Performance of pile-up mitigation techniques for jets in [Formula: see text] collisions at [Formula: see text] TeV using the ATLAS detector

. 2016 ; 76 (11) : 581. [epub] 20161027

Status PubMed-not-MEDLINE Jazyk angličtina Země Francie Médium print-electronic

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/pmid28316490

The large rate of multiple simultaneous proton-proton interactions, or pile-up, generated by the Large Hadron Collider in Run 1 required the development of many new techniques to mitigate the adverse effects of these conditions. This paper describes 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, with a primary focus on the large 20.3 [Formula: see text] data sample collected at a centre-of-mass energy of [Formula: see text]. The energy correction techniques that incorporate sophisticated estimates of the average pile-up energy density and tracking information are presented. Jet-to-vertex association techniques are discussed and projections of performance for the future are considered. Lastly, the extension of these techniques to mitigate the effect of pile-up on jet shapes using subtraction and grooming procedures is presented.

2 Physikalisches Institut Georg August Universität Göttingen Germany

2 Physikalisches Institut Justus Liebig Universität Giessen Giessen Germany

Albert Einstein Center for Fundamental Physics and Laboratory for High Energy Physics University of Bern Bern Switzerland

B 1 Stepanov Institute of Physics National Academy of Sciences of Belarus Minsk Republic of Belarus

Budker Institute of Nuclear Physics SB RAS Novosibirsk Russia

Cavendish Laboratory University of Cambridge Cambridge UK

Center for High Energy Physics University of Oregon Eugene OR USA

Centre de Calcul de l'Institut National de Physique Nucléaire et de Physique des Particules Villeurbanne France

Centre National de l'Energie des Sciences Techniques Nucleaires Rabat Morocco

Centro de Física Nuclear da Universidade de Lisboa Lisbon Portugal

Centro de Investigaciones Universidad Antonio Narino Bogota Colombia

CERN Geneva Switzerland

CPPM Aix Marseille Université and CNRS IN2P3 Marseille France

Czech Technical University Prague Prague Czech Republic

D 5 Skobeltsyn Institute of Nuclear Physics M 5 Lomonosov Moscow State University Moscow Russia

Departament de Física de la Universitat Autònoma de Barcelona Institut de Física d'Altes Energies Barcelona Spain

Departamento de Física Pontificia Universidad Católica de Chile Santiago Chile

Departamento de Fisica Teorica C 15 Universidad Autonoma de Madrid Madrid Spain

Departamento de Fisica Teorica y del Cosmos and CAFPE Universidad de Granada Granada Spain

Departamento de Física Universidad de Buenos Aires Buenos Aires Argentina

Departamento de Física Universidad Técnica Federico Santa María Valparaiso Chile

Departamento de Fisica Universidade do Minho Braga Portugal

Department for Physics and Technology University of Bergen Bergen Norway

Department of Modern Physics University of Science and Technology of China Hefei Anhui China

Department of Particle Physics The Weizmann Institute of Science Rehovot Israel

Department of Physics and Astronomy Iowa State University Ames IA USA

Department of Physics and Astronomy Michigan State University East Lansing MI USA

Department of Physics and Astronomy Shanghai Key Laboratory for Particle Physics and Cosmology Shanghai Jiao Tong University Shanghai China

Department of Physics and Astronomy Tufts University Medford MA USA

Department of Physics and Astronomy University College London London UK

Department of Physics and Astronomy University of California Irvine Irvine CA USA

Department of Physics and Astronomy University of New Mexico Albuquerque NM USA

Department of Physics and Astronomy University of Pittsburgh Pittsburgh PA USA

Department of Physics and Astronomy University of Sheffield Sheffield UK

Department of Physics and Astronomy University of Sussex Brighton UK

Department of Physics and Astronomy University of Uppsala Uppsala Sweden

Department of Physics and Astronomy University of Victoria Victoria BC Canada

Department of Physics and Astronomy York University Toronto ON Canada

Department of Physics Ankara University Ankara Turkey

Department of Physics Aristotle University of Thessaloniki Thessaloniki Greece

Department of Physics Bogazici University Istanbul Turkey

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Department of Physics Carleton University Ottawa ON Canada

Department of Physics Dogus University Istanbul Turkey

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Department of Physics The University of Hong Kong Pokfulam Hong Kong

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Department of Physics The University of Texas at Arlington Arlington TX USA

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Department of Physics University of Alberta Edmonton AB Canada

Department of Physics University of Arizona Tucson AZ USA

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Department of Physics University of Coimbra Coimbra Portugal

Department of Physics University of Illinois Urbana IL USA

Department of Physics University of Johannesburg Johannesburg South Africa

Department of Physics University of Massachusetts Amherst MA USA

Department of Physics University of Oslo Oslo Norway

Department of Physics University of Pennsylvania Philadelphia PA USA

Department of Physics University of Toronto Toronto ON Canada

Department of Physics University of Warwick Coventry UK

Department of Physics University of Washington Seattle WA USA

Department of Physics University of Wisconsin Madison WI USA

Department of Physics Yale University New Haven CT USA

Department of Subnuclear Physics Institute of Experimental Physics of the Slovak Academy of Sciences Kosice Slovak Republic

Departments of Physics and Astronomy and Chemistry Stony Brook University Stony Brook NY USA

DESY Hamburg and Zeuthen Germany

Dipartimento di Chimica Fisica e Ambiente Università di Udine Udine Italy

Dipartimento di Fisica e Astronomia Università di Bologna Bologna Italy

Dipartimento di Fisica E Fermi Università di Pisa Pisa Italy

Dipartimento di Fisica Sapienza Università di Roma Rome Italy

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Dipartimento di Fisica Università di Roma Tor Vergata Rome Italy

Dipartimento di Matematica e Fisica Università del Salento Lecce Italy

Dipartimento di Matematica e Fisica Università Roma Tre Rome Italy

Division of Physics TOBB University of Economics and Technology Ankara Turkey

DSM IRFU Gif sur Yvette France

E Andronikashvili Institute of Physics Iv Javakhishvili Tbilisi State University Tbilisi Georgia

Electrical Circuits Department Federal University of Juiz de Fora Juiz de Fora Brazil

Enrico Fermi Institute University of Chicago Chicago IL USA

Fachbereich C Physik Bergische Universität Wuppertal Wuppertal Germany

Fachbereich Physik Universität Siegen Siegen Germany

Faculdade de Ciências Universidade de Lisboa Lisbon Portugal

Faculté des Sciences Ain Chock Réseau Universitaire de Physique des Hautes Energies Université Hassan 2 Casablanca Morocco

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Faculté des Sciences Université Mohamed Premier and LPTPM Oujda Morocco

Faculté des Sciences Université Mohammed 5 Rabat Morocco

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Institut für Astro und Teilchenphysik Leopold Franzens Universität Innsbruck Austria

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Joint Institute for Nuclear Research JINR Dubna Dubna Russia

KEK High Energy Accelerator Research Organization Tsukuba Japan

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Laboratoire de Physique Corpusculaire Clermont Université and Université Blaise Pascal and CNRS IN2P3 Clermont Ferrand France

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LAPP CNRS IN2P3 and Université Savoie Mont Blanc Annecy le Vieux France

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Niels Bohr Institute University of Copenhagen Copenhagen Denmark

Nikhef National Institute for Subatomic Physics and University of Amsterdam Amsterdam The Netherlands

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