U-Spin Tests of the Standard Model and New Physics

Abstract

Within the standard model, a relation involving branching ratios and direct CP asymmetries holds for the B-decay pairs that are related by U-spin. The violation of this relation indicates new physics (NP). In this paper, we assume that the NP affects only the Delta S = 1 decays, and show that the NP operators are generally the same as those appearing in B -> pi K decays. The fit to the latest B -> pi K data shows that only one NP operator is sizeable. As a consequence, the relation is expected to be violated for only one decay pair: Bd -> K0 pi0 and Bs -> Kbar0 pi0.

12 pages, latex, no figures. References changed to follow MPL guidelines; info added about U-spin breaking and small NP strong phases; discussion added about final-state pi-K rescattering; analysis and conclusions unaltered

References in corpus (59)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• QCD Factorization for $B\to \pi \pi$ Decays: Strong Phases and CP Violation in the Heavy Quark Limit
• CP Violation and the CKM Matrix: Assessing the Impact of the Asymmetric B Factories
• 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
• Fat penguins and imaginary penguins in perturbative QCD
• Final State Interactions in Hadronic B Decays
• Decays of $B$ Mesons to Two Light Pseudoscalars
• B -> M1 M2: Factorization, Charming Penguins, Strong Phases, and Polarization
• Anatomy of Prominent B and K Decays and Signatures of CP-Violating New Physics in the Electroweak Penguin Sector
• ELECTROWEAK PENGUINS AND TWO-BODY B DECAYS
• B -> pi pi, New Physics in B -> pi K and Implications for Rare K and B Decays
• Form Factors from Light-Cone Sum Rules with B-Meson Distribution Amplitudes
• New Strategies to Extract $\beta$ and $\gamma$ from $B_d\to {\pi }^{+}{\pi }^{-}$ and $B_s\to K^{+}{K}^{-}$
• Charmless $B\to PP$ decays using flavor SU(3) symmetry
• Polarization in B->VV Decays
• Resolution to the B -> pi K puzzle
• Two body B decays with isosinglet final states in SCET
• Rates, Polarizations, and Asymmetries in Charmless Vector-Vector B Meson Decays
• Triple-Product Correlations in B -> V1 V2$ Decays and New Physics
• Measurement of Polarization and Triple-Product Correlations in B -> phi K^* Decays
• Kaon Distribution Amplitude from QCD Sum Rules
• The B -> pi K Puzzle and New Physics
• U-Spin Symmetry in Charmless B Decays
• Measurements of Charmless Hadronic Two-Body B Meson Decays and the Ratio cal B(B--> DK)/ cal B(B--> Dπ)
• The Riddle of Polarization in $B\to VV$ Transitions
• Measurement of Charge Asymmetries in Charmless Hadronic in B Meson Decays
• Final state interactions for B => VV charmless decays
• Measurement of the B0->PhiK*0 Decay Amplitudes
• Measuring New-Physics Parameters in B Penguin Decays
• Data for Polarization in Charmless B -> phi K^*: A Signal for New Physics?
• Observation of B+ --> K0bar K+ and B0 --> K0 K0bar
• Is observed direct CP violation in $B_d\to K^{+}{\pi }^{-}$ due to new physics? Check standard model prediction of equal violation in $B_s\to K^{-}{\pi }^{+}$
• Polarization States in B -> rho K* and New Physics
• Polarizations in decays B_{u,d}\to VV and possible implications for R-parity violating SUSY
• Flavour SU(3) Symmetry in Charmless B Decays
• Scalar interactions and the polarizations of $B\to \varphi K^{\ast }$
• Is There Still a B -> pi K Puzzle?
• MSSM Anatomy of the Polarization Puzzle in B --> phi K* Decays
• Improved Measurements of the Branching Fractions for B0 --> pi+pi- and B0 --> K+pi-, and a Search fro B0 --> K+K-
• Methods for Measuring New-Physics Parameters in B Decays
• Charmless decays B->pipi, piK and KK in broken SU(3)symmetry
• Right handed currents and FSI phases in B^0 --> ϕK^{*0}
• Branching ratio and CP violation of $B_s\to \pi K$ decays in the perturbative QCD approach
• Model independent sum rules for B-> pi K decays
• Observation of B Decays to Two Kaons
• Measurements of time-dependent CP violation in $B^0\to \omega K_S^0$, $f_0(980)K_S^0$, $K_S^0{\pi }^0$ and $K^{+}{K}^{-}{K}_S^0$ decays
• CP violating SUSY effects in Penguin dominated modes B -> PHI K and B -> PHI K*
• Measurement of the CP-Violating Asymmetries in B0 -> KS pi0 and of the Branching Fraction of B0 -> K0 pi0
• Implications of new data in charmless B decays
• Highlights of the B-Physics Landscape
• Flavour Physics and CP Violation
• The B -> pi pi, pi K Puzzles: Implications for Hadron Physics, New Physics and Rare Decays
• Rare Decays as a Probe for New Physics
• Determining weak phase gamma and probing new physics in b->s transitions from B->eta(eta')K
• Impact of Right-handed Strange-beauty Squark on b <-> s Transitions

Cited by in corpus (8)

• CP asymmetries in three-body B+- decays to charged pions and kaons
• U-spin breaking in CP asymmetries in B decays
• SU(3) Breaking in Charmless B Decays
• Testing Explanations of the $B\to \varphi K^{\ast }$ Polarization Puzzle
• Determination of gamma and -2beta_s from charmless two-body decays of beauty mesons
• More Flavor SU(3) Tests for New Physics in CP Violating B Decays
• Searching for New Physics by means of Relative Phases and Moduli of Decay Amplitudes
• Sum rules for B-->pi eta('), K eta('), eta(') eta(') decays