Now showing items 1-15 of 15

• #### Evidence for Higgs boson decays to a low-mass dilepton system and a photon in pp collisions at √s = 13 TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A search for the Higgs boson decaying into a photon and a pair of electrons or muons with an invariant mass mℓℓ<30 GeV is presented. The analysis is performed using 139 fb−1 of proton–proton collision data, produced by the ...
• #### Measurement of b-quark fragmentation properties in jets using the decay B± → J/ψK± in pp collisions at √s = 13 TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
The fragmentation properties of jets containing b-hadrons are studied using charged B mesons in 139 fb−1 of pp collisions at √s = 13 TeV, recorded with the ATLAS detector at the LHC during the period from 2015 to 2018. The ...
• #### Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A measurement of prompt photon-pair production in proton-proton collisions at √s = 13 TeV is presented. The data were recorded by the ATLAS detector at the LHC with an integrated luminosity of 139 fb−1. Events with two ...
• #### Measurement of the tt¯ tt¯ production cross section in pp collisions at √s = 13 TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A measurement of four-top-quark production using proton-proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the Large Hadron Collider corresponding to an integrated luminosity of ...
• #### Measurements of sensor radiation damage in the ATLAS inner detector using leakage currents ﻿

(Journal article; Peer reviewed, 2021)
Non-ionizing energy loss causes bulk damage to the silicon sensors of the ATLAS pixel and strip detectors. This damage has important implications for data-taking operations, charged-particle track reconstruction, detector ...
• #### Measurements of W + W −+ ≥ 1 jet production cross-sections in pp collisions at √s = 13 TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
Fiducial and differential cross-section measurements of W+W− production in association with at least one hadronic jet are presented. These measurements are sensitive to the properties of electroweak-boson self-interactions ...
• #### Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in pp collisions at √s=13  TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A search for charginos and neutralinos at the Large Hadron Collider using fully hadronic final states and missing transverse momentum is reported. Pair-produced charginos or neutralinos are explored, each decaying into a ...
• #### Search for chargino–neutralino pair production in final states with three leptons and missing transverse momentum in √s=13 TeV pp collisions with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A search for chargino–neutralino pair production in three-lepton final states with missing transverse momentum is presented. The study is based on a dataset of s√=13 TeV pp collisions recorded with the ATLAS detector at ...
• #### Search for exotic decays of the Higgs boson into long-lived particles in pp collisions at √s = 13 TeV using displaced vertices in the ATLAS inner detector ﻿

(Journal article; Peer reviewed, 2021)
A novel search for exotic decays of the Higgs boson into pairs of long-lived neutral particles, each decaying into a bottom quark pair, is performed using 139 fb−1 of s√ = 13 TeV proton-proton collision data collected with ...
• #### Search for flavour-changing neutral-current interactions of a top quark and a gluon in pp collisions at √s=13 TeV with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2022)
A search is presented for the production of a single top quark via left-handed flavour-changing neutral-current (FCNC) interactions of a top quark, a gluon and an up or charm quark. Two production processes are considered: ...
• #### Search for lepton-flavor violation in Z-boson decays with τ leptons with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A search for lepton-flavor-violating Z→eτ and Z→μτ decays with pp collision data recorded by the ATLAS detector at the LHC is presented. This analysis uses 139  fb−1 of Run 2 pp collisions at √s=13 TeV and is combined with ...
• #### Search for new phenomena in final states with two leptons and one or no b-tagged jets at √s=13 TeV using the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A search for new phenomena is presented in final states with two leptons and one or no b-tagged jets. The event selection requires the two leptons to have opposite charge, the same flavor (electrons or muons), and a large ...
• #### Search for new phenomena in pp collisions in final states with tau leptons, b-jets, and missing transverse momentum with the ATLAS detector ﻿

(Journal article; Peer reviewed, 2021)
A search for new phenomena in final states with hadronically decaying tau leptons, b-jets, and missing transverse momentum is presented. The analyzed dataset comprises pp collision data at a center-of-mass energy of √s=13 TeV ...
• #### Search for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using √s = 13 TeV proton–proton collision data ﻿

(Journal article; Peer reviewed, 2021)
A search for R-parity-violating supersymmetry in final states characterized by high jet multiplicity, at least one isolated light lepton and either zero or at least three b-tagged jets is presented. The search uses 139fb−1 ...
• #### Two-particle azimuthal correlations in photonuclear ultraperipheral Pb+Pb collisions at 5.02 TeV with ATLAS ﻿

(Journal article; Peer reviewed, 2021)
Two-particle long-range azimuthal correlations are measured in photonuclear collisions using 1.7 nb−1 of 5.02 TeV Pb+Pb collision data collected by the ATLAS experiment at the CERN Large Hadron Collider. Candidate events ...