M. D. Ciobotaru

The ATLAS Experiment at the CERN Large Hadron (OK)

G. Aad, E. Abat, J. Abdallah, A. A. Abdelalim et autres

Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC).First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton …

de, ch, us, es, gb, az, pl, ca, il, fr, it, tr, se, jp, ru, gr, pt, ar, sk (code pays fourni par la source)

Jet energy measurement with the ATLAS detector in proton-proton collisions at $\sqrt{\mathrm{s}}=7\ \mathrm{TeV}$

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

The jet energy scale and its systematic uncertainty are determined for jets measured with the ATLAS detector at the LHC in proton-proton collision data at a centre-of-mass energy of √ s = 7 TeV corresponding to an integrated luminosity of 38 pb …

de, ch, us, es, gb, az, il, fr, it, tr, se, jp, ru, ca, gr, pt, ar, sk (code pays fourni par la source)

Measurement of the t-channel single top-quark production cross section in pp collisions at s=7 TeV with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres

We report a measurement of the cross section of single top-quark production in the t -channel using 1.04 fb −1 of pp collision data at s = 7 TeV recorded with the ATLAS detector at the LHC. Selected events feature one electron …

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Search for TeV-scale gravity signatures in final states with leptons and jets with the ATLAS detector at s=7 TeV

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

The production of events with multiple high transverse momentum particles including charged leptons and jets is measured, using 1.04 fb-1 of proton-proton collision data recorded by the ATLAS detector during the first half of 2011 at sqrt(s) = 7 TeV. No excess …

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Measurement of inclusive jet and dijet production in p p collisions at s = 7 TeV using the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

Inclusive jet and dijet cross sections have been measured in proton-proton collisions at a center-of-mass energy of 7 TeV using the ATLAS detector at the Large Hadron Collider. The cross sections were measured using jets clustered with the anti-${k}_{t}$ algorithm with parameters …

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Measurement of the azimuthal anisotropy for charged particle production in s N N = 2.76 TeV lead-lead collisions with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek et autres

Differential measurements of charged particle azimuthal anisotropy are presented for lead-lead collisions at $\sqrt{{s}_{NN}}=2.76$ TeV with the ATLAS detector at the LHC, based on an integrated luminosity of approximately 8 $\ensuremath{\mu}{\mathrm{b}}^{\ensuremath{-}1}$. This anisotropy is characterized via a Fourier expansion of the distribution …

de, us, es, fr, ch, gb, az, ca, il, it, pl, tr, se, jp, ru, gr, pt, ar, sk (code pays fourni par la source)

Search for Down-Type Fourth Generation Quarks with the ATLAS Detector in Events with One Lepton and Hadronically Decaying W Bosons

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

This Letter presents a search for pair production of heavy down-type quarks decaying via ${b}^{\ensuremath{'}}\ensuremath{\rightarrow}Wt$ in the $\mathrm{\text{lepton}}+\mathrm{\text{jets}}$ channel, as ${b}^{\ensuremath{'}}{\overline{b}}^{\ensuremath{'}}\ensuremath{\rightarrow}{W}^{\ensuremath{-}}t{W}^{+}\overline{t}\ensuremath{\rightarrow}b\overline{b}{W}^{+}{W}^{\ensuremath{-}}{W}^{+}{W}^{\ensuremath{-}}\ensuremath{\rightarrow}{l}^{\ifmmode\pm\else\textpm\fi{}}\ensuremath{\nu}b\overline{b}q\overline{q}q\overline{q}q\overline{q}$. In addition to requiring exactly one lepton, large missing transverse momentum, and at least six jets, the invariant mass of nearby …

de, us, es, ch, gb, az, ca, il, fr, it, pl, tr, se, jp, ru, gr, pt, ar, sk (code pays fourni par la source)

Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W→ℓν and Z→ℓℓ Cross Sections

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

A QCD analysis is reported of ATLAS data on inclusive ${W}^{\ifmmode\pm\else\textpm\fi{}}$ and $Z$ boson production in $pp$ collisions at the LHC, jointly with $ep$ deep-inelastic scattering data from HERA. The ATLAS data exhibit sensitivity to the light quark sea composition and magnitude …

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Search for heavy neutrinos and right-handed W bosons in events with two leptons and jets in pp collisions at $\sqrt{s} = 7~\mathrm{TeV}$ with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

Abstract This letter reports on a search for hypothetical heavy neutrinos, N, and right-handed gauge bosons, WR, in events with high transverse momentum objects which include two reconstructed leptons and at least one hadronic jet. The results were obtained from data corresponding …

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Forward-backward correlations and charged-particle azimuthal distributions in pp interactions using the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

Abstract Using inelastic proton-proton interactions at $ \sqrt {s} = 900 $ GeV and 7 TeV, recorded by the ATLAS detector at the LHC, measurements have been made of the correlations between forward and backward charged-particle multiplicities and, for the first time, …

de, us, es, ch, gb, az, pl, ca, il, fr, it, tr, se, jp, ru, gr, pt, ar, sk (code pays fourni par la source)

Search for pair-produced heavy quarks decaying to Wq in the two-lepton channel at √(s)=7 TeV with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim et autres

A search is presented for heavy-quark pair production (QQ_) under the decay hypothesis Q___W+qW-__ with q=d, s, b for up-type Q or q=u, c for down-type Q. The search is performed with 1.04fb-1 of integrated luminosity from pp collisions at ís=7TeV collected …