Implications of CP Asymmetries in $B \to π^+ π^-$

Details Implications of CP Asymmetries in $B \to π^+ π^-$ Implications of CP Asymmetries in $B \to π^+ π^-$

2004-05-18

arxiv.org/abs/hep-ph/0405173v2

Phys.Lett. B595 (2004) 339-346

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 2 figures. To be submitted to Phys. Lett. B. Minor additions

Scientific paper

10.1016/j.physletb.2004.06.057

CP asymmetries in $B^0(t)\to \pi^+ \pi^-$ are studied by relating this process in broken flavor SU(3) with $B^+\to K^0\pi^+$ and $B^0\to K^+\pi^-$. Using two different scenarios for SU(3) breaking, we show that the range of values of the weak phase $\alpha$ permitted by the measured asymmetries overlaps with that obtained from other CKM constraints, supporting the KM origin of the asymmetries. We evaluate the potential precision of this method to improve the determination of $\alpha$.

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