Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 19: Flavourphysik (Theorie) 2
T 19.9: Vortrag
Montag, 4. März 2013, 18:50–19:05, WIL-B122
Correlations between Flavour Observables in New Physics scenarios — •Jennifer Girrbach — Institute for Advanced Study (IAS), Technische Universität München (TUM)
The coming flavour precision era will allow to uncover various patterns of flavour violation in different New Physics scenarios. We discuss three classes of them. First, a simple extension of the Standard Model (SM) that generally introduces new sources of flavour and CP violation as well as right-handed currents: the addition of a U(1) gauge symmetry to the SM gauge group. In such Z′ models correlations between various flavour observables emerges that could test and distinguish different Z′ scenarios. We analyse Δ F = 2 observables in K0−K0 and Bs,d0−Bs,d0 systems and rare K and B decays including both left-handed and right-handed Z′-couplings to quarks. Next, concrete models with flavour violating Z′ couplings are 331 models based on the gauge group SU(3)C× SU(3)L× U(1)X are presented. We identify a number of correlations between various observables that differ from those known from constrained minimal flavour violating (CMFV) models. Finally we discuss a special class of models with an approximate global U(2)3 flavour symmetry (MU(2)3 models). While the flavour structure in K meson system is the same for CMFV and MU(2)3 models, CP violation in Bd,s system can deviate in MU(2)3 models from CMFV. We point out a triple correlation between Sψφ, Sψ KS and |Vub| that can provide a distinction between different MU(2)3 models.