  The observation of light super-partners from a supersymmetric extension to
the Standard Model is an intensely sought-after experimental outcome, providing
an explanation for the stabilization of the electroweak scale and indicating
the existence of new particles which could be consistent with dark matter
phenomenology. For compressed scenarios, where sparticle spectra
mass-splittings are small and decay products carry low momenta, dedicated
techniques are required in all searches for supersymmetry. In this paper we
suggest an approach for these analyses based on the concept of Recursive Jigsaw
Reconstruction, decomposing each event into a basis of complementary
observables, for cases where strong initial state radiation has sufficient
transverse momentum to elicit the recoil of any final state sparticles. We
introduce a collection of kinematic observables which can be used to probe
compressed scenarios, in particular exploiting the correlation between missing
momentum and that of radiative jets. As an example, we study squark and gluino
production, focusing on mass-splittings between parent super-particles and
their lightest decay products between 25 and 200 GeV, in hadronic final states
where there is an ambiguity in the provenance of reconstructed jets.

High Energy Physics - Phenomenology;High Energy Physics - Experiment