Squark flavour violation and naturalness at the LHC

CERN Theory Division, CH-1211, Geneva 23, Switzerland

^a e-mail: monika.blanke@cern.ch

Abstract

While rare meson decays place stringent constraints on much of the flavour violating parameter space of supersymmetric models, the mixing between right-handed top and charm squarks is so far unconstrained by the available data. Such mixing has in fact a very appealing phenomenology: it significantly weakens the current experimental bounds from direct squark searches and leads to a modest reduction of fine-tuning. The scenario can be tested already with the present 8 TeV data set by looking for the flavour violating final state $t\overline{c}\left(c\overline{t}\right)+{\cancel{E}}_T$, thanks to the large squark pair production cross section.