Abstract
We describe the phenomenology of the flavour changing neutral current sector of a supersymmetric model, invariant under the T′ discrete flavour group. This model has been proposed in ref. [1] and describes realistic leptonic and hadronic masses and mixings and predicts the amount of flavour changing in terms of the small flavour breaking parameter u ∈ [0.007, 0.05]. For small values of u, the model almost reduces to the MSUGRA framework, while sizable deviations from MSUGRA can be, instead, observed when larger values of u and tan β are considered. We analyse in detail T′ μ → eγ prediction, concerning the leptonic sector, while for the hadronic sector we concentrate on b → sγ and neutral B meson mass differences \( \Delta {M_{{{B_{{s,d}}}}}} \). Moreover, for the first time a comparative study on leptonic and hadronic observables for the T′ model is performed. The experimental data on FCNC observables severely constrain the model in the small m 0 region. Conversely for larger m 0 , the T′ model satisfies all the bounds.
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Merlo, L., Rigolin, S. & Zaldıvar, B. Flavour violation in a supersymmetric T′ model. J. High Energ. Phys. 2011, 47 (2011). https://doi.org/10.1007/JHEP11(2011)047
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DOI: https://doi.org/10.1007/JHEP11(2011)047