Weak Phase $\gamma$ from $B_s(t)\to K^{+}{K}^{-}$

Abstract

We re-examine the time-dependent rates of $\bs(t) \to K^+ K^-$ and $\obs(t) \to K^+ K^-$, including a lifetime difference between neutral $\bs$ mass eigenstates. The two rates, normalized by the rate of $\bs \to \ko \ok$, are used to obtain ambiguity-free information on a strong phase and on the weak phase $\gamma$. We discuss the sensitivity of extracting $\gamma$ to the measured quantities, and find that an error of $\pm 10^{\circ }$ in $\gamma$ is possible for a sample of several thousand $\bs(t) \to K^+ K^-$ decays. This study is complementary to a recent similar analysis of the U-spin related decays $\bo(t) \to π^+π^-$ and $\ob(t) \to π^+π^-$.

12 pages, LaTeX, 3 figures, revised version submitted to Phys. Rev. D

References in corpus (9)

• QCD Factorization in B -> pi K, pi pi Decays and Extraction of Wolfenstein Parameters
• Observation of Large CP Violation in the Neutral B Meson System
• Observation of CP violation in the B^0 meson system
• A New Approach to a Global Fit of the CKM Matrix
• Strong and Weak Phases from Time-Dependent Measurements of $B\to \pi \pi$
• Implications of CP Asymmetry Limits for $B\to K\pi$ and $B\to \pi \pi$
• Analysis of $B_s\to KK$ decays in the PQCD
• Study of CP-violating asymmetries in B^0 --> pi^+pi^-, K^+pi^- decays
• Information on $B\to \pi \pi$ Provided by the Semileptonic Process $B\to \pi l\nu$

Cited by in corpus (11)

• Charmless non-leptonic B_s decays to PP, PV and VV final states in the pQCD approach
• Phenomenological Analysis of Charmless Decays Bs->PP,PV with QCD Factorization
• Exploring CP Violation through Correlations in B --> pi K, B_d --> pi^+pi^-, B_s --> K^+K^- Observable Space
• Exploring B_{d,s}-> KK decays through flavour symmetries and QCD-factorisation
• The $b\to s$ penguin amplitude in charmless $B\to PP$ decays
• Convention-independent study of CP-violating asymmetries in $B\to \pi \pi$
• Studying New Physics Amplitudes in Charmless B_s Decays
• Bd^0(t)->pi^+pi^- and Bs^0(t)-> K^+ K^- Decays: A Tool to Measure New-Physics Parameters
• Testing the Standard Model with Bs-> K^+ K^- Decays
• Exploring the Unitarity Triangle through CP violation observables in $B_s\to K^{+}{K}^{-}$
• Conference Summary (5th Int. Conf. on Hyperons, Charm, and Beauty Hadrons)