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Updated bounds on $C P$ asymmetries in $B^{0} \to η^{'} K_{S}$ and $B^{0} \to π^{0} K_{S}$

Michael Gronau^1,2, Jonathan L. Rosner³, and Zure Zupan⁴

¹Physics Department, Technion - Israel Institute of Technology 32000 Haifa, Israel
²Stanford Linear Accelerator Center, Stanford University Stanford, California 94309, USA
³Enrico Fermi Institute and Department of Physics, University of Chicago Chicago, Illinois 60637, USA
⁴Carnegie-Mellon University, Pittsburgh, Pennsylvania 15213, USA, and J. Stefan Institute, Jamova 39, P.O. Box 3000 1001 Ljubljana, Slovenia

Phys. Rev. D 74, 093003 – Published 8 November, 2006

DOI: https://doi.org/10.1103/PhysRevD.74.093003

Abstract

New rate measurements of $B^{0}$ decays into $π^{0} π^{0}$ , $π^{0} η$ , $π^{0} η^{'}$ , $η η$ , $η η^{'}$ , $η^{'} η^{'}$ and $K^{+} K^{-}$ are used in conjunction with flavor $S U (3)$ to constrain the coefficients $S$ and $C$ of $\sin Δ m t$ and $\cos Δ m t$ in the time-dependent $C P$ asymmetries of $B^{0} \to η^{'} K_{S}$ and $B^{0} \to π^{0} K_{S}$ . Experimental values of $S_{η^{'} K}$ are now seen to be closer to the Standard Model expectations, fully consistent with the new improved bounds.

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References (31)

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Updated bounds on $C P$ asymmetries in $B^{0} \to η^{'} K_{S}$ and $B^{0} \to π^{0} K_{S}$

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Updated bounds on CP asymmetries in B0→η′KS and B0→π0KS

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Updated bounds on $C P$ asymmetries in $B^{0} \to η^{'} K_{S}$ and $B^{0} \to π^{0} K_{S}$