CERN Accelerating science

ATLAS Preprints

Últimas adquisiciones:
2018-06-25
09:55
Heavy ion measurements at ATLAS and CMS / Chapon, Emilien (CERN) /ATLAS and CMS Collaborations
We present an overview of recent results from the ATLAS and CMS collaborations on heavy ion physics. Using data from proton-proton, proton-lead and lead-lead collisions at the LHC, these results help to shed light on the properties of nuclear matter..
CMS-CR-2018-053.- Geneva : CERN, 2018 - 5 p. Fulltext: PDF;
In : 53rd Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 17 - 24 Mar 2018

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2018-06-25
09:54
Searches with top quarks / Hogan, Julie Managan (Brown U.) /ATLAS and CMS Collaborations
Heavy new physics particles including vector-like quarks, excited quarks, and heavy vector bosons can decay to top quarks alongside other standard model particles. Searches at the CERN LHC in final states with top quarks set strong constraints on the existence of such particles, and measurements of top quark associated production and branching fractions constrain models with flavor-changing neutral currents. [...]
CMS-CR-2018-043.- Geneva : CERN, 2018 - 5 p. Fulltext: PDF;
In : 53rd Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 17 - 24 Mar 2018

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2018-06-22
17:10
Observation of centrality-dependent acoplanarity for muon pairs produced via two-photon scattering in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with the ATLAS detector
This Letter presents a measurement of $\gamma \gamma \rightarrow \mu^{+} \mu^{-}$ production in Pb+Pb collisions recorded by the ATLAS detector at the Large Hadron Collider at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with an integrated luminosity of 0.49 nb$^{-1}$. [...]
CERN-EP-2018-100.
- 2018.
Fulltext - Previous draft version

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2018-06-20
08:56
Search for the Higgs boson produced in association with a vector boson and decaying into two spin-zero particles in the $H \rightarrow aa \rightarrow 4b$ channel in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for exotic decays of the Higgs boson into a pair of spin-zero particles, $H \rightarrow aa$, where the $a$-boson decays into $b$-quarks promptly or with a mean proper lifetime $c\tau_a$ up to 6 mm and has a mass in the range of $20-60$ GeV, is presented. [...]
CERN-EP-2018-128 ; CERN-EP-2018-128 ; arXiv:1806.07355.
- 2018. - 48 p, 48 p.
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2018-06-19
13:54
Characterization of a depleted monolithic pixel sensors in 150 nm CMOS technology for the ATLAS Inner Tracker upgrade / Iguaz, F.J. (AIM, Saclay) ; Balli, F. (AIM, Saclay) ; Barbero, M. (Marseille, CPPM) ; Bhat, S. (Marseille, CPPM) ; Breugnon, P. (Marseille, CPPM) ; Caicedo, I. (Bonn U.) ; Chen, Z. (Marseille, CPPM) ; Degerli, Y. (AIM, Saclay) ; Godiot, S. (Marseille, CPPM) ; Guilloux, F. (AIM, Saclay) et al.
This work presents a depleted monolithic active pixel sensor (DMAPS) prototype manufactured in the LFoundry 150\,nm CMOS process. [...]
arXiv:1806.04400.
- 2 p.
Fulltext

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2018-06-13
10:12
Probing the quantum interference between singly and doubly resonant top-quark production in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
This Letter presents a normalized differential cross-section measurement in a fiducial phase-space region where interference effects between top-quark pair production and associated production of a single top quark with a $W$ boson and a $b$-quark are significant. [...]
CERN-EP-2018-087 ; CERN-EP-2018-087 ; arXiv:1806.04667.
- 2018. - 29 p, 29 p.
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2018-06-11
15:40
Search for pair production of higgsinos in final states with at least three $b$-tagged jets in $\sqrt{s} = 13$ TeV $pp$ collisions using the ATLAS detector / ATLAS Collaboration
A search for pair production of the supersymmetric partners of the Higgs boson (higgsinos $\tilde{H}$) in gauge-mediated scenarios is reported. [...]
CERN-EP-2018-050 ; arXiv:1806.04030 ; CERN-EP-2018-050.
- 2018. - 49 p, 49 p.
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2018-06-07
11:14
Higgs physics with hadronic signatures at ATLAS and CMS / Schroder, Matthias (KIT, Karlsruhe, EKP) /ATLAS and CMS Collaborations
Precise measurement of the properties of the Higgs boson is of paramount interest in order to verify the standard model nature of the Higgs sector or discover new physics. Crucial information is obtained from investigation of hadronic final states, which offer, for example, a direct probe of the couplings to top or bottom quarks. [...]
CMS-CR-2018-046.- Geneva : CERN, 2018 - 5 p. Fulltext: PDF;
In : 53rd Rencontres de Moriond on QCD and High Energy Interactions, La Thuile, Italy, 17 - 24 Mar 2018

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2018-06-07
03:22
Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for electroweak production of supersymmetric particles is performed in two-lepton and three-lepton final states using recursive jigsaw reconstruction. [...]
CERN-EP-2018-113 ; arXiv:1806.02293 ; CERN-EP-2018-113.
- 2018. - 59 p.
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2018-06-07
03:01
Operation and performance of the ATLAS Tile Calorimeter in Run 1 / ATLAS Collaboration
The Tile Calorimeter is the hadron calorimeter covering the central region of the ATLAS experiment at the Large Hadron Collider. [...]
CERN-EP-2018-062 ; arXiv:1806.02129 ; CERN-EP-2018-062.
- 2018. - 69 p.
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