Search for massive supersymmetric particles in multi-jet final states produced in pp collisions at $\sqrt{s}~=$~13 TeV using the ATLAS detector at the LHC

Results of a search for supersymmetric gluino pair productions with subsequent $R$-parity-violating decays to quarks are presented. This search uses 14.8 fb$^{-1}$ of data collected by the ATLAS detector in proton-proton collisions with a center-of-mass energy of $\sqrt{s}$ = 13 TeV at the LHC. The analysis is performed using both a requirement on the number of jets and the number of jets tagged as containing a $b$-hadron as well as a topological observable formed from the scalar sum of large-radius jet masses in the event. No significant deviation is observed from the expected Standard Model backgrounds. For a model where the gluino decays through an intermediate neutralino which, in turn, decays to three quarks, gluino masses ($m_{\tilde{g}}$) below 1000-1550 GeV are excluded depending on the neutralino mass. Gluinos decaying directly to three quarks are excluded for $m_{\tilde{g}}$<1080 GeV.