Implications of CP Asymmetry Limits for $B \to K \pi$ and $B \to \pi \pi$

Michael Gronau; Jonathan L. Rosner

doi:10.1103/PhysRevD.65.013004 10.1103/PhysRevD.65.079901

Implications of CP Asymmetry Limits for $B \to K \pi$ and $B \to \pi \pi$

High Energy Physics - Phenomenology 2014-11-17 v2

Authors: Michael Gronau , Jonathan L. Rosner

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Abstract

Recent experimental limits for the direct CP asymmetries in $B^0 \to K^+ \pi^-$ , $B^+ \to K^+ \pi^0$ , $B^+ \to K^0 \pi^+$ , and $B^0 \to \pi^+ \pi^-$ , and for the indirect CP asymmetry in $B^0 \to \pi^+ \pi^-$ , are combined with information on CP-averaged branching ratios to shed light on weak and strong phases. At present such bounds favor $\gamma \ge 60^\circ$ at the $1 \sigma$ level. The prospects for further improvements are discussed.

Keywords

CP asymmetry B decays K pi pi pi weak phases strong phases CKM angle gamma

Cite

@article{arxiv.hep-ph/0109238,
  title  = {Implications of CP Asymmetry Limits for $B \to K \pi$ and $B \to \pi \pi$},
  author = {Michael Gronau and Jonathan L. Rosner},
  journal= {arXiv preprint arXiv:hep-ph/0109238},
  year   = {2014}
}

Comments

16 pages, LaTeX, 3 figures, revised version to be published in Phys. Rev. D. References added and updated

Implications of CP Asymmetry Limits for $B \to K \pi$ and $B \to \pi \pi$

Abstract

Keywords

Cite

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