Search
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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 ...
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 Flavor-Changing Neutral Currents in Top Quark Decays T → Hc and T → Hu in Multilepton Final States in Proton-Proton Collisions at √s =13 TeV with the ATLAS Detector
Flavor-changing neutral currents are not present in the Standard Model at tree level and are suppressed in loop processes by the unitarity of the Cabibbo-Kobayashi-Maskawa matrix; the corresponding rates for top quark decay ...
Search for B - L R-Parity-Violating Top Squarks in √s=13 TeV pp Collisions with the ATLAS Experiment
A search is presented for the direct pair production of the stop, the supersymmetric partner of the top quark, that decays through an R-parity-violating coupling to a final state with two leptons and two jets, at least one ...
Search for Heavy Resonances Decaying into a W or Z Boson and a Higgs Boson in Final States with Leptons and B-Jets in 36 fb⁻¹ of √s=13 TeV pp Collisions with the ATLAS Detector
A search is conducted for new resonances decaying into a W or Z boson and a 125 GeV Higgs boson in the νν̅bb̅, ℓ^±νbb̅, and ℓ⁺ℓ⁻bb̅ final states, where ℓ^± = e^± or μ^±, in pp collisions at √s=13 TeV. The data used correspond ...
Search for Higgs Boson Decays to Beyond-The-Standard-Model Light Bosons in Four-Lepton Events with the ATLAS Detector at √s=13 TeV
A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ). This decay is presumed to occur via an intermediate state which contains ...
Study of the Rare Decays of B{_{s}⁰} and B⁰ Mesons into Muon Pairs Using Data Collected during 2015 and 2016 with the ATLAS Detector
A study of the decays B{_{s}⁰} → μ⁺μ⁻ and B⁰ → μ⁺μ⁻ has been performed using 26.3 fb⁻¹ of 13 TeV LHC proton-proton collision data collected with the ATLAS detector in 2015 and 2016. Since the detector resolution in μ⁺μ⁻ ...
Measurement of the Four-Lepton Invariant Mass Spectrum in 13 TeV Proton-Proton Collisions with the ATLAS Detector
A measurement of the four-lepton invariant mass spectrum is made with the ATLAS detector, using an integrated luminosity of 36.1 fb⁻¹ of proton-proton collisions at √s = 13 TeV delivered by the Large Hadron Collider. The ...
Search for Four-Top-Quark Production in the Single-Lepton and Opposite-Sign Dilepton Final States in pp Collisions at √s =13 TeV with the ATLAS Detector
A search for four-top-quark production, tt̅tt̅, is presented. It is based on proton-proton collision data with a center-of-mass energy √s=13 TeV collected by the ATLAS detector at the Large Hadron Collider during the years ...
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 ...