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M. Fiascaris

Researcher at University of Chicago

Publications -  442
Citations -  51534

M. Fiascaris is an academic researcher from University of Chicago. The author has contributed to research in topics: Large Hadron Collider & Higgs boson. The author has an hindex of 106, co-authored 440 publications receiving 49540 citations. Previous affiliations of M. Fiascaris include Politehnica University of Bucharest & Istanbul Technical University.

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Journal ArticleDOI

Measurement of the t (t)over-bar production cross-section using e mu events with b-tagged jets in pp collisions at root s = 7 and 8 TeV with the ATLAS detector (vol 76, pg 642, 2014)

Georges Aad, +2882 more
- 23 Nov 2016 - 
TL;DR: In this article, the ATLAS measurement of the inclusive top quark pair cross-section was updated using the final 2012 luminosity calibration, which is consistent with theoretical QCD calculations at next-to-next-leading order.
Journal ArticleDOI

Underlying event characteristics and their dependence on jet size of charged-particle jet events in pp collisions at root(s)=7 TeV with the ATLAS detector

Georges Aad, +2909 more
- 09 Oct 2012 - 
TL;DR: In this paper, the authors used the antikt algorithm with radius parameter R varying between 0.2 and 1.0 to reconstruct the trajectories of the charged particle jets at the Large Hadron Collider (LHC).

Triggering on Long-Lived Neutral Particles in the ATLAS Detector

Georges Aad, +2512 more
TL;DR: In this paper, the Hidden-Valley scenario is used for exploring the challenges posed by long-lived particles with long decay paths to the trigger and the reconstruction capabilities of the ATLAS apparatus.

Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s = 7 TeV with the ATLAS detector

Georges Aad, +3001 more
Abstract: The inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton–proton collisions at a centre-of-mass energy of √ s = 7 TeV, using the ATLAS detector at the LHC. The measurements use data corresponding to an integrated luminosity of 34 pb−1. The b-jets are identified using either a lifetime-based method, where secondary decay vertices of b-hadrons in jets are reconstructed using information from the tracking detectors, or a muon-based method where the presence of a muon is used to identify semileptonic decays of b-hadrons inside jets. The inclusive b-jet cross-section is measured as a function of transverse momentum in the range 20 < pT < 400 GeV and rapidity in the range |y| < 2.1. The bb-dijet cross-section is measured as a function of the dijet invariant mass in the range 110 < mjj < 760 GeV, the azimuthal angle difference between the two jets and the angular variable χ in two dijet mass regions. The results are compared with next-to-leading-order QCD predictions. Good agreement is observed between the measured crosssections and the predictions obtained using POWHEG + Pythia. MC@NLO + Herwig shows good agreement with the measured bb-dijet cross-section. However, it does not reproduce the measured inclusive cross-section well, particularly for central b-jets with large transverse momenta.
Journal ArticleDOI

Measurement of the mass difference between top and anti-top quarks in pp collisions at √s = 7 TeV using the ATLAS detector

Georges Aad, +2911 more
- 20 Jan 2014 - 
TL;DR: In this article, a measurement of the mass difference between top and anti-top quarks is presented in a 4.7 fb(-1) data sample of proton-proton collisions at root s = 7 TeV recorded with the ATLAS detector at the...