Testing the Standard Model with Bs-> K^+ K^- Decays

Abstract

In the limit of flavor SU(3) symmetry, the amplitudes for Bd->pi^+π^- and Bs-> K^+ K^- are related to one another. Taking the values of the weak phases beta and gamma from independent measurements, the ratio Rds=BR(Bs-> K^+K^-)/BR(Bd->pi^+ pi^-) and the two Bd->pi^+pi^- CP asymmetries Adir and Amix depend on only two quantities. By measuring these three observables, one can test for the presence of physics beyond the standard model. In this paper, using present data, and including theoretical uncertainties due to SU(3) breaking, we perform such an analysis. The experimental errors are still very large, but with improved measurements from Babar, Belle and CDF this will be a useful method to search for new physics.

4 pages with 5 figures. Introduction modified; brief discussion about SU(3) breaking added; references changed. Conclusions unchanged. To be published in PRD: Rapid Communications

References in corpus (16)

• QCD Factorization for $B\to \pi \pi$ Decays: Strong Phases and CP Violation in the Heavy Quark Limit
• QCD factorization for exclusive, non-leptonic B meson decays: General arguments and the case of heavy-light final states
• QCD factorization for B->PP and B->PV decays
• QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
• Decays of $B$ Mesons to Two Light Pseudoscalars
• ELECTROWEAK PENGUINS AND TWO-BODY B DECAYS
• B -> pi pi, New Physics in B -> pi K and Implications for Rare K and B Decays
• New Strategies to Extract $\beta$ and $\gamma$ from $B_d\to {\pi }^{+}{\pi }^{-}$ and $B_s\to K^{+}{K}^{-}$
• U-Spin Symmetry in Charmless B Decays
• Exploring CP Violation through Correlations in B --> pi K, B_d --> pi^+pi^-, B_s --> K^+K^- Observable Space
• Strong and Weak Phases from Time-Dependent Measurements of $B\to \pi \pi$
• Flavour SU(3) Symmetry in Charmless B Decays
• Searching for New Physics in Non-Leptonic B Decays
• Constraining Penguin Contributions and the CKM Angle $\gamma$ through $B_d\to {\pi }^{+}{\pi }^{-}$
• Shedding Light on the "Dark Side" of $B_d^0$--${\bar{B}}_d^0$ Mixing through $B_d\to {\pi }^{+}{\pi }^{-}$, $K\to \pi \nu \bar{\nu }$ and $B_{d,s}\to {\mu }^{+}{\mu }^{-}$
• Weak Phase $\gamma$ from $B_s(t)\to K^{+}{K}^{-}$

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• Observation of Bs->K+K- and Measurements of Branching Fractions of Charmless Two-body Decays of B0 and Bs Mesons in p-pbar Collisions at sqrt(s)=1.96 TeV
• Exploring B_{d,s}-> KK decays through flavour symmetries and QCD-factorisation
• Evidence for the charmless annihilation decay mode $B_s^0\to {\pi }^{+}{\pi }^{-}$
• Penguin-mediated B_(d,s)->VV decays and the Bs - anti-Bs mixing angle
• Bs-->K+K- and Bs-->K0 anti-K0 Decays within Supersymmetry
• Measurements of exclusive B_s^0 decays at the Y(5S) resonance
• Bd^0(t)->pi^+pi^- and Bs^0(t)-> K^+ K^- Decays: A Tool to Measure New-Physics Parameters
• Supersymmetric Contributions to Bs->K+K-
• Exploring the Unitarity Triangle through CP violation observables in $B_s\to K^{+}{K}^{-}$
• Bs0 Decays at Belle
• Sum rules for B-->pi eta('), K eta('), eta(') eta(') decays
• Beauty physics with B(s) and Lambda(b)