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Measurements of Top Quark Spin Observables in tt̅ Events Using Dilepton Final States in √s = 8 TeV PP Collisions with the ATLAS Detector
(Springer Verlag, 2018-09-12)
Measurements of top quark spin observables in tt¯ events are presented based on 20.2 fb−1 of s=8 TeV proton-proton collisions recorded with the ATLAS detector at the LHC. The analysis is performed in the dilepton final ...
Combination of Inclusive and Differential tt̅ Charge Asymmetry Measurements Using ATLAS and CMS Data at √s =7 and 8 TeV
This paper presents combinations of inclusive and differential measurements of the charge asymmetry (AC) in top quark pair (tt̅) events with a lepton + jets signature by the ATLAS and CMS Collaborations, using data from ...
Measurement of Jet Fragmentation in Pb+Pb and pp Collisions at √{snn} =5.02 TeV with the ATLAS Detector
This paper presents a measurement of jet fragmentation functions in 0.49 nb⁻¹ of Pb+Pb collisions and 25 pb⁻¹ of pp collisions at √{sNN}=5.02 TeV collected in 2015 with the ATLAS detector at the LHC. These measurements ...
Measurement of the Soft-Drop Jet Mass in pp Collisions at √s =13 TeV with the ATLAS Detector
Jet substructure observables have significantly extended the search program for physics beyond the standard model at the Large Hadron Collider. The state-of-the-art tools have been motivated by theoretical calculations, ...
Search for Pair Production of Up-Type Vector-Like Quarks and for Four-Top-Quark Events in Final States with Multiple B-Jets with the ATLAS Detector
A search for pair production of up-type vector-like quarks (T) with a significant branching ratio into a top quark and either a Standard Model Higgs boson or a Z boson is presented. The same analysis is also used to search ...
Search for a Structure in the B{{_s}{^0}} Π^± Invariant Mass Spectrum with the ATLAS Experiment
A search for the narrow structure, X(5568), reported by the DO Collaboration in the decay sequence X → B{{_s}{^0}} π^±, B{{_s}{^0}} → J/ψφ, is presented. The analysis is based on a data sample recorded with the ATLAS ...
Search for the Standard Model Higgs Boson Produced in Association with Top Quarks and Decaying into a bb̅ Pair in pp Collisions at √s=13 TeV with the ATLAS Detector
A search for the standard model Higgs boson produced in association with a top-quark pair, tt̅ H, is presented. The analysis uses 36.1 fb⁻¹ of pp collision data at √s = 13 TeV collected with the ATLAS detector at the Large ...
Search for Supersymmetry in Final States with Missing Transverse Momentum and Multiple B-Jets in Proton-Proton Collisions at √s=13 TeV with the ATLAS Detector
A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino (χ{_1^{˜0}}) is reported. It uses LHC proton-proton collision data at a centre-of-mass ...
Search for Heavy Particles Decaying into Top-Quark Pairs Using Lepton-Plus-Jets Events in Proton–Proton Collisions at √s=13 TeV with the ATLAS Detector
A search for new heavy particles that decay into top-quark pairs is performed using data collected from proton–proton collisions at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. The ...
Search for Supersymmetry in Events with Four or More Leptons in √s =13 TeV pp Collisions with ATLAS
Results from a search for supersymmetry in events with four or more charged leptons (electrons, muons and taus) are presented. The analysis uses a data sample corresponding to 36.1 fb-1 of proton-proton collisions delivered ...