  We use the framework of the p19MSSM to perform a fit to the mild excesses
over the Standard Model background recently observed in three bins of the ATLAS
1-lepton + (b-)jets + MET search. We find a few types of spectra that can fit
the emerging signal and at the same time are not excluded by other LHC
searches. They can be grouped roughly in two categories. The first class is
characterized by the presence of one stop or stop and sbottoms with mass in the
ballpark of 700-800 GeV and a neutralino LSP of mass around 400 GeV, with or
without the additional presence of an intermediate chargino. In the second type
of scenarios the stop, lightest chargino, sbottom if present, and the
neutralino are about or heavier than ~650 GeV and the signal originates from
cascade decays of squarks of the 1st and 2nd generation, which should have a
mass of 1.1-1.2 TeV. For the best-fit scenarios, we compare the global
chi-squared with respect to several ATLAS and CMS searches with the
corresponding chi-squared of the Standard Model expectation, showing that the
putative signal is also favored globally with respect to the background only
hypothesis. We point out that if the observed excess persists in the next round
of data, it should be accompanied by associated significant excesses in
all-hadronic final state searches.
