Search for squarks and gluinos in events with an isolated lepton, jets, and missing transverse momentum at $\sqrt{s}$ = 13 TeV with the ATLAS detector

TL;DR

This paper reports a search for supersymmetric particles, specifically squarks and gluinos, in proton-proton collision data at 13 TeV using the ATLAS detector, finding no evidence of new particles but setting mass exclusion limits.

Contribution

First search for squarks and gluinos in events with isolated leptons, jets, and missing transverse momentum at 13 TeV with ATLAS, establishing new exclusion limits.

Findings

No significant excess observed beyond background expectations.

Excluded gluino masses up to 2.1 TeV and squark masses up to 1.25 TeV.

Set 95% confidence level exclusion limits in supersymmetric scenarios.

Abstract

The results of a search for squarks and gluinos in final states with an isolated electron or muon, multiple jets and large missing transverse momentum using proton--proton collision data at a center-of-mass energy of $\sqrt{s}$ = 13 TeV are presented. The dataset used was recorded during 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider and corresponds to an integrated luminosity of 36.1 $fb^{-1}$. No significant excess beyond the expected background is found. Exclusion limits at 95% confidence level are set in a number of supersymmetric scenarios, reaching masses up to 2.1 TeV for gluino pair production and up to 1.25 TeV for squark pair production.