Search for $R$-parity violating supersymmetry in pp collisions at $\sqrt{s} = $ 13 TeV using b jets in a final state with a single lepton, many jets, and high sum of large-radius jet masses

TL;DR

This study searches for signs of R-parity violating supersymmetry in proton-proton collisions at 13 TeV, using specific event signatures, but finds no evidence of new physics and sets limits on gluino masses.

Contribution

It introduces a novel search strategy for R-parity violating SUSY using a combination of event signatures without relying on missing transverse momentum.

Findings

No significant excess observed beyond standard model predictions.

Gluinos with masses below 1610 GeV are excluded at 95% confidence level.

Provides new constraints on R-parity violating SUSY models.

Abstract

Results are reported from a search for physics beyond the standard model in proton-proton collisions at a center-of-mass energy of $\sqrt{s} = $ 13 TeV. The search uses a signature of a single lepton, large jet and bottom quark jet multiplicities, and high sum of large-radius jet masses, without any requirement on the missing transverse momentum in an event. The data sample corresponds to an integrated luminosity of 35.9 fb$^{-1}$ recorded by the CMS experiment at the LHC. No significant excess beyond the prediction from standard model processes is observed. The results are interpreted in terms of upper limits on the production cross section for $R$-parity violating supersymmetric extensions of the standard model using a benchmark model of gluino pair production, in which each gluino decays promptly via $ {\mathrm{\widetilde{g}}} \rightarrow \mathrm{t} \mathrm{b} \mathrm{s} $. Gluinos with a mass below 1610 GeV are excluded at 95% confidence level.