Is There Still a B -> pi K Puzzle?

Details Is There Still a B -> pi K Puzzle? Is There Still a B -> pi K Puzzle?

2007-01-22

arxiv.org/abs/hep-ph/0701181v2

Phys.Lett.B653:249-253,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, revtex, no figures. References changed; analysis and conclusions unaltered

Scientific paper

10.1016/j.physletb.2007.08.001

We perform a fit to the 2006 B -> pi K data and show that there is a disagreement with the standard model. That is, the B -> pi K puzzle is still present. In fact, it has gotten worse than in earlier years. Assuming that one new-physics (NP) operator dominates, we show that a good fit is obtained only when the electroweak penguin amplitude is modified. The NP amplitude must be sizeable, with a large weak phase.

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