Search for New Phenomena with Large Jet Multiplicities and Missing Transverse Momentum Using Large-Radius Jets and Flavour-Tagging at ATLAS in 13 TeV pp Collisions

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Abstract

A search is presented for particles that decay producing a large jet multiplicity and invisible particles. The event selection applies a veto on the presence of isolated electrons or muons and additional requirements on the number of b-tagged jets and the scalar sum of masses of large-radius jets. Having explored the full ATLAS 2015-2016 dataset of LHC proton-proton collisions at √s = 13 TeV, which corresponds to 36.1 fb⁻¹ of integrated luminosity, no evidence is found for physics beyond the Standard Model. The results are interpreted in the context of simplified models inspired by R-parity-conserving and R-parity-violating supersymmetry, where gluinos are pair-produced. More generic models within the phenomenological minimal supersymmetric Standard Model are also considered.

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Keywords

Standard model (Nuclear physics), Hadrons--Scattering, Partons, Hadron colliders, Jets (Nuclear physics), Parton distributions, Supersymmetry, Pair production

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Rights

CC BY 4.0 (Attribution), ©2017 CERN, for the ATLAS Collaboration

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