Abstract
A search for supersymmetry in hadronic final states with highly boosted
W bosons and b jets is presented, focusing on compressed scenarios. The
search is performed using proton-proton collision data at a
center-of-mass energy of 8 TeV, collected by the CMS experiment at the
LHC, corresponding to an integrated luminosity of 19.7 fb(-1). Events
containing candidates for hadronic decays of boosted W bosons are
identified using jet substructure techniques, and are analyzed using the
razor variables M-R and R-2, which characterize a possible signal as a
peak on a smoothly falling background. The observed event yields in the
signal regions are found to be consistent with the expected
contributions from standard model processes, which are predicted using
control samples in the data. The results are interpreted in terms of
gluino-pair production followed by their exclusive decay into top
squarks and top quarks. The analysis excludes gluino masses up to 1.1
TeV for light top squarks decaying solely to a charm quark and a
neutralino, and up to 700 GeV for heavier top squarks decaying solely to
a top quark and a neutralino.