Search results for: G. Choudalakis

Items from 1 to 20 out of 198 results

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Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 5 > 1-67

Abstract Double-differential dijet cross-sections measured in pp collisions at the LHC with a 7 TeV centre-of-mass energy are presented as functions of dijet mass and half the rapidity separation of the two highest-p_T jets. These measurements are obtained using data corresponding to an integrated luminosity of 4.5 fb⁻¹, recorded by the ATLAS detector in 2011. The data are corrected for detector effects...

article

Morphology and gas transport properties of acrylic resin/bentonite nanocomposite coatings

G. Choudalakis, A.D. Gotsis

Progress in Organic Coatings > 2014 > 77 > 4 > 845-852

This is a study of the addition of hydrophilic bentonite nano-platelets in acrylic polymer resin to make nano-composite coatings. The mechanism of the dispersion of the nano-platelets during film formation and curing form aqueous suspensions is described. The morphological features of the coating and the degree of exfoliation are examined via X-ray diffraction. The impact of the solvent evaporation...

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Gas transport properties in waterborne polymer nanocomposite coatings containing organomodified clays

M. Stratigaki, G. Choudalakis, A. D. Gotsis

Journal of Coatings Technology and Research > 2014 > 11 > 6 > 899-911

Nanostructured composite coatings, consisting of phylosilicates embedded within polymer matrices, were prepared and characterized. Waterborne acrylic and polyurethane resins were employed as matrix, and hydrophilic or organically modified nanoparticles of montmorillonite as reinforcement. Emphasis in this article is put on the preparation of the coating. An overview of the major steps involved is...

article

Erratum: Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at $\sqrt{s}$ = 8 TeV proton-proton collisions using the ATLAS experiment

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-18

article

Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV in 2010

The ATLAS Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2014 > 74 > 9 > 1-32

This paper presents a study of the performance of the muon reconstruction in the analysis of proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms of reconstruction and isolation efficiencies and momentum resolutions for different classes of reconstructed muons. The results are obtained from an analysis...

article

Measurement of the production cross section of prompt J/ψ mesons in association with a W ^± boson in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 4 > 1-37

Abstract The process pp → W ^± J/ψ provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fb⁻¹ of $\sqrt{s}$ = 7 TeV pp collisions at the LHC, the first observation is made of the production of W ^± + prompt J/ψ events in hadronic collisions,...

article

The differential production cross section of the $$\phi $$ ϕ (1020) meson in $$\sqrt{s}$$ s = 7 TeV $$pp$$ p p collisions measured with the ATLAS detector

The ATLAS Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2014 > 74 > 7 > 1-21

A measurement is presented of the $$\phi \times \mathcal {BR}(\phi \rightarrow K^{+}K^{-})$$ ϕ × BR ( ϕ → K + K - ) production cross section at $$\sqrt{s}$$ s = 7 TeV using $$pp$$ p p collision data corresponding to an integrated luminosity of 383 $$\mathrm {\upmu b^{-1}}$$ μ b - 1 , collected with the ATLAS experiment at the LHC. Selection of ...

article

Measurement of the top quark pair production charge asymmetry in proton-proton collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 2 > 1-38

Abstract This paper presents a measurement of the top quark pair ( $t\overline{t}$ ) production charge asymmetry A _C using 4.7 fb⁻¹ of proton-proton collisions at a centre-of-mass energy $\sqrt{s}$ = 7 TeV collected by the ATLAS detector at the LHC. A $t\overline{t}$ -enriched sample of events with a single lepton (electron or muon), missing transverse momentum and at least four high...