Alternative theories of CP violation

Riccardo Barbieri, Lawrence Hall, Achille Stocchie, Neal Weiner

    Research output: Contribution to journalArticle

    Abstract

    Recent improvements to the limit of ΔMBs imply that pure superweak theories, while not excluded, no longer provide a good fit to the data. A class of general superweak theories is introduced in which all flavor changing interactions are governed by an approximate flavor symmetry which gives a "3 mechanism". These theories are in good agreement with data, and predict low values for |Vtd|, |Vub/Vcb|, B(K+ → π+̄v), ∈′/∈ and CP asymmetries in B decays, and high values for ΔMBs and fB√BB. An important example of such a theory is provided by weak scale supersymmetric theories with soft CP violation. The CP violation originates in the squark mass matrix, and, with phases of order unity, flavor symmetries can yield a correct prediction for the order of magnitude of ∈K.

    Original languageEnglish (US)
    Pages (from-to)119-125
    Number of pages7
    JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
    Volume425
    Issue number1-2
    StatePublished - Apr 16 1998

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    CP violation
    symmetry
    unity
    asymmetry
    decay
    matrices
    predictions
    interactions

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Barbieri, R., Hall, L., Stocchie, A., & Weiner, N. (1998). Alternative theories of CP violation. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 425(1-2), 119-125.

    Alternative theories of CP violation. / Barbieri, Riccardo; Hall, Lawrence; Stocchie, Achille; Weiner, Neal.

    In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 425, No. 1-2, 16.04.1998, p. 119-125.

    Research output: Contribution to journalArticle

    Barbieri, R, Hall, L, Stocchie, A & Weiner, N 1998, 'Alternative theories of CP violation', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 425, no. 1-2, pp. 119-125.
    Barbieri, Riccardo ; Hall, Lawrence ; Stocchie, Achille ; Weiner, Neal. / Alternative theories of CP violation. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 1998 ; Vol. 425, No. 1-2. pp. 119-125.
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