ATLAS Conference Notes

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2023-11-26
08:25

Search for the non-resonant production of Higgs boson pairs via gluon fusion and vector-boson fusion in the $b\bar{b}\tau^+\tau^-$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
A search for the non-resonant production of Higgs boson pairs in the $HH\rightarrow b\bar{b}\tau^+\tau^-$ channel is performed using 140~fb$^{-1}$ of proton-proton collisions at a centre-of-mass energy of $13$~TeV recorded by the ATLAS detector at the CERN Large Hadron Collider. [...]
ATLAS-CONF-2023-071. - 2023. - 28 p.
Original Communication (restricted to ATLAS) - Full text

2023-10-24
09:51

Search for pair-production of vector-like quarks in lepton+jets final states containing at least one $b$-jet using the Run 2 data from the ATLAS experiment
A search is presented for the pair-production of heavy vector-like quarks in the lepton+jets final state using 140 fb$^{-1}$ of proton–proton collision data with $\sqrt{s}= 13$ TeV collected with the ATLAS detector. [...]
ATLAS-CONF-2023-070. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-10-18
13:13

Observation of quantum entanglement in top-quark pair production using $pp$ collisions of $\sqrt{s} = 13$~\TeV\ with the ATLAS detector
We report the highest-energy observation of entanglement so far in top--antitop quark events produced at the Large Hadron Collider, using a proton$-$proton collision data set with a centre-of-mass energy of $\sqrt{s}=13$ TeV and an integrated luminosity of 140 fb$^{-1}$. [...]
ATLAS-CONF-2023-069. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:59

Measurement of differential cross sections in $t\bar t$ and $t\bar t+$jets production in the lepton+jets decay mode in $pp$ collisions at $\sqrt s=$ 13 TeV using 140 fb$^{-1}$ of ATLAS data
Differential cross sections for top-quark pair production, inclusively and in association with jets, are measured in $pp$ collisions at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 140 fb$^{-1}$. [...]
ATLAS-CONF-2023-068. - 2023. - 61 p.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:15

Measurement of high-momentum Higgs boson production in association with a vector boson in the qqbb final state with the ATLAS detector
This note presents a measurement of Higgs boson production in association with a vector boson (V = W or Z) in the fully hadronic qqbb final state using data recorded by the ATLAS detector at the LHC in proton–proton collisions at √s = 13 TeV and corresponding to an integrated luminosity of 137 fb−1. [...]
ATLAS-CONF-2023-067. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:14

Combination of measurements of the top quark mass from data collected by the ATLAS and CMS experiments at √s = 7 and 8 TeV
A combination of fifteen top quark mass measurements performed by the ATLAS and CMS experiments at the LHC is presented. [...]
ATLAS-CONF-2023-066. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:13

Inclusive and differential cross section measurements of $t\bar{t}Z$ production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector, including EFT and spin correlations interpretations
Measurements of both the inclusive and differential production cross sections of a top-quark-antiquark pair in association with a $Z$ boson ($t\bar{t}Z$) are presented. [...]
ATLAS-CONF-2023-065. - 2023. - 85 p.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:10

Search for non-resonant Higgs boson pair production in the $2b + 2\ell + E_\mathrm{T}^\mathrm{miss}$ final state in $pp$ collisions at $\sqrt{s} = 13\,\mathrm{TeV}$ with the ATLAS detector
A search for non-resonant Higgs boson pair ($HH$) production is presented, in which one of the Higgs bosons decays to a b-quark pair ($b\bar b$) and the other decays to $WW^*$, or $ZZ^*$, or $\tau^+\tau^-$, with in each case a final state with $\ell^+\ell^- +$ neutrinos ($\ell = e, \mu$). [...]
ATLAS-CONF-2023-064. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:08

Observation of $t\bar{t}$ production in lepton+jets and dilepton channels in $p$+Pb collisions at $\sqrt{s_\mathrm{NN}}=8.16\;\mathrm{TeV}$ with the ATLAS detector
This note presents a measurement of the top-quark pair production cross section in proton-lead~($p$+Pb) collisions at $\sqrt{s_\mathrm{NN}}=8.16$ TeV at the Large Hadron Collider. [...]
ATLAS-CONF-2023-063. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-10-02
20:07

Measurement of $ZZ$ production cross-sections in the four-lepton final state in $pp$ collisions at $\sqrt{s}= 13.6$ TeV with the ATLAS experiment
This paper reports a cross-section measurement of $ZZ$ production in pp collisions at $\sqrt{s}= 13.6$ TeV at the Large Hadron Collider. [...]
ATLAS-CONF-2023-062. - 2023.
Original Communication (restricted to ATLAS) - Full text

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