ar X iv : h ep - p h / 06 05 09 4 v 1 9 M ay 2 00 6 New physics in B → ππ and B → πK decays

ar X iv : h ep - p h / 06 05 09 4 v 2 1 7 M ay 2 00 6 New physics in B → ππ and B →

We perform a combined analysis of B → ππ and B → πK decays with the current experimental data. Assuming SU(3) flavor symmetry and no new physics contributions to the topological amplitudes, we demonstrate that the conventional parametrization in the Standard Model (SM) does not describe the data very well, in contrast with a similar analysis based on the earlier data. It is also shown that the ...

ar X iv : h ep - p h / 06 05 13 6 v 1 1 1 M ay 2 00 6 Lepton Flavor Violating τ and μ decays

ar X iv : h ep - p h / 05 08 07 9 v 2 1 1 O ct 2 00 5 Revisiting B → ππ , πK Decays in QCD Factorization Approach

Motivated by the recent experimental data, we have revisited the B → πK, ππ decays in the framework of QCD factorization, with inclusion of the important strong penguin corrections of order αs induced by b → Dg∗g∗ (D = d or s and g∗ denotes an off-shell gluon) transitions. We find that these higher order strong penguin contributions can provide ∼ 30% enhancement to the penguin-dominated B → πK ...

ar X iv : h ep - p h / 05 08 07 9 v 1 5 A ug 2 00 5 Revisiting B → ππ , πK Decays in QCD Factorization Approach

Motivated by the recent experimental data, we have revisited the B → πK, ππ decays in the framework of QCD factorization, with inclusion of the important strong penguin corrections of order αs induced by b → Dg∗g∗ (D = d or s) transitions. We find that these higher order strong penguin contributions can provide∼ 30% enhancement to the penguindominated B → πK decay rates, and such an enhancement...

ar X iv : h ep - p h / 05 03 09 1 v 2 1 1 M ar 2 00 5 Possibility of Large EW Penguin contribution 1

We discuss a possibility of large electroweak (EW) penguin contribution in B → Kπ and ππ. The recent experimental data may be still suggesting that there are some discrepancies between the data and theoretical estimations. In B → Kπ decays, to explain several theoretical relations among the branching ratios, a slightly large electroweak penguin contribution and large strong phase differences or...