Reports

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2017-12-12
15:27
arXiv [PUBDB-2017-13362] Report/Poster
; ; ; et al
Search for Heavy Higgs Bosons A / H Decaying to a Top Quark Pair in p p Collisions at s = 8     TeV with the ATLAS Detector
[CERN-EP-2017-134]
EPS-HEP 2017, EPS-HEP 2017, Meeting locationGeneva, Suisse, 9 Nov 2017 - 9 Nov 20172017-11-092017-11-09 (2017) [10.1103/PhysRevLett.119.191803]  GO
ddc:550
A search for heavy pseudoscalar ($A$) and scalar ($H$) Higgs bosons decaying into a top quark pair ($t\bar{t}$) has been performed with 20.3 fb$^{-1}$ of proton--proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a center-of-mass energy of $\sqrt{s} = 8$ TeV. Interference effects between the signal process and Standard Model $t\bar{t}$ production, which are expected to distort the signal shape from a single peak to a peak--dip structure, are taken into account. [...]
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2017-12-12
14:52
DBCoverage [PUBDB-2017-13357] Preprint/Report
; ; ; et al
Measurement of the cross-section for electroweak production of dijets in association with a Z boson in pp collisions at s = 13   TeV with the ATLAS detector
[CERN-EP-2017-115] ddc:530
The cross-section for the production of two jets in association with a leptonically decaying Z boson ($Zjj$) is measured in proton--proton collisions at a centre-of-mass energy of 13 TeV, using data recorded with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 3.2 fb$^{-1}$. The electroweak $Zjj$ cross-section is extracted in a fiducial region chosen to enhance the electroweak contribution relative to the dominant Drell--Yan $Zjj$ process, which is constrained using a data-driven approach. [...]
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2017-12-12
14:47
OpenAccess [PUBDB-2017-13356] Preprint/Report

Search for heavy resonances decaying into $WW$ in the $e\nu\mu\nu$ final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
[CERN-EP-2017-214; arXiv:1710.01123]
 GO
A search for neutral heavy resonances is performed in the $WW\to e\nu\mu\nu$ decay channel using $pp$ collision data corresponding to an integrated luminosity of 36.1 fb$^{-1}$, collected at a centre-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. No evidence of such heavy resonances is found. [...]
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2017-12-12
14:42
OpenAccess [PUBDB-2017-13355] Preprint/Report

Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at $\sqrt{s}$ = 13 TeV
[CERN-EP-2017-198; arXiv:1710.09748]
 GO
A search for doubly charged Higgs bosons with pairs of prompt, isolated, highly energetic leptons with the same electric charge is presented. The search uses a proton-proton collision data sample at a centre-of-mass energy of 13 TeV corresponding to 36.1 $\mathrm{fb}^{-1}$ of integrated luminosity recorded in 2015 and 2016 by the ATLAS detector at the LHC. [...]
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2017-12-12
14:35
arXiv [PUBDB-2017-13354] Preprint/Report

A measurement of the soft-drop jet mass in pp collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
[CERN-EP-2017-231]
Calculations of jet substructure observables that are accurate beyond leading-logarithm accuracy have recently become available. Such observables are significant not only for probing the collinear regime of QCD that is largely unexplored at a hadron collider, but also for improving the understanding of jet substructure properties that are used in many studies at the Large Hadron Collider. [...]
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2017-12-12
14:32
OpenAccess [PUBDB-2017-13353] Preprint/Report

Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb$^{-1}$ of $\sqrt{s}=13$ TeV pp collision data with the ATLAS detector
[CERN-EP-2017-246; arXiv:1711.11520]
 GO
The results of a search for the direct pair production of top squarks, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, several energetic jets, and missing transverse momentum are reported. The analysis also targets spin-0 mediator models, where the mediator decays into a pair of dark-matter particles and is produced in association with a pair of top quarks. [...]
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2017-12-12
14:30
OpenAccess [PUBDB-2017-13352] Preprint/Report

Measurement of differential cross-sections of a single top quark produced in association with a $W$ boson at $\sqrt{s}=13$ TeV with ATLAS
[CERN-EP-2017-221; arXiv:1712.01602]
 GO
The differential cross-section for the production of a $W$ boson in association with a top quark is measured for several particle-level observables. The measurements are performed using 36.1 fb$^{-1}$ of $pp$ collision data collected with the ATLAS detector at the LHC in 2015 and 2016. [...]
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2017-12-12
14:28
arXiv [PUBDB-2017-13351] Preprint/Report

Search for long-lived charginos based on a disappearing-track signature in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
[CERN-EP-2017-179; arXiv:1712.02118]
This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 $\mathrm{fb}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV collected by the ATLAS experiment at the LHC. [...]
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2017-12-12
14:26
OpenAccess [PUBDB-2017-13350] Preprint/Report

Measurement of the Higgs boson coupling properties in the $H\rightarrow ZZ^{*} \rightarrow 4\ell$ decay channel at $\sqrt{s}$ = 13 TeV with the ATLAS detector
[CERN-EP-2017-206; arXiv:1712.02304]
 GO
The coupling properties of the Higgs boson are studied in the four-lepton decay channel using 36.1 fb$^{-1}$ of $pp$ collision data from the LHC at a centre-of-mass energy of 13 TeV collected by the ATLAS detector. Cross sections are measured for the four key production modes in several exclusive regions of the Higgs boson production phase space and are interpreted in terms of coupling modifiers. [...]
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2017-12-12
14:15
OpenAccess [PUBDB-2017-13349] Preprint/Report
; ; ; et al
Search for Dark Matter Produced in Association with a Higgs Boson Decaying to $b\bar{b}$ using 36 fb$^{−1}$ of $pp$ Collisions at $\sqrt{s}$ = 13     TeV with the ATLAS Detector
[CERN-EP-2017-117; arXiv:1707.01302] ddc:550
Several extensions of the Standard Model predict associated production of dark-matter particles with a Higgs boson. Such processes are searched for in final states with missing transverse momentum and a Higgs boson decaying to a $b\bar b$ pair with the ATLAS detector using 36.1 fb$^{-1}$ of $pp$ collisions at a center-of-mass energy of 13 TeV at the LHC. [...]
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