ATLAS Papers

2022-05-12
15:14
 Search for heavy, long-lived, charged particles with large ionisation energy loss in $pp$ collisions at $\sqrt{s} = 13~\text{TeV}$ using the ATLAS experiment and the full Run 2 dataset This paper presents a search for hypothetical massive, charged, long-lived particles with the ATLAS detector at the LHC using an integrated luminosity of 139 $\mathrm{fb^{-1}}$ of proton-proton collisions at $\sqrt{s}=13$ TeV. [...] arXiv:2205.06013 ; CERN-EP-2022-029. - 2022. - 38 p. Fulltext - Previous draft version - Fulltext

2022-05-06
14:55
 Production of $\varUpsilon(\textrm{nS})$ mesons in Pb+Pb and $pp$ collisions at 5.02 TeV A measurement of the production of vector bottomonium states, $\varUpsilon(\textrm{1S})$, $\varUpsilon(\textrm{2S})$, and $\varUpsilon(\textrm{3S})$, in Pb+Pb and $pp$ collisions at a center-of-mass energy per nucleon pair of 5.02 TeV is presented. [...] arXiv:2205.03042 ; CERN-EP-2022-045. - 2022. - 21 p. Fulltext - Previous draft version - Fulltext

2022-05-06
13:53
 Differential $t\bar{t}$ cross-section measurements using boosted top quarks in the all-hadronic final state with 139 fb$^{-1}$ of ATLAS data Measurements of single-, double-, and triple-differential cross-sections are presented for boosted top-quark pair-production in 13 $\text{TeV}$ proton-proton collisions recorded by the ATLAS detector at the LHC. [...] arXiv:2205.02817 ; CERN-EP-2022-026. - 2022. - 104 p. Fulltext - Previous draft version - Fulltext

2022-05-05
12:04
 Search for flavour-changing neutral-current couplings between the top quark and the photon with the ATLAS detector at $\sqrt{s} = 13$ TeV This letter documents a search for flavour-changing neutral currents (FCNCs), which are strongly suppressed in the Standard Model, in events with a photon and a top quark with the ATLAS detector. [...] arXiv:2205.02537 ; CERN-EP-2022-042. - 2022. - 25 p. Fulltext - Previous draft version - Fulltext

2022-05-05
11:13
 Cross-section measurements for the production of a $Z$ boson in association with high-transverse-momentum jets in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector Cross-section measurements for a $Z$ boson produced in association with high-transverse-momentum jets ($p_{\mathrm{T}} \geq 100$ GeV) and decaying into a charged-lepton pair ($e^+e^-,\mu^+\mu^-$) are presented. [...] arXiv:2205.02597 ; CERN-EP-2022-075. - 2022. - 29 p. Fulltext - Previous draft version - Fulltext

2022-05-02
13:27
 Measurements of the suppression and correlations of dijets in Pb+Pb collisions at $\sqrt{s_{_\text{NN}}}$ = 5.02 TeV Studies of the correlations of the two highest transverse momentum (leading) jets in individual Pb+Pb collision events can provide information about the mechanism of jet quenching by the hot and dense matter created in such collisions. [...] arXiv:2205.00682 ; CERN-EP-2022-046. - 2022. - 30 p. Fulltext - Previous draft version - Fulltext

2022-04-29
20:53
 Correlations between flow and transverse momentum in Xe+Xe and Pb+Pb collisions at the LHC with the ATLAS detector: a probe of the heavy-ion initial state and nuclear deformation The correlations between flow harmonics $v_n$ for $n=2$, 3 and 4 and mean transverse momentum $[p_\mathrm{T}]$ in $^{129}$Xe+$^{129}$Xe and $^{208}$Pb+$^{208}$Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.44$ TeV and 5.02 TeV, respectively, are measured using charged particles with the ATLAS detector. [...] arXiv:2205.00039 ; CERN-EP-2022-052. - 2022. - 23 p. Fulltext - Previous draft version - Fulltext

2022-04-28
16:48
 Measurement of the nuclear modification factor of $b$-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector This paper presents a measurement of $b$-jet production in Pb+Pb and $pp$ collisions at $\sqrt{s_{_\textrm{NN}}}=5.02$ TeV with the ATLAS detector at the LHC. [...] arXiv:2204.13530 ; CERN-EP-2022-043. - 2022. - 29 p. Fulltext - Previous draft version - Fulltext

2022-04-28
16:24
 Observation of the $\gamma\gamma\to\tau\tau$ process in Pb+Pb collisions and constraints on the $\tau$-lepton anomalous magnetic moment with the ATLAS detector This Letter reports the observation of $\tau$-lepton pair production in ultraperipheral lead-lead collisions, $\text{Pb+Pb} \to \text{Pb}(\gamma\gamma \to \tau\tau)\text{Pb}$, and constraints on the $\tau$-lepton anomalous magnetic moment, $a_\tau$. [...] arXiv:2204.13478 ; CERN-EP-2022-079. - 2022. - 13 p. Fulltext - Previous draft version - Fulltext

2022-04-28
11:06
 Searches for new phenomena in events with two leptons, jets, and missing transverse momentum in $139~\text{fb}^{-1}$ of $\sqrt{s}=13~$TeV $pp$ collisions with the ATLAS detector Searches for new phenomena inspired by supersymmetry in final states containing an $e^+e^-$ or $\mu^+\mu^-$ pair, jets, and missing transverse momentum are presented. [...] arXiv:2204.13072 ; CERN-EP-2022-014. - 2022. - 56 p. Fulltext - Previous draft version - Fulltext