Abstract
Abstract:
A search for massive coloured resonances which are pair-produced and decay into two jets is
presented. The analysis uses 36.7 fb−1 of √s = 13 TeV pp collision data recorded by
the ATLAS experiment at the LHC in 2015 and 2016. No significant deviation from the background
prediction is observed. Results are interpreted in a SUSY simplified model where the lightest
supersymmetric particle is the top squark, t˜, which decays promptly into two quarks through
R-parity-violating couplings. Top squarks with masses in the range
100 GeV < mt˜
< 410 GeV are excluded at 95% confidence level. If the decay is into
a b-quark and a light quark, a dedicated selection requiring two b-tags is used to exclude masses
in the ranges 100 GeV < mt˜ < 470 GeV and 480 GeV < mt˜ < 610 GeV. Additional
limits are set on the pair-production of massive colour-octet resonances.