Author
Jalal Abdallah
Other affiliations: Autonomous University of Barcelona, Spanish National Research Council, University of Pennsylvania ...read more
Bio: Jalal Abdallah is an academic researcher from University of Texas at Arlington. The author has contributed to research in topics: Large Hadron Collider & Higgs boson. The author has an hindex of 111, co-authored 552 publications receiving 57550 citations. Previous affiliations of Jalal Abdallah include Autonomous University of Barcelona & Spanish National Research Council.
Topics: Large Hadron Collider, Higgs boson, Lepton, Boson, Pair production
Papers published on a yearly basis
Papers
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Academia Sinica1, Imperial College London2, University of Lyon3, École normale supérieure de Lyon4, CERN5, Tel Aviv University6, University of Southampton7, SLAC National Accelerator Laboratory8, Durham University9, University of Melbourne10, Rutgers University11, International School for Advanced Studies12, Chinese Academy of Sciences13, Université libre de Bruxelles14, University of California, Davis15, Vrije Universiteit Brussel16, University of Freiburg17, University of Geneva18, University of Bonn19, King's College London20, University of Maryland, College Park21, University of Oxford22, Argonne National Laboratory23, Fermilab24, University of Grenoble25, University of California, Santa Barbara26, University of Malaya27, University of Oregon28, Harvard University29, Royal Holloway, University of London30, University College London31, Ohio State University32, Texas Tech University33, Brown University34, University of Amsterdam35, University of Chicago36, Rutherford Appleton Laboratory37, University of California, Irvine38, KEK39, University of Glasgow40, Lawrence Berkeley National Laboratory41, University of California, Berkeley42, University of Zurich43, University of Toronto44, University of Oklahoma45, Max Planck Society46, Weizmann Institute of Science47, New York University48, McMaster University49, Perimeter Institute for Theoretical Physics50
TL;DR: In this paper, a set of simplified models for dark matter and its interactions with the Standard Model particles are presented, and the guiding principles underpinning these simplified models are spelled out, and some suggestions for implementation are presented.
318 citations
TL;DR: The methods employed in the ATLAS experiment to correct for the impact of pile-up on jet energy and jet shapes, and for the presence of spurious additional jets, are described, with a primary focus on the large 20.3 kg-1 data sample.
Abstract: The large rate of multiple simultaneous protonproton interactions, or pile-up, generated by the Large Hadron Collider in Run 1 required the development of many new techniques to mitigate the advers ...
316 citations
TL;DR: The performance of the ATLAS muon reconstruction during the LHC run withpp collisions at s=7–8 TeV in 2011–2012 is presented, focusing mainly on data collected in 2012.
Abstract: This paper presents the performance of the ATLAS muon reconstruction during the LHC run with pp collisions at root s = 7-8 TeV in 2011-2012, focusing mainly on data collected in 2012. Measurements ...
305 citations
TL;DR: In this article, the electron reconstruction and identification efficiencies of the ATLAS detector at the LHC have been evaluated using proton-proton collision data collected in 2011 at TeV and corresponding to an integrated luminosity of 4.7 fb.
Abstract: Many of the interesting physics processes to be measured at the LHC have a signature involving one or more isolated electrons. The electron reconstruction and identification efficiencies of the ATLAS detector at the LHC have been evaluated using proton-proton collision data collected in 2011 at TeV and corresponding to an integrated luminosity of 4.7 fb. Tag-and-probe methods using events with leptonic decays of and bosons and mesons are employed to benchmark these performance parameters. The combination of all measurements results in identification efficiencies determined with an accuracy at the few per mil level for electron transverse energy greater than 30 GeV.
302 citations
Academia Sinica1, Imperial College London2, University of Lyon3, École normale supérieure de Lyon4, CERN5, Tel Aviv University6, University of Southampton7, SLAC National Accelerator Laboratory8, Durham University9, University of Melbourne10, Rutgers University11, International School for Advanced Studies12, Chinese Academy of Sciences13, Université libre de Bruxelles14, University of California, Davis15, Vrije Universiteit Brussel16, University of Freiburg17, University of Geneva18, University of Bonn19, King's College London20, University of Maryland, College Park21, University of Oxford22, Argonne National Laboratory23, Fermilab24, University of Grenoble25, University of California, Santa Barbara26, University of Malaya27, University of Oregon28, Harvard University29, Royal Holloway, University of London30, University College London31, Ohio State University32, Texas Tech University33, Brown University34, University of Amsterdam35, University of Chicago36, Rutherford Appleton Laboratory37, University of California, Irvine38, KEK39, University of Glasgow40, University of California, Berkeley41, Lawrence Berkeley National Laboratory42, University of Zurich43, University of Toronto44, University of Oklahoma45, Max Planck Society46, Weizmann Institute of Science47, New York University48, Perimeter Institute for Theoretical Physics49, McMaster University50
TL;DR: In this article, a set of simplified models for dark matter and its interactions with the Standard Model particles are presented, and the guiding principles underpinning these simplified models are spelled out, and some suggestions for implementation are presented.
Abstract: This document outlines a set of simplified models for dark matter and its interactions with Standard Model particles. It is intended to summarize the main characteristics that these simplified models have when applied to dark matter searches at the LHC, and to provide a number of useful expressions for reference. The list of models includes both s-channel and t-channel scenarios. For s-channel, spin-0 and spin-1 mediation is discussed, and also realizations where the Higgs particle provides a portal between the dark and visible sectors. The guiding principles underpinning the proposed simplified models are spelled out, and some suggestions for implementation are presented.
294 citations
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Journal Article•
28,685 citations
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TL;DR: In this paper, a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) is presented.
Abstract: Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These
9,929 citations
TL;DR: In this article, a search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7×10−9.
9,282 citations
TL;DR: MadGraph5 aMC@NLO as discussed by the authors is a computer program capable of handling all these computations, including parton-level fixed order, shower-matched, merged, in a unified framework whose defining features are flexibility, high level of parallelisation and human intervention limited to input physics quantities.
Abstract: We discuss the theoretical bases that underpin the automation of the computations of tree-level and next-to-leading order cross sections, of their matching to parton shower simulations, and of the merging of matched samples that differ by light-parton multiplicities. We present a computer program, MadGraph5 aMC@NLO, capable of handling all these computations — parton-level fixed order, shower-matched, merged — in a unified framework whose defining features are flexibility, high level of parallelisation, and human intervention limited to input physics quantities. We demonstrate the potential of the program by presenting selected phenomenological applications relevant to the LHC and to a 1-TeV e + e − collider. While next-to-leading order results are restricted to QCD corrections to SM processes in the first public version, we show that from the user viewpoint no changes have to be expected in the case of corrections due to any given renormalisable Lagrangian, and that the implementation of these are well under way.
6,509 citations
TL;DR: The current status of particle dark matter, including experimental evidence and theoretical motivations, including direct and indirect detection techniques, is discussed in this paper. But the authors focus on neutralinos in models of supersymmetry and Kaluza-Klein dark matter in universal extra dimensions.
4,614 citations