ATLAS Notes

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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

2023-10-02
19:41

Measurement of Transverse Momentum Fluctuations in Xe+Xe and Pb+Pb Collisions with ATLAS
Measurements of the first three cumulants of the distribution of the event-by-event transverse momentum distribution, including the mean $\langle[\pT]\rangle$, variance, and skewness, are performed with the ATLAS detector at the Large Hadron Collider. [...]
ATLAS-CONF-2023-061. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-09-29
22:01

Roadmap towards future combinations and Effective Field Theory interpretations of top+X processes
This document describes the challenges of combining top+X measurements to produce coherent probes of the Standard Model predictions and Effective Field Theory (EFT) interpretations in the ATLAS experiment. [...]
ATL-PHYS-PUB-2023-030. - 2023.
Original Communication (restricted to ATLAS) - Full text

2023-09-29
20:57

Studies on the improvement of the matching uncertainty definition in top-quark processes simulated with Powheg+Pythia 8
Top-quark processes, including pair production, single-top production and production in association with electroweak bosons, are modelled by the ATLAS Collaboration by matching the hard-scatter matrix element calculations of next-to-leading order Monte-Carlo generators with a parton shower generator. [...]
ATL-PHYS-PUB-2023-029. - 2023. - 33 p.
Original Communication (restricted to ATLAS) - Full text

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