descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 01 Nov 2019Embargo end date: 01 Jan 2019 English Publisher:Springer Science and Business Media LLCJournal:The European Physical Journal C, volume 79 (issn: 1434-6044, eissn: 1434-6052,

Authors: Christoph Amelung; Alexander Gavrilyuk; Enrico Tassi; Davide Costanzo; J. Ocariz; Vincent W. S. Wong; Janina Anna Krzysiak; +193 Authors

Christoph Amelung; Alexander Gavrilyuk; Enrico Tassi; Davide Costanzo; J. Ocariz; Vincent W. S. Wong; Janina Anna Krzysiak; John Myers; Andrey Karyukhin; Pierre-Antoine Delsart; S. Schramm; Martin Rybar; Deywis Moreno; Alexander Solodkov; Ivor Fleck; Sergey Denisov; Louise Heelan; Giacomo Polesello; Kurt Brendlinger; Sophie Trincaz-Duvoid; Trisha Farooque; J. S. Yu; Julia Lynne Gonski; Karola Dette; Sergio Grancagnolo; Mariagrazia Alviggi; Cristiano David Sebastiani; Laurent Chevalier; Anna Kathryn Duncan; Miguel Villaplana Perez; John Wilson; Alessandro Mirto; Nikolina Ilic; Nikolina Ilic; Kenneth Wraight; Siqi Yang; Francesco Guescini; Ian Connelly; Lily Asquith; Marija Vranjes Milosavljevic; Calliope Louisa Sotiropoulou; Manfredi Ronzani; Lidia Smirnova; Stylianos Angelidakis; Horst Oberlack; Ludovica Aperio Bella; Marco Aurelio Diaz; David Rousseau; Shawn Patrick Mc Kee; Lotte Ansgaard Thomsen; Dingane Reward Hlaluku; Emma Winkels; K. K. Gan; Eric Drechsler; Juerg Beringer; Zachary Alden Meadows; Richard Polifka; Anna Di Ciaccio; Siegfried Bethke; Brian Moser; Florian Christoph Fischer; Lukas Heinrich; Alexey Boldyrev; Benedikt Bergmann; Maria Ines Abreu Juliao Ochoa De Castro; Chiara Arcangeletti; Andrea Ventura; Nikolai Fomin; Dominic Hirschbuehl; Yun-Ju Lu; Ladislav Chytka; Andrea Sansoni; K. Grevtsov; Mason Proffitt; John Parsons; Martin Errenst; Remco Castelijn; Nikiforos Nikiforou; Boyang Li; Maria Del Mar Capeans Garrido; Feng Lyu; Amanda Steinhebel; Maria Josefina Alconada Verzini; Martin Aleksa; Robert Leone; Robert Les; Sahal Yacoob; Eleni Myrto Asimakopoulou; G. Galster; Arthur Rene Chomont; Kazuki Todome; Giulia Rovelli; C. Wanotayaroj; L. Bryngemark; T. A. Schwarz; Anthony Keith Morley; Paul Gessinger-Befurt; Jaroslav Guenther; Thorwald Klapdor-kleingrothaus; Stephen Jiggins; Antonio Salvucci; Antonio Salvucci; Antonio Salvucci; Nikola Makovec; Orhan Cakir; Vasiliki A Mitsou; Ryunosuke Iguchi; Teresa Lenz; Namgyun Jeong; Balthasar Maria Schachtner; A. Bitadze; Beojan Stanislaus; Thomas Trefzger; Ben Smart; Antonio Policicchio; Alvaro Lopez Solis; Yuri Kulchitsky; Bo Liu; Claire Gwenlan; Steve McMahon; Anna Mastroberardino; Ke Li; Rafael Teixeira De Lima; Masahiro Morinaga; Gabriele D'amen; Andrew White; Dmitry Golubkov; Heberth Torres; T. Tashiro; Serban Constantinescu; Filippo Maria Giorgi; Dilia Maria Portillo Quintero; Yuji Minegishi; Jan Stark; A. Schoening; Yi Jiang; Tatsuo Kawamoto; Michela Paganini; Rustem Ospanov; Osamu Sasaki; Yoshihiro Shimogama; Claudia Glasman; Julian Glatzer; E. Hill; Stefano Veneziano; Aytul Adiguzel; Lamberto Luminari; Auke-Pieter Colijn; Vladimir Tikhomirov; Dennis Sperlich; Victor Araujo Ferraz; Volker Buescher; Yoshiji Yasu; Bogdan Malaescu; D. Schaefer; Wenhao Xu; Laurent Vacavant; Cherifa Sabrina Amrouche; Yohei Yamaguchi; Harshna Jivan; Maria Pilar Casado; Renat Sadykov; Raymond Brock; Natascha Savic; Lucia Pedraza Diaz; Olga Igonkina; Olga Igonkina; José Salt; Pedro Henrique Sales De Bruin; Stephanie Majewski; Migle Stankaityte; J. S. Keller; Garabed Halladjian; S. Suchek; Mazin Khader; Peter Sherwood; Sally Seidel; A. Camplani; Steffen Maeland; Ester Ricci; Yu Nakahama; Stephen Weber; Katharina Bierwagen; Stefan Popa; Francesco Lacava; Blake Burghgrave; Valerio Dao; James Ferrando; Jennifer Kathryn Roloff; Edisher Tskhadadze; Scott Snyder; Edith Knoops; Johannes Frederic Damp; Bruno Lenzi; Ralf Hertenberger; Michael Adersberger; Zdenek Dolezal; Andreas Korn; Pavel Reznicek; Andrea Gabrielli;

doi: 10.1140/epjc/s10052-019-7450-8 , 10.48550/arxiv.1907.05120 , 10.17863/cam.60365 , 10.17863/cam.54337

arXiv: http://arxiv.org/abs/1907.05120

ATLAS b-jet identification performance and efficiency measurement with $$t{\bar{t}}$$ events in pp collisions at $$\sqrt{s}=13$$ TeV

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Abstract

AbstractThe algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and the efficiency with which these algorithms identify jets containing b-hadrons is measured in collision data. The measurement uses a likelihood-based method in a sample highly enriched in $$t{\bar{t}}$$tt¯ events. The topology of the $$t \rightarrow W b$$t→Wb decays is exploited to simultaneously measure both the jet flavour composition of the sample and the efficiency in a transverse momentum range from 20 to 600 GeV. The efficiency measurement is subsequently compared with that predicted by the simulation. The data used in this measurement, corresponding to a total integrated luminosity of 80.5 $$\hbox {fb}^{-1}$$fb-1, were collected in proton–proton collisions during the years 2015–2017 at a centre-of-mass energy $$\sqrt{s}=$$s= 13 TeV. By simultaneously extracting both the efficiency and jet flavour composition, this measurement significantly improves the precision compared to previous results, with uncertainties ranging from 1 to 8% depending on the jet transverse momentum.

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Chinese University of Hong Kong
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Keywords

lepton, particle identification: efficiency, 13000 GeV-cms, standard model, 5106 Nuclear and Plasma Physics (for-2020), bottom: particle identification, jet: transverse momentum, Atomic, High Energy Physics - Experiment, Subatomär fysik, Hadron-hadron collisions ; bottom quark ; top quark, High Energy Physics - Experiment (hep-ex), Particle and Plasma Physics, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Collisions, 5107 Particle and high energy physics (for-2020), info:eu-repo/classification/ddc/530, 5107 Particle and High Energy Physics (for-2020), Quantum Physics, proton–proton collisions, 51 Physical Sciences (for-2020), ddc:530, Particle physics, VDP::Kjerne- og elementærpartikkelfysikk: 431, Particle and High Energy Physics, 0206 Quantum Physics (for), jet: flavor, ATLAS, Nuclear and Plasma Physics, Nuclear & Particles Physics, Settore FIS/01 - FISICA SPERIMENTALE, :Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP], CERN LHC Coll, Physical Sciences, LHC, jet: bottom, top: pair production, numerical calculations: Monte Carlo, jets, p p: scattering, data analysis method, topology, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Regular Article - Experimental Physics, VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431, 610, Particle and Plasma Physics (for), molecular and optical physics (for-2020), FOS: Physical sciences, ATLAS LHC b-tagging performance, LHC, ATLAS, High Energy Physics, 530, 5102 Atomic, particle identification: performance, statistical analysis, Nuclear, High Energy Physics, molecular and optical physics, High energy physics, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, ddc:500.2, 5101 Astronomical sciences (for-2020), VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431, final state: ((n)jet dilepton), hep-ex, :Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP], 500, Molecular, Nuclear & Particles Physics (science-metrix), Física, Hadron, Astronomical sciences, 0202 Atomic, Experimental High Energy Physics, p p: colliding beams, 500.2, experimental results, ddc: ddc:500.2

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