Constraining Charming Penguins in Charmless B Decays

Details Constraining Charming Penguins in Charmless B Decays Constraining Charming Penguins in Charmless B Decays

2007-12-18

arxiv.org/abs/0712.2889v2

J.Phys.G37:025006,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 6 figures, references added

Scientific paper

10.1088/0954-3899/37/2/025006

We discuss the correlations of charming penguin contributions to $B\to\pi\pi$, $\pi K$ and KK using approximate flavor SU(3) symmetry. Strong constraints are found from the direct CP asymmetries especially in $\pi K$ modes. We make a global fit to the latest data and find that only a small charming penguin is allowed, and the size of color-suppressed tree amplitude (C) relative to tree amplitudes (T) remains large $C/T\simeq0.6$, which disfavors the possibility of a large charming penguin as an explanation for the $\pi\pi$ puzzle. We show that a small charming penguin can still have sizable effect in the time-dependence CP asymmetries in KK mode.

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