131 Result(s)
within
Astronomy, Astrophysics and Cosmology
Nuclear Physics, Heavy Ions, Hadrons
**-sen Xu
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Article
Open AccessConstraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV pp collision data with two top quarks and missing transverse momentum in the final state
This paper presents a statistical combination of searches targeting final states with two top quarks and invisible particles, characterised by the presence of zero, one or two leptons, at least one jet origina...
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Open AccessMeasurement of the total cross section and \(\rho \) -parameter from elastic scattering in pp collisions at \(\sqrt{s}=13\) TeV with the ATLAS detector
In a special run of the LHC with \(\beta ^{\star } = 2.5\) β ...
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Article
Open AccessMeasurement 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 \(\sqrt{s_{_\text {NN}}}=5.02\) ...
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Article
Open AccessMass testing and characterization of 20-inch PMTs for JUNO
Main goal of the JUNO experiment is to determine the neutrino mass ordering using a 20 kt liquid-scintillator detector. Its key feature is an excellent energy resolution of at least 3% at 1 MeV, for which its ...
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Article
Open AccessSearch for type-III seesaw heavy leptons in leptonic final states in pp collisions at \(\sqrt{s} = 13~\text {TeV}\) with the ATLAS detector
A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to ...
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Article
Open AccessDirect constraint on the Higgs–charm coupling from a search for Higgs boson decays into charm quarks with the ATLAS detector
A search for the Higgs boson decaying into a pair of charm quarks is presented. The analysis uses proton–proton collisions to target the production of a Higgs boson in association with a leptonically decaying W o...
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Open AccessConstraints 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 article presents the results of two studies of Higgs boson properties using the \(WW^*(\rightarrow e\nu \mu \nu )jj\) ...
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Open AccessSearch for long-lived charginos based on a disappearing-track signature using 136 fb \(^{-1}\) of pp collisions at \(\sqrt{s}\) = 13 TeV with the ATLAS detector
A search for long-lived charginos produced either directly or in the cascade decay of heavy prompt gluino states is presented. The search is based on proton–proton collision data collected at a centre-of-mass ...
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Article
Open AccessTwo-particle Bose–Einstein correlations in \({ pp }\) collisions at \(\mathbf {\sqrt{s} = 13}\) TeV measured with the ATLAS detector at the LHC
This paper presents studies of Bose–Einstein correlations (BEC) in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data from the ATLAS detector at the CERN Large Hadron Collider. Data were...
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Open AccessDetermination of the parton distribution functions of the proton using diverse ATLAS data from pp collisions at \(\sqrt{s} = 7\) , 8 and 13 TeV
This paper presents an analysis at next-to-next-to-leading order in the theory of quantum chromodynamics for the determination of a new set of proton parton distribution functions using diverse measurements in pp
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Open AccessMeasurement of the energy asymmetry in \(t{\bar{t}}j\) production at \(13\,\) TeV with the ATLAS experiment and interpretation in the SMEFT framework
A measurement of the energy asymmetry in jet-associated top-quark pair production is presented using \(139\,{\mathrm {fb}}^{-1}\) ...
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Article
Open AccessSearch for flavour-changing neutral-current interactions of a top quark and a gluon in pp collisions at \(\sqrt{s}=13\) TeV with the ATLAS detector
A search is presented for the production of a single top quark via left-handed flavour-changing neutral-current (FCNC) interactions of a top quark, a gluon and an up or charm quark. Two production processes ar...
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Article
Open AccessMeasurement of the energy response of the ATLAS calorimeter to charged pions from \(W^{\pm }\rightarrow \tau ^{\pm }(\rightarrow \pi ^{\pm }\nu _{\tau })\nu _{\tau }\) events in Run 2 data
The energy response of the ATLAS calorimeter is measured for single charged pions with transverse momentum in the range \(10<p_\text {T}<300\)
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Article
Open AccessThe ATLAS inner detector trigger performance in pp collisions at 13 TeV during LHC Run 2
The design and performance of the inner detector trigger for the high level trigger of the ATLAS experiment at the Large Hadron Collider during the 2016–2018 data taking period is discussed. In 2016, 2017, and...
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Article
Open AccessObservation of electroweak production of two jets in association with an isolated photon and missing transverse momentum, and search for a Higgs boson decaying into invisible particles at 13 \(\text {TeV}\) with the ATLAS detector
This paper presents a measurement of the electroweak production of two jets in association with a \(Z\gamma \) ...
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Article
Open AccessMeasurement of the c-jet mistagging efficiency in \(t\bar{t}\) events using pp collision data at \(\sqrt{s}=13\) \(\text {TeV}\) collected with the ATLAS detector
A technique is presented to measure the efficiency with which c-jets are mistagged as b-jets (mistagging efficiency) using \(t\bar{t}\) ...
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Article
Open AccessPerformance of the ATLAS Level-1 topological trigger in Run 2
During LHC Run 2 (2015–2018) the ATLAS Level-1 topological trigger allowed efficient data-taking by the ATLAS experiment at luminosities up to 2.1 ...
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Article
Open AccessSearch for chargino–neutralino pair production in final states with three leptons and missing transverse momentum in \(\sqrt{s} = 13\) TeV pp collisions with the ATLAS detector
A search for chargino–neutralino pair production in three-lepton final states with missing transverse momentum is presented. The study is based on a dataset of
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Article
Open AccessConfiguration and performance of the ATLAS b-jet triggers in Run 2
Several improvements to the ATLAS triggers used to identify jets containing b-hadrons (b-jets) were implemented for data-taking during Run 2 of the Large Hadron Collider from 2016 to 2018. These changes include r...
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Open AccessSearch for R-parity-violating supersymmetry in a final state containing leptons and many jets with the ATLAS experiment using \(\sqrt{s} = 13\hbox { TeV}\) proton–proton collision data
A search for R-parity-violating supersymmetry in final states characterized by high jet multiplicity, at least one isolated light lepton and either zero or at least three b-tagged jets is presented. The search us...
