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Correlated bounds on CP asymmetries in $B^0 \to η' K_S$

Michael Gronau·Jonathan L. Rosner·Jure Zupan
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Abstract

Flavor SU(3) is used to constrain the coefficients of $\sinΔmt$ and $\cosΔmt$ in the time-dependent CP asymmetry of $B^0 \to η' K_S$. Correlated bounds in the $(S_{η' K}, C_{η' K})$ plane are derived, by using recent rate measurements of $B^0$ decays into $K^+ K^-, π^0π^0, π^0η, π^0η', ηη, ηη', η'η'$. Stringent bounds are obtained when assuming a single SU(3) singlet amplitude and when neglecting annihilation-type amplitudes.

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Michael Gronau, Jonathan L. Rosner, Jure Zupan. 2004-06-25. Correlated bounds on CP asymmetries in $B^0 \to η' K_S$. https://doi.org/10.1016/j.physletb.2004.06.086

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