Flavour constraints on scenarios with two or three heavy squark generations

Abstract

We re-assess constraints from flavour-changing neutral currents in the kaon system on supersymmetric scenarios with a light gluino, two heavy generations of squarks and a lighter third generation. We compute for the first time limits in scenarios with three heavy squark families, taking into account QCD corrections at the next-to-leading order. We compare our limits with those in the case of two heavy families. We use the mass insertion approximation and consider contributions from gluino exchange to constrain the mixing between the first and second squark generation. While it is not possible to perform a general analysis, we assess the relevance of each kind of flavour- and CP-violating parameters. We also provide ready to use magic numbers for the computation of the Wilson coefficients at 2 GeV for these scenarios.

23 pages, 14 figures; v3: matches published version (contains improvements in the presentation and clarifications)

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Cited by in corpus (12)

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• ΔS=2 and ΔC=2 bag parameters in the SM and beyond from Nf=2+1+1 twisted-mass LQCD
• Low Energy Probes of PeV Scale Sfermions
• Natural Baryogenesis from Unnatural Supersymmetry
• Neutral kaon mixing from new physics: matrix elements in $N_f=2+1$ QCD
• Single-Scale Natural SUSY
• Phenomenological aspects of supersymmetric composite Higgs models
• Split SUSY Radiates Flavor
• Maximal Sfermion Flavor Violation in Super-GUTs
• The Flavour of Natural SUSY
• An Unfamiliar Way to Generate the Hierarchy of Standard Model Fermion Masses
• Gluinos lighter than squarks and detection at the LHC