Searches for pair-produced multijet signatures using data corresponding to an integrated luminosity of 128 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$ = 13 TeV are presented. A data scouting technique is employed to record events with low jet scalar transverse momentum sum values. The electroweak production of particles predicted in $R$-parity violating supersymmetric models is probed for the first time with fully hadronic final states. This is the first search for prompt hadronically decaying mass-degenerate higgsinos, and extends current exclusions on $R$-parity violating top squarks and gluinos.
Fit results for the pair produced merged three-quark average jet mass ($\bar{m}$) distribution, after the selection of $p_{\rm T}>300$ GeV, $|\eta|<2.4$, and $\tau_{32,\mathrm{DDT}}<0$ on both leading and subleading jet and $A_m<0.15$
Fit results for the pair produced merged three-quark average jet mass ($\bar{m}$) distribution, after the selection of $p_{\rm T}>300$ GeV, $|\eta|<2.4$, and $N^1_{2,\mathrm{DDT}}<0$ on both leading and subleading jet
Fit results for the region 1 of pair produced resolved three jet mass ($m_{jjj}$) distribution, after $H_{\rm T}>600$ GeV, $|\eta|<2.4$, sixth jet $p_{\rm T}>40$ GeV, $D^2_{[(6,3)+(3,2)]}<1.25$, $A_m <0.25$, $\Delta>250$ GeV, $D^2_{[3,2]}<0.05$
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