OpenAccess

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2020-07-01
13:12
OpenAccess [PUBDB-2020-02527] Journal Article
et al
Searches for electroweak production of supersymmetric particles with compressed mass spectra in $\sqrt{s}=$ 13 TeV $pp$ collisions with the ATLAS detector
[CERN-EP-2019-242; arXiv:1911.12606]
This paper presents results of searches for the electroweak production of supersymmetric particles in models with compressed mass spectra. The searches use 139  fb-1 of s=13  TeV proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider. [...]
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2020-07-01
12:24
OpenAccess [PUBDB-2020-02526] Journal Article
et al
Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in $\sqrt {s}$=13 TeV $pp$ collisions with the ATLAS detector
[CERN-EP-2019-263; arXiv:1912.08479]
A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. [...]
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2020-07-01
12:05
OpenAccess [PUBDB-2020-02525] Journal Article
et al
Measurement of isolated-photon plus two-jet production in $pp$ collisions at $\sqrt s=13$ TeV with the ATLAS detector
[CERN-EP-2019-210; arXiv:1912.09866]
The dynamics of isolated-photon plus two-jet production in pp collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset corresponding to an integrated luminosity of 36.1 fb$^{−1}$. Cross sections are measured as functions of a variety of observables, including angular correlations and invariant masses of the objects in the final state, γ + jet + jet [...]
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2020-06-25
12:13
OpenAccess [PUBDB-2020-02475] Preprint
et al
Measurement of the $t\bar{t}$ production cross-section in the lepton+jets channel at $\sqrt{s}=13\;$TeV with the ATLAS experiment
[CERN-EP-2020-096; arXiv:2006.13076]
 GO
The $t\bar{t}$ production cross-section is measured in the lepton+jets channel using proton$-$proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV collected with the ATLAS detector at the LHC. The dataset corresponds to an integrated luminosity of 139 fb$^{-1}$. [...]
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2020-06-24
11:13
OpenAccess [PUBDB-2020-02468] Journal Article
et al
X-ray atomic mapping of quantum dots
We report a model-independent atomic-mapping technique for quantum dots (QDs) by combining Bragg reflection x-ray standing wave (XSW) and grazing incidence diffraction (GID) measurements. In this study, we choose GaAs capped InGaAs QDs/GaAs(001) as a model system to show the locations and arrangements of indium atoms within the QDs along various [hkl] directions. [...]
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2020-06-19
10:23
OpenAccess [PUBDB-2020-02411] Preprint
et al
Microscopic force for aerosol transport
[arXiv:2006.10652]
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A key ingredient for single particle diffractive imaging experiments is the successful and efficient delivery of sample. Current sample-delivery methods are based on aerosol injectors in which the samples are driven by fluid-dynamic forces. [...]
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2020-06-18
15:05
OpenAccess [PUBDB-2020-02409] Preprint
et al
Search for heavy diboson resonances in semileptonic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
[CERN-EP-2020-049; arXiv:2004.14636]
 GO
This paper reports on a search for heavy resonances decaying into $WW$, $ZZ$ or $WZ$ using proton-proton collision data at a centre-of-mass energy of $\sqrt{s}=13$ TeV. The data, corresponding to an integrated luminosity of 139 $\mathrm{fb^{-1}}$, were recorded with the ATLAS detector from 2015 to 2018 at the Large Hadron Collider. [...]
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2020-06-18
14:35
OpenAccess [PUBDB-2020-02408] Preprint
et al
Search for a scalar partner of the top quark in the all-hadronic $t\bar{t}$ plus missing transverse momentum final state at $\sqrt{s}$=13 TeV with the ATLAS detector
[CERN-EP-2020-044; arXiv:2004.14060]
 GO
A search for direct pair production of scalar partners of the top quark (top squarks or scalar third-generation up-type leptoquarks) in the all-hadronic $t\bar{t}$ plus missing transverse momentum final state is presented. The analysis of 139 fb$^{-1}$ of $\sqrt{s}$=13 TeV proton-proton collision data collected using the ATLAS detector at the LHC yields no significant excess over the Standard Model background expectation. [...]
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2020-06-18
14:20
OpenAccess [PUBDB-2020-02407] Journal Article
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Observation of Photoion Backward Emission in Photoionization of He and N$_{2}$
We experimentally investigate the effects of the linear photon momentum on the momentum distributions of photoions and photoelectrons generated in one-photon ionization in an energy range of 300  eV≤E$_\gamma$≤40  keV. Our results show that for each ionization event the photon momentum is imparted onto the photoion, which is essentially the system’s center of mass. [...]
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2020-06-18
12:54
OpenAccess [PUBDB-2020-02405] Journal Article
et al
Higgs Production at NNLL$'$+NNLO using Rapidity Dependent Jet Vetoes
[CERN-TH-2020-036; DESY-20-035; TIFR/TH/20-7; arXiv:2003.04323]
The rapidity-dependent jet veto observables $ {\mathcal{T}}_{Bj} $ and $ {\mathcal{T}}_{Cj} $ provide a tight jet veto at central rapidity, gradually transitioning to a loose veto at forward rapidities. They divide the phase space into exclusive jet bins in a different way to the traditional jet veto observable p$_{T j}$, and are advantageous to use under harsh pile-up conditions. [...]
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