the three light quarks electric charges and U = exp(i √ 2Φ/F0) with Φ a 3 × 3 matrix collecting the octet pion, kaon, and eta pseudo-scalar boson fields. In the Standard Model, there are just two operators contributing to Im(eGE); namely, the socalled electroweak penguins, Q7 and...

ar X iv : h ep - e x / 02 09 04 3 v 1 1 8 Se p 20 02 1 Elementary Hadronic Interactions at the CERN SPS