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1.
Search for bottom-squark pair production in $pp$ collision events at $\sqrt{s} = 13$ TeV with hadronically decaying $\tau$-leptons, $b$-jets and missing transverse momentum using the ATLAS detector / ATLAS Collaboration
A search for pair production of bottom squarks in events with hadronically decaying $\tau$-leptons, $b$-tagged jets and large missing transverse momentum is presented. The analyzed dataset is based on proton-proton collisions at $\sqrt{s}$ = 13 TeV delivered by the Large Hadron Collider and recorded by the ATLAS detector from 2015 to 2018, and corresponds to an integrated luminosity of 139 fb$^{-1}$. [...]
arXiv:2103.08189; CERN-EP-2020-235.- Geneva : CERN, 2021-08-01 - 31 p. - Published in : Phys. Rev. D 104 (2021) 032014 Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
2.
Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector / ATLAS Collaboration
Measurements of four-lepton differential and integrated fiducial cross-sections in events with two same-flavour, opposite-charge electron or muon pairs are presented. The data correspond to 139 fb$^{-1}$ of $\sqrt{s}=13$ TeV proton-proton collisions, collected by the ATLAS detector during Run 2 of the Large Hadron Collider (2015-2018). [...]
arXiv:2103.01918; CERN-EP-2021-019.- Geneva : CERN, 2021-07-02 - 67 p. - Published in : JHEP 2107 (2021) 005 Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
3.
Search for resonances decaying into photon pairs in 139 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector / ATLAS Collaboration
Searches for new resonances in the diphoton final state, with spin 0 as predicted by theories with an extended Higgs sector and with spin 2 using a warped extra-dimension benchmark model, are presented using 139 fb$^{-1}$ of $\sqrt{s} = $ 13 TeV $pp$ collision data collected by the ATLAS experiment at the LHC. No significant deviation from the Standard Model is observed and upper limits are placed on the production cross-section times branching ratio to two photons as a function of the resonance mass..
arXiv:2102.13405; CERN-EP-2020-248.- Geneva : CERN, 2021-11-10 - 33 p. - Published in : Phys. Lett. B 822 (2021) 136651 Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
4.
Search for charged Higgs bosons decaying into a top quark and a bottom quark at $ \sqrt{\mathrm{s}} $ = 13 TeV with the ATLAS detector / ATLAS Collaboration
A search for charged Higgs bosons decaying into a top quark and a bottom quark is presented. The data analysed correspond to 139 fb$^{-1}$ of proton-proton collisions at $\sqrt{s}$=13TeV, recorded with the ATLAS detector at the LHC. [...]
arXiv:2102.10076; CERN-EP-2021-004.- Geneva : CERN, 2021-06-24 - 47 p. - Published in : JHEP 2106 (2021) 145 Fulltext: 2102.10076 - PDF; document - PDF; External link: Previous draft version
5.
Search for new phenomena in events with two opposite-charge leptons, jets and missing transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
The results of a search for direct pair production of top squarks and for dark matter in events with two opposite-charge leptons (electrons or muons), jets and missing transverse momentum are reported, using 139 fb$^{-1}$ of integrated luminosity from proton-proton collisions at $\sqrt{s} = 13$ TeV, collected by the ATLAS detector at the Large Hadron Collider during Run 2 (2015-2018). This search considers the pair production of top squarks and is sensitive across a wide range of mass differences between the top squark and the lightest neutralino. [...]
arXiv:2102.01444; CERN-EP-2020-243.- Geneva : CERN, 2021-04-16 - 62 p. - Published in : JHEP 2104 (2021) 165 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
6.
Search for squarks and gluinos in final states with one isolated lepton, jets, and missing transverse momentum at $\sqrt{s}=13$  with the ATLAS detector / ATLAS Collaboration
The results of a search for gluino and squark pair production with the pairs decaying via the lightest charginos into a final state consisting of two $W$ bosons, the lightest neutralinos ($\tilde{\chi^0_1}$), and quarks, are presented. The signal is characterised by the presence of a single charged lepton ($e^{\pm}$ or $\mu^{\pm}$) from a $W$ boson decay, jets, and missing transverse momentum. [...]
arXiv:2101.01629; CERN-EP-2020-228.- Geneva : CERN, 2021-10-29 - 33 p. - Published in : Eur. Phys. J. C Fulltext: 2101.01629 - PDF; document - PDF; Publication - PDF; Erratum - PDF; External link: Previous draft version
7.
Search for new phenomena with top quark pairs in final states with one lepton, jets, and missing transverse momentum in $pp$ collisions at $\sqrt{s}$= 13 TeV with the ATLAS detector / ATLAS Collaboration
A search for new phenomena with top quark pairs in final states with one isolated electron or muon, multiple jets, and large missing transverse momentum is performed. Signal regions are employed to search for two-, three-, and four-body decays of the directly pair-produced supersymmetric partner of the top quark (stop). [...]
arXiv:2012.03799; CERN-EP-2020-177.- Geneva : CERN, 2021-04-19 - 66 p. - Published in : JHEP 2104 (2021) 174 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
8.
Exclusive dimuon production in ultraperipheral Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV with ATLAS / ATLAS Collaboration
Exclusive dimuon production in ultraperipheral collisions (UPC), resulting from photon-photon interactions in the strong electromagnetic fields of colliding high-energy lead nuclei, $\mathrm{PbPb} (\gamma\gamma) \rightarrow \mu\mu (\mathrm{Pb}^{(\star)}\mathrm{Pb}^{(\star)} )$, is studied using $\mathcal{L}_{\mathrm{int}} = 0.48$ nb$^{-1}$ of $\sqrt{s_\mathrm{NN}}=5.02$ TeV lead-lead collision data at the LHC with the ATLAS detector. Dimuon pairs are measured in the fiducial region $p_{\mathrm{T}\mu} > 4$ GeV, $\eta_{\mu} < 2.4$, invariant mass $m_{\mu\mu} > 10$ GeV, and $p_{\mathrm{T\mu\mu}} < 2$ GeV. [...]
arXiv:2011.12211; CERN-EP-2020-138.- Geneva : CERN, 2021-08-19 - 50 p. - Published in : Phys. Rev. C 104 (2021) 024906 Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
9.
Search for trilepton resonances from chargino and neutralino pair production in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
A search is performed for the electroweak pair production of charginos and associated production of a chargino and neutralino, each of which decays through an $R$-parity-violating coupling into a lepton and a $W, \, Z$, or Higgs boson. The trilepton invariant-mass spectrum is constructed from events with three or more leptons, targeting chargino decays that include an electron or muon and a leptonically decaying $Z$ boson. [...]
arXiv:2011.10543; CERN-EP-2020-201.- Geneva : CERN, 2021-06-07 - 51 p. - Published in : Phys. Rev. D 103 (2021) 112003 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
10.
Search for dark matter produced in association with a single top quark in $\sqrt{s}=13$ TeV $pp$ collisions with the ATLAS detector / ATLAS Collaboration
This paper presents a search for dark matter in the context of a two-Higgs-doublet model together with an additional pseudoscalar mediator, $a$, which decays into the dark-matter particles. Processes where the pseudoscalar mediator is produced in association with a single top quark in the 2HDM+$a$ model are explored for the first time at the LHC. [...]
arXiv:2011.09308; CERN-EP-2020-184.- Geneva : CERN, 2021-10-01 - 53 p. - Published in : Eur. Phys. J. C 81 (2021) 860 Fulltext: 2011.09308 - PDF; document - PDF; Fulltext from publisher: PDF; External link: Previous draft version

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