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Stefan Simion

Researcher at Université Paris-Saclay

Publications -  845
Citations -  71724

Stefan Simion is an academic researcher from Université Paris-Saclay. The author has contributed to research in topics: Large Hadron Collider & Higgs boson. The author has an hindex of 117, co-authored 722 publications receiving 65180 citations. Previous affiliations of Stefan Simion include University of Paris-Sud & CERN.

Papers
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Measurement of the Inclusive Jet Cross-Section in pp Collisions at √s=2.76 TeV and Comparison to the Inclusive Jet Cross-Section at √s=7 TeV Using the ATLAS Detector

Georges Aad, +2881 more
TL;DR: In this paper, the authors presented the double-differential cross-section of the jet transverse momentum and the dimensionless quantity x(T) = 2p(T)/root s, in bins of jet rapidity.
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Measurement of the W boson polarization in top quark decays with the ATLAS detector

Georges Aad, +3008 more
TL;DR: In this paper, measurements of the polarization of W bosons in top quark decays, derived from ttbar events with missing transverse momentum, one charged lepton and at least four jets, were presented.
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Measurements of normalized differential cross sections for tt¯ production in pp collisions at √(s)=7 TeV using the ATLAS detector

Georges Aad, +2857 more
- 13 Oct 2014 - 
Abstract: Measurements of normalized differential cross sections for top-quark pair production are presented as a function of the top-quark transverse momentum, and of the mass, transverse momentum, and rapidity of the t (t) over bar system, in proton proton collisions at a center-of-mass energy of root s = 7 TeV. The data set corresponds to an integrated luminosity of 4.6 fb(-1), recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Events are selected in the lepton jets channel, requiring exactly one lepton and at least four jets with at least one of the jets tagged as originating from a b-quark. The measured spectra are corrected for detector efficiency and resolution effects and are compared to several Monte Carlo simulations and theory calculations. The results are in fair agreement with the predictions in a wide kinematic range. Nevertheless, data distributions are softer than predicted for higher values of the mass of the t (t) over bar system and of the top-quark transverse momentum. The measurements can also discriminate among different sets of parton distribution functions.
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Search for a high-mass Higgs boson decaying to a W boson pair in pp collisions at √s = 8 TeV with the ATLAS detector

Georges Aad, +2904 more
TL;DR: In this article, a search for a high-mass Higgs boson H is performed in the H -> WW -> l nu l nu and H-> WW-> l nu qq decay channels using pp collision data corresponding to an integrated luminosity.
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Evidence for the associated production of a W boson and a top quark in ATLAS at √s = 7 TeV

Georges Aad, +2856 more
- 17 Sep 2012 - 
TL;DR: In this article, the authors presented evidence for the associated production of a W boson and a top quark using 2.05 fb(-1) of pp collision data at root s = 7 TeV accumulated with the ATLAS detector at the LHC.