ATLAS Conference Notes

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2019-03-19
20:29

Measurement of Higgs boson production in association with a $t\overline t$ pair in the diphoton decay channel using 139~fb$^{-1}$ of LHC data collected at $\sqrt{s} = 13$~TeV by the ATLAS experiment
The measurement of Higgs boson production in association with a top quark-antiquark pair in the diphoton decay channel ($H \to \gamma \gamma$) is presented, based on the analysis of 139~fb$^{-1}$ of proton-proton collision data with center-of-mass energy $\sqrt{s}=13$ TeV recorded with the ATLAS detector at the Large Hadron Collider. [...]
ATLAS-CONF-2019-004. - 2019.
Original Communication (restricted to ATLAS) - Full text

2019-03-17
17:27

Search for diboson resonances in hadronic final states in 139 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
Narrow resonances decaying into $WW$, $WZ$ or $ZZ$ boson pairs are searched for in 139 fb$^{-1}$ of proton-proton data at a centre-of-mass energy of $\sqrt{s}=13$ TeV recorded with the ATLAS detector at the Large Hadron Collider from 2015 to 2018. [...]
ATLAS-CONF-2019-003. - 2019.
Original Communication (restricted to ATLAS) - Full text

2019-03-17
09:21

Observation of light-by-light scattering in ultraperipheral Pb+Pb collisions with the ATLAS detector
This note describes the observation of the light-by-light scattering process, $\gamma\gamma\to\gamma\gamma$, in Pb+Pb collisions at $\sqrt{s_\mathrm{NN}}$=5.02 TeV. [...]
ATLAS-CONF-2019-002. - 2019.
Original Communication (restricted to ATLAS) - Full text

2019-02-26
12:53

Search for high-mass dilepton resonances using $139\,\mathrm{fb}^{-1}$ of $pp$ collision data collected at $\sqrt{s}=13\,\mathrm{TeV}$ with the ATLAS detector
A search for high-mass dielectron and dimuon resonances in the mass range of 250$\,$GeV to 6$\,$TeV is presented. [...]
ATLAS-CONF-2019-001. - 2019.
Original Communication (restricted to ATLAS) - Full text

2018-12-18
08:38

Calibration of the $b$-tagging eﬃciency on charm jets using a sample of $W$+$c$ events with $\sqrt{s}$ = 13 TeV ATLAS data
The identification of jets containing $b$-hadrons ($b$-jets) is of fundamental importance for many physics analyses performed by the ATLAS experiment. [...]
ATLAS-CONF-2018-055. - 2018. - 22 p.
Original Communication (restricted to ATLAS) - Full text

2018-11-30
08:22

Combination of searches for invisible Higgs boson decays with the ATLAS experiment
Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. [...]
ATLAS-CONF-2018-054. - 2018. - 11 p.
Original Communication (restricted to ATLAS) - Full text

2018-11-27
08:38

Measurements of $VH$, $H \to b\bar{b}$ production as a function of the vector boson transverse momentum in 13 TeV pp collisions with the ATLAS detector
Cross sections of associated production of a Higgs boson decaying to bottom-quark pairs and an electroweak gauge boson $W$ or $Z$ decaying to leptons are measured as a function of the gauge boson transverse momentum. [...]
ATLAS-CONF-2018-053. - 2018.
Original Communication (restricted to ATLAS) - Full text

2018-11-27
08:26

Search for boosted resonances decaying to two b-quarks and produced in association with a jet at $\sqrt{s}=13$ TeV with the ATLAS detector
A search for new resonances decaying into a pair of bottom quarks in the merged regime is reported using an integrated luminosity of 80.5~\ifb of proton-proton collisions at $\sqrt{s}=13$ TeV recorded by the ATLAS detector at the Large Hadron Collider. [...]
ATLAS-CONF-2018-052. - 2018. - 19 p.
Original Communication (restricted to ATLAS) - Full text

2018-11-07
17:20

Constraints on mediator-based dark matter models using $\sqrt s = 13$ TeV $pp$ collisions at the LHC with the ATLAS detector
Constraints on selected mediator-based dark matter models using $\sqrt s = 13$~TeV $pp$ collisions collected by the ATLAS detector during the years 2015-2016 are summarised in this note. [...]
ATLAS-CONF-2018-051. - 2018.
Original Communication (restricted to ATLAS) - Full text

2018-10-03
17:23

Dijet azimuthal correlations and conditional yields in $p\!p$ and $p$+Pb collisions at $\sqrt{s_{_\text{NN}}}$~=~5.02 TeV with the ATLAS detector
This paper presents a measurement of forward--forward and forward--central dijet azimuthal angular correlations and conditional yields in proton--proton ($pp$) and proton--lead ($p$+Pb) collisions as a probe for possible gluon-density saturation in regions where the momentum fraction of a parton compared to a nucleon in the lead nucleus is low. [...]
ATLAS-CONF-2018-050. - 2018. - 29 p.
Original Communication (restricted to ATLAS) - Full text

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