# ATLAS Notes

2021-08-04
20:38
 Combination and summary of ATLAS dark matter searches using 139 fb-1 of √s = 13 TeV p p collision data and interpreted in a two-Higgs-doublet model with a pseudoscalar mediator A combination of two searches for dark matter is presented, along with results from a wide range of experimental analyses that are interpreted in a common benchmark model: a Two-Higgs-Doublet Model with a pseudoscalar mediator. [...] ATLAS-CONF-2021-036. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-08-04
19:48
 Search for resonant pair production of Higgs bosons in the $b\bar{b}b\bar{b}$ final state using $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector A search for resonant Higgs boson pair production in the $b\bar{b}b\bar{b}$ final state is presented. [...] ATLAS-CONF-2021-035. - 2021. - 30 p. Original Communication (restricted to ATLAS) - Full text

2021-08-04
18:40
 Search for Higgs bosons decaying to new spin-0 or spin-1 particles in four-lepton final states at the ATLAS detector with 139 fb$^{-1}$ of $pp$ collision data at $\sqrt{s}=13$ TeV Searches are conducted for new spin-0 or spin-1 bosons using events where a Higgs boson with mass $125$ GeV decays to four leptons ($\ell =$ $e$, $\mu$). [...] ATLAS-CONF-2021-034. - 2021. - 49 p. Original Communication (restricted to ATLAS) - Full text

2021-08-04
07:40
 Efficiency corrections for a tagger for boosted $H\rightarrow b\bar{b}$ decays in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector The identification of massive particles decaying into bottom-antibottom quark pairs at high transverse momenta in ATLAS is performed using a multivariate algorithm, denoted an $X \rightarrow b\bar{b}$ tagger. [...] ATL-PHYS-PUB-2021-035. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-07-30
18:58
 A precise interpretation for the top quark mass parameter in ATLAS Monte Carlo simulation This note relates the top quark mass parameter in simulated pp collisions with a 13 TeV centre-of-mass-energy produced by ATLAS to a well-defined field-theoretical mass scheme. [...] ATL-PHYS-PUB-2021-034. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-07-29
19:06
 ATLAS LAr Calorimeter commissioning for LHC Run-3 / Selem, Luka (Centre National de la Recherche Scientifique (FR)) The ATLAS experiment at the Large Hadron Collider (LHC) measures proton--proton collisions at high energies. [...] ATL-LARG-PROC-2021-003. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-29
18:27
 Measurements of the production cross section of a $Z$ boson in association with high transverse momentum jets in $pp$ collisions at $\sqrt{s} = 13$~TeV with the ATLAS detector Measurements of the production cross section of a $Z$ boson in association with at least one high transverse momentum jet are presented, separating topologies corresponding to the emission of a $Z$ boson from dijet events and topologies with a boosted $Z$ recoiling against a high-energy jet. [...] ATLAS-CONF-2021-033. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-07-29
18:25
 Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in $pp$ collisions at $\sqrt{s}=13$ TeV A search for events with two displaced vertices from long-lived particles (LLP) pairs using data collected by the ATLAS detector at the LHC is presented. [...] ATLAS-CONF-2021-032. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-07-29
18:24
 Measurements of differential cross-sections in top-quark pair events with a high transverse momentum top quark and limits on beyond the Standard Model contributions to top quark pair production with the ATLAS detector Cross-section measurements of top-quark pair production where the hadronically decaying top quark has transverse momentum greater than $355$ GeV are presented using 139 fb$^{-1}$ of data collected by the ATLAS experiment during proton-proton collisions at the LHC. [...] ATLAS-CONF-2021-031. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-07-29
18:23
 Search for resonant and non-resonant Higgs boson pair production in the $b\bar b\tau^+\tau^-$ decay channel using 13 TeV $pp$ collision data from the ATLAS detector A search for Higgs boson pair production in events with two $b$-jets and two $\tau$-leptons is presented, using a $pp$ collision data set with an integrated luminosity of $139~\text{fb}^{-1}$ collected at $\sqrt{s}=13~\text{TeV}$ by the ATLAS experiment at the LHC. [...] ATLAS-CONF-2021-030. - 2021. Original Communication (restricted to ATLAS) - Full text

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