Patterns of New Physics in B Decays

Abstract

We show that any new physics (NP) which affects B decays with penguin contributions can be absorbed by redefinitions of the standard-model (SM) diagrammatic amplitudes. Hence, there are no clean signals of NP in such decays unless there is an accurate theoretical estimate of parameters or a justifiable approximation can be made. In all decays with penguin contributions, NP simultaneously affects pairs of diagrams. The evidence for a large C' from fits to B-> pi K data is naturally explained if NP contributes to P_EW, since NP affects the P_EW and C' diagrams as a pair. The weak phase gamma measured in B-> pi K decays will always agree with its SM value even in the presence of NP, if the NP contributes in such a way that the amplitudes retain the SM form after suitable redefinitions.

4 pages, revtex, no figures; Several changes made to highlight results obtained

References in corpus (17)

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• A Critical Study of the B -> K πPuzzle
• Can One Measure the Weak Phase of a Penguin Diagram?
• Reparametrization invariance of B decay amplitudes and implications for new physics searches in B decays
• Obtaining the Full Unitarity Triangle from B -> pi K Decays
• Can one detect new physics in I=0 and/or I=2 contributions to the decays B --> pi pi?

Cited by in corpus (6)

• The B-->pi K Puzzle and Supersymmetry
• Probing new physics in $B\to J/\Psi {\pi }^0$ decay
• Measuring $\mathbf{CP}$ violating phase in beauty baryon decays
• Complete analysis of all $B\to \pi K$ decays
• Searching for New Physics by means of Relative Phases and Moduli of Decay Amplitudes
• Extracting the CKM phase angle γ(\equiv ϕ_3) from isospin analysis in B\to K πdecays