Penguins in B decays

Details Penguins in B decays Penguins in B decays

2001-10-24

arxiv.org/abs/hep-ph/0110316v2

AIP Conf.Proc.618:256-265,2002

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, invited talk at the Ninth International Symposium on Heavy Flavor Physics, Caltech, Pasadena, CA, Sept. 2001

Scientific paper

10.1063/1.1478844

We report on recent progress in studying two aspects of $B$ physics, in which penguin amplitudes play an important role: (1) Bounds on penguin pollution in $B^0(t) \to \pi^+\pi^-$ constraining CKM parameters, and a lower bound on $B^0 \to \pi^0\pi^0$ improving precision in $\sin 2\alpha$. (2) A suggestion for measuring the photon polarization in electroweak penguin decay, $B \to K_1(1400)\gamma$, providing a precision test of the Standard Model and a probe for new physics.

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