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B-decay CP-asymmetries in SUSY with a U(2)3 flavour symmetry

  • Riccardo Barbieri
  • Paolo Campli
  • Gino Isidori
  • Filippo Sala
  • David M. Straub
Regular Article - Theoretical Physics

Abstract

We study CP asymmetries in rare B decays within supersymmetry with a U(2)3 flavour symmetry, motivated by the SUSY flavour and CP problems, the hierarchies in the Yukawa couplings and the absence so far of any direct evidence for SUSY. Even in the absence of flavour-blind phases, we find potentially sizable CP violating contributions to bs decay amplitudes. The effects in the mixing-induced CP asymmetries in BϕK S and BηK S , angular CP asymmetries in BK μ + μ and the direct CP asymmetry in BX s γ can be in the region to be probed by LHCb and next generation B factories. At the same time, these effects in B decays are compatible with CP violating contributions to meson mixing, including a non-standard B s mixing phase hinted by current tensions in the CKM fit mostly between \(S_{\psi K_{S}}, \epsilon_{K}\) and \(\Delta M_{B_{s}}/\Delta M_{B_{d}}\).

Keywords

Yukawa Coupling High Energy Phys Minimal Flavour Violation Gluino Contribution Resolve Photon Contribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag / Società Italiana di Fisica 2011

Authors and Affiliations

  • Riccardo Barbieri
    • 1
  • Paolo Campli
    • 1
  • Gino Isidori
    • 2
  • Filippo Sala
    • 1
  • David M. Straub
    • 1
  1. 1.Scuola Normale Superiore and INFNPisaItaly
  2. 2.INFN, Laboratori Nazionali di FrascatiFrascatiItaly

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