Signs of tops from highly mixed stops
| Autor: | Mihailo Backović, Michael Spannowsky, Alberto Mariotti |
|---|---|
| Přispěvatelé: | UCL - SST/IRMP - Institut de recherche en mathématique et physique, Physics, Theoretical Physics |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Physics
Nuclear and High Energy Physics Particle physics Stop squark Large Hadron Collider Physics beyond the Standard Model Flavour High Energy Physics::Phenomenology FOS: Physical sciences hep-ph Supersymmetry TOPS Standard Model High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) Supersymmetry Phenomenology phenomenology High Energy Physics::Experiment Event (particle physics) Mixing (physics) Mathematics |
| Zdroj: | Journal of High Energy Physics Journal of high energy physics, 2015, Vol.2015(06), pp.122 [Peer Reviewed Journal] Journal of High Energy Physics, Vol. 2015, no.6, p. 122 [1-34] (2015) |
| Popis: | Supersymmetric extensions of the Standard Model with highly mixed squark flavours beyond minimal flavour violation provide interesting scenarios of new physics, which have so far received limited attention. We propose a calculable realization of such scenarios in models of gauge mediation augmented with an extra interaction between the messengers and the up type squark. We compute the supersymmetric spectrum and analyze the flavour physics constraints on such models. In a simplified model approach, we show that scenarios with maximal squark flavour mixing result in interesting phenomenological signatures at the LHC. We show that the model can be probed up to masses of $m_{\tilde{u}} \lesssim 950$ GeV in the single-top event topology at LHC14 with as little as 300 fb$^{-1}$. The most distinctive signature of highly mixed scenarios, the same sign positive charge di-top, can be probed to comparable squark masses at high luminosity LHC14. 36 pages, 9 figures, 8 tables. Minor changes to the conclusions section. Accepted For publication in JHEP |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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