Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-05-30
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, revtex, no figures
Scientific paper
We show that the neglect of the $(V-A)\times (V+A)$ pieces of the electroweak penguin (EWP) amplitudes in the effective hamiltonian (the Wilson coefficients are very small) allows one to calculate the relative size of some tree and EWP diagrams in $B \to \pi \pi$ and $B\to \pi K$ decays. For both decay classes, tree and EWP amplitudes are related using only isospin. In $B\to \pi \pi$, the ratio $C/T$ is calculated using isospin alone; in $B\to \pi K$ it is found using flavor SU(3) symmetry. These results are obtained by computing explicitly all Wick contractions of all effective operators. Relations among these contractions are found using Fierz identities and final-state symmetry arguments.
No associations
LandOfFree
Relative Sizes of Diagrams in B -> pi pi, pi K Decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Relative Sizes of Diagrams in B -> pi pi, pi K Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Relative Sizes of Diagrams in B -> pi pi, pi K Decays will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-314838