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Institute for Theoretical Particle Physics (TTP)

TTP01-07 Exploring new Physics in the BϕK System

TTP01-07 Exploring new Physics in the BϕK System

TTP01-07 Exploring new Physics in the BϕK System

Employing the SU(2) isospin symmetry of strong interactions and estimates borrowed from effective field theory, we explore the impact of new physics on the decays B±ϕK± and BdϕKS in a model-independent manner. To this end, we introduce - in addition to the usual mixing-induced CP asymmetry in BdϕKS - a set of three observables, which may not only provide smoking-gun signals for new-physics contributions to different isospin channels, but also valuable insights into hadron dynamics. Imposing dynamical hierarchies of amplitudes, we discuss various patterns of these observables, including also scenarios with small and large rescattering processes. Whereas the BϕK system provides, in general, a powerful tool to search for indications of new physics, there is also an unfortunate case, where such effects cannot be distinguished from those of the Standard Model.

Robert Fleischer, Thomas Mannel
Phys. Lett. B511 240-250 2001
PDF PostScript arXiv
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