RGE Behaviour of SUSY with a U(2)^3 symmetry
| Autor: | Gianluca Blankenburg, Joel Jones-Perez |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Physics
Gluino Particle physics Standard Model Large Hadron Collider Physics and Astronomy (miscellaneous) Flavour High Energy Physics::Phenomenology FOS: Physical sciences Supersymmetry Symmetry (physics) High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Naturalness Minimal Flavor Violation Even Higgs Bosons Supersymmetric Theories High Energy Physics::Experiment Engineering (miscellaneous) Realization (systems) Lepton Particle Physics - Phenomenology |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | The first LHC results seem to disfavor, from the point of view of naturalness, any constrained MSSM realization with universal conditions at the SUSY-breaking scale. A more motivated scenario is given by split-family SUSY, in which the first two generations of squarks are heavy, compatible with a U(2)(3) flavor symmetry. We consider this flavor symmetry to be broken at a very high scale and study the consequences at low energies through its RGE evolution. Initial conditions compatible with a split scenario are found, and the preservation of correlations from minimal U(2)(3) breaking are checked. The various chiral operators in Delta F = 2 processes are analyzed, and we show that, due to LHC gluino bounds, the (LL)(RR) operators cannot always be neglected. Finally, we also study a possible extension of the U(2)(3) model compatible with the lepton sector We would like to thank Gino Isidori for motivating this work and for use ful discussions and comments on the draft. G.B. would like to thank CERN for the hospitality during his visit. J.J.P. acknowledges partial support from the grants Generalitat V alenciana VALi+d, Spanish MINECO FPA 2011-23596 and the Generalitat Valenciana PROMETEO - 2008/004 |
| Databáze: | OpenAIRE |
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