ATLAS Conference Notes

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2021-01-08
08:03

Measurement of flow and transverse momentum correlations in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV and Xe+Xe collisions at $\sqrt{s_{\mathrm{NN}}}=5.44$ TeV with the ATLAS detector
The measurement of the correlation between flow harmonics $v_n$ and average transverse momentum $p_\mathrm{T}$ for $n=2$, 3 and 4 with the ATLAS detector at the LHC is presented, based on 3~$\mu\textrm{b}^{-1}$ Xe+Xe collisions at $\sqrt{s_{\mathrm{NN}}}=5.44$ TeV and 22~$\mu\textrm{b}^{-1}$ Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV. [...]
ATLAS-CONF-2021-001. - 2021.
Original Communication (restricted to ATLAS) - Full text

2020-11-06
09:54

Measurement of the Higgs boson decaying to $b$-quarks produced in association with a top-quark pair in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
The associated production of a Higgs boson with a top-quark pair is measured in events characterised by the presence of one or two electrons or muons. [...]
ATLAS-CONF-2020-058. - 2020.
Original Communication (restricted to ATLAS) - Full text

2020-11-05
22:09

Determination of the parton distribution functions of the proton from ATLAS measurements of differential $W^\pm$ and $Z$ boson production in association with jets
This article presents a new set of proton parton distribution functions, ATLASepWZVjet20, produced in an analysis at next-to-next-to-leading-order in QCD. [...]
ATLAS-CONF-2020-057. - 2020. - 29 p.
Original Communication (restricted to ATLAS) - Full text

2020-11-05
21:48

Search for doubly- and singly-charged Higgs bosons decaying into vector bosons in multi-leptons final states with the ATLAS detector using proton-proton collisions at $\sqrt{s} = 13$ TeV
A search for charged Higgs bosons decaying into $W^\pm W^\pm$ or $W^\pm Z$ bosons is performed, involving experimental signatures with two leptons of the same-charge, or three or four leptons with a variety of charge combinations, missing transverse momentum and jets. [...]
ATLAS-CONF-2020-056. - 2020.
Original Communication (restricted to ATLAS) - Full text

2020-11-05
21:14

Constraints on Higgs boson properties using $WW^{*}(\rightarrow e\nu\mu\nu)\;jj$ production in $36.1 \mathrm{fb}^{-1}$ of $\sqrt{s}=13 TeV$ pp collisions with the ATLAS detector
This note presents the results of two studies of Higgs boson properties using the $WW^*(\rightarrow e\nu\mu\nu)jj$ final state, based on a dataset corresponding to $36.1\,\mathrm{fb}^{-1}$ of $\sqrt{s}=13\,\mathrm{TeV}$ proton-proton collisions recorded by the ATLAS experiment at the Large Hadron Collider. [...]
ATLAS-CONF-2020-055. - 2020. - 25 p.
Original Communication (restricted to ATLAS) - Full text

2020-10-30
10:21

Search for dark matter in events with missing transverse momentum and a Higgs boson decaying to two photons in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
A search for dark matter particles in events with large missing transverse momentum and a Higgs boson candidate decaying to two photons is reported. [...]
ATLAS-CONF-2020-054. - 2020. - 33 p.
Original Communication (restricted to ATLAS) - Full text

2020-10-29
16:52

Interpretations of the combined measurement of Higgs boson production and decay
First combined measurements of the Higgs boson production and decay using up to 139 fb$^{−1}$ of proton–proton collision data at √s = 13 TeV recorded by the ATLAS experiment have recently been performed. [...]
ATLAS-CONF-2020-053. - 2020.
Original Communication (restricted to ATLAS) - Full text

2020-10-29
15:39

Combination of searches for invisible Higgs boson decays with the ATLAS experiment
Many extensions of the Standard Model predict the production of dark matter particles at the LHC. [...]
ATLAS-CONF-2020-052. - 2020. - 17 p.
Original Communication (restricted to ATLAS) - Full text

2020-10-06
18:34

Search for displaced leptons in $\sqrt{s} = 13$ TeV pp collisions with the ATLAS detector
A search for charged leptons with large impact parameters using 139 fb$^{-1}$ of $\sqrt{s} = 13$ TeV $pp$ data from the ATLAS detector at the LHC is presented, addressing a long-standing gap in coverage of possible new physics signatures. [...]
ATLAS-CONF-2020-051. - 2020.
Original Communication (restricted to ATLAS) - Full text

2020-09-15
13:21

Measurements of $b$-jet moments sensitive to $b$-quark fragmentation in $t \bar{t}$ events at the LHC with the ATLAS detector
The measurement of several observables sensitive to the fragmentation of $b$-quarks with 36 fb${}^{-1}$ of $\sqrt s = 13$ TeV LHC data are presented. [...]
ATLAS-CONF-2020-050. - 2020.
Original Communication (restricted to ATLAS) - Full text

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