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CERN Document Server Sök i 441 journaler efter:  1 - 10nästaslut  gå till journal: Sökningen tog 1.46 sekunder. 
1.
Monte-Carlo simulation of positronium laser excitation and anti-hydrogen formation via charge exchange / AEgIS Collaboration
The AEgIS experiment aims at producing antihydrogen (and eventually measuring the effects of the Earth gravitational field on it) with a method based on the charge exchange reaction between antiproton and Rydberg positronium. To be precise, antiprotons are delivered by the CERN Antiproton Decelerator (AD) and are trapped in a multi-ring Penning trap, while positronium is produced by a nanoporous silica target and is excited to Rydberg states by means of a two steps laser excitation. [...]
2019 - 11 p. - Published in : Hyperfine Interact. 240 (2019) 18
In : 13th International Conference on Low Energy Antiproton Physics, Paris, France, 12 - 16 Mar 2018, pp.18
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2.
Imaging a positronium cloud in a 1 Tesla / Camper, Antoine (CERN) ; Aghion, Stefano (Milan Polytechnic ; INFN, Milan) ; Amsler, Claude (Stefan Meyer Inst. Subatomare Phys.) ; Antonello, Massimiliano (INFN, Milan ; Insubria U., Como) ; Belov, Alexander (Moscow, INR) ; Bonomi, Germano (INFM, Brescia ; INFN, Pavia) ; Brusa, Roberto (Trento U. ; TIFPA-INFN, Trento) ; Caccia, Massimo (INFN, Milan ; Insubria U., Como) ; Caravita, Ruggero (CERN) ; Castelli, Fabrizio (INFN, Milan ; Milan U.) et al.
We report on recent developments in positronium work in the frame of antihydrogen production through charge exchange in the AEgIS collaboration [1]. In particular, we present a new technique based on spatially imaging a cloud of positronium by collecting the positrons emitted by photoionization. [...]
2019 - 7 p. - Published in : EPJ Web Conf. 198 (2019) 00004 Fulltext: PDF;
In : Quantum Technology International Conference 2018, Paris, France, 5 - 7 Sep 2018, pp.00004
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3.
Compression of a mixed antiproton and electron non-neutral plasma to high densities / Aghion, Stefano (Milan Polytechnic ; INFN, Milan) ; Amsler, Claude (Stefan Meyer Inst. Subatomare Phys.) ; Bonomi, Germano (Brescia U. ; INFN, Pavia) ; Brusa, Roberto S (Trento U. ; INFN, Trento) ; Caccia, Massimo (INFN, Milan ; Insubria U., Como) ; Caravita, Ruggero (Genoa U. ; INFN, Genoa) ; Castelli, Fabrizio (INFN, Milan ; Milan U.) ; Cerchiari, Giovanni (Heidelberg, Max Planck Inst.) ; Comparat, Daniel (LAC, Orsay) ; Consolati, Giovanni (Milan Polytechnic ; INFN, Milan) et al.
We describe a multi-step “rotating wall” compression of a mixed cold antiproton–electron non-neutral plasma in a 4.46 T Penning–Malmberg trap developed in the context of the AEḡIS experiment at CERN. Such traps are routinely used for the preparation of cold antiprotons suitable for antihydrogen production. [...]
2018 - 11 p. - Published in : Eur. Phys. J. D 72 (2018) 76
- Published in : Eur. Phys. J. D 73 (2019) 73 Erratum: PDF; Fulltext: PDF;
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4.
Measurement of jet $p_{\mathrm{T}}$ correlations in Pb+Pb and $pp$ collisions at $\sqrt{s_{\mathrm{NN}}}=2.76\textrm{ Te\kern -0.1em V}$ with the ATLAS detector / ATLAS Collaboration
Measurements of dijet $p_{\mathrm{T}}$ correlations in Pb+Pb and $pp$ collisions at a nucleon--nucleon centre-of-mass energy of $\sqrt{s_{\mathrm{NN}}}=2.76\textrm{ Te\kern -0.1em V}$ are presented. The measurements are performed with the ATLAS detector at the Large Hadron Collider using Pb+Pb and $pp$ data samples corresponding to integrated luminosities of 0.14 nb$^{-1}$ and 4.0 pb$^{-1}$, respectively. [...]
arXiv:1706.09363; CERN-EP-2017-054.- Geneva : CERN, 2017-11-10 - 24 p. - Published in : Phys. Lett. B 774 (2017) 379-402 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
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5.
Femtoscopy with identified charged pions in proton-lead collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV with ATLAS / ATLAS Collaboration
Bose-Einstein correlations between identified charged pions are measured for $p$+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=5.02$ TeV using data recorded by the ATLAS detector at the LHC corresponding to a total integrated luminosity of $28~\mathrm{nb}^{-1}$. Pions are identified using ionization energy loss measured in the pixel detector. [...]
arXiv:1704.01621; CERN-EP-2017-004.- Geneva : CERN, 2017-12-28 - 38 p. - Published in : Phys. Rev. C 96 (2017) 064908 Fulltext: PDF; External link: Previous draft version
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6.
Measurements of electroweak $Wjj$ production and constraints on anomalous gauge couplings with the ATLAS detector / ATLAS Collaboration
Measurements of the electroweak production of a $W$ boson in association with two jets at high dijet invariant mass are performed using $\sqrt{s} = 7$ and $8$ TeV proton--proton collision data produced by the Large Hadron Collider, corresponding respectively to 4.7 and 20.2 fb$^{-1}$ of integrated luminosity collected by the ATLAS detector. The measurements are sensitive to the production of a $W$ boson via a triple-gauge-boson vertex and include both the fiducial and differential cross sections of the electroweak process..
arXiv:1703.04362; CERN-EP-2017-008.- Geneva : CERN, 2017-07-17 - 103 p. - Published in : Eur. Phys. J. C 77 (2017) 474 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External links: Figures, tables and other information; Rivet analyses reference
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7.
Measurement of the $t\bar{t}$ production cross section in the $\tau$ + jets final state in $pp$ collisions at $\sqrt{s}=8$ TeV using the ATLAS detector / ATLAS Collaboration
A measurement of the inclusive $pp\to t\bar{t}+X$ production cross section in the $\tau+{\rm jets}$ final state using only the hadronic decays of the $\tau$ lepton is presented. The measurement is performed using 20.2 fb$^{-1}$ of proton-proton collision data recorded at a center-of-mass energy of $\sqrt{s}=8$ TeV with the ATLAS detector at the Large Hadron Collider. [...]
arXiv:1702.08839; CERN-EP-2016-288.- Geneva : CERN, 2017-04-07 - 26 p. - Published in : Phys. Rev. D 95 (2017) 072003 APS Open Access article: PDF; Fulltext: arXiv:1702.08839 - PDF; 10.1103_PhysRevD.95.072003 - PDF; External link: Figures, tables and other information
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8.
Probing the $Wtb$ vertex structure in $t$-channel single-top-quark production and decay in $pp$ collisions at $\sqrt{\mathrm{s}}=8$ TeV with the ATLAS detector / ATLAS Collaboration
To probe the $Wtb$ vertex structure, top-quark and $W$-boson polarisation observables are measured from $t$-channel single-top-quark events produced in proton--proton collisions at a centre-of-mass energy of 8 TeV. The dataset corresponds to an integrated luminosity of 20.2 fb$^{-1}$, recorded with the ATLAS detector at the LHC. [...]
arXiv:1702.08309; CERN-EP-2017-011.- Geneva : CERN, 2017-04-20 - 48 p. - Published in : JHEP 04 (2017) 124 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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9.
Top-quark mass measurement in the all-hadronic $t\bar{t}$ decay channel at $\sqrt{s}$ = 8 TeV with the ATLAS detector / ATLAS Collaboration
The top-quark mass is measured in the all-hadronic top-antitop quark decay channel using proton-proton collisions at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV with the ATLAS detector at the CERN Large Hadron Collider. The data set used in the analysis corresponds to an integrated luminosity of 20.2 fb$^{-1}$. [...]
arXiv:1702.07546; CERN-EP-2016-264.- Geneva : CERN, 2017-09-25 - 39 p. - Published in : JHEP 09 (2017) 118 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Previous draft version
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10.
Performance of the ATLAS Transition Radiation Tracker in Run 1 of the LHC: tracker properties / ATLAS Collaboration
The tracking performance parameters of the ATLAS Transition Radiation Tracker (TRT) as part of the ATLAS inner detector are described in this paper for different data-taking conditions in proton--proton, proton--lead and lead--lead collisions at the Large Hadron Collider (LHC). The performance is studied using data collected for different data-taking conditions in proton--proton, proton--lead and lead--lead collisions at the Large Hadron Collider (LHC). [...]
arXiv:1702.06473; CERN-EP-2016-311.- Geneva : CERN, 2017-05-03 - 45 p. - Published in : JINST 12 (2017) P05002 Fulltext: arXiv:1702.06473 - PDF; 10.1088_1748-0221_12_05_P05002 - PDF; External link: Previous draft version
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