Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector

ATLAS Collaboration

doi:10.1016/j.physletb.2014.09.020

Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector

ATLAS Collaboration

Aix-Marseille Université and CNRS/IN2P3
University of Oklahoma
Academia Sinica - Institute of Physics
Université Paris-Sud and CNRS/IN2P3
Azerbaijan National Academy of Sciences
University of Amsterdam
Oklahoma State University
Michigan State University
University of Toronto
Tel Aviv University
Technion-Israel Institute of Technology
CERN
Stockholm University
The Oskar Klein Centre
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
King's College London
AGH University of Krakow
Brookhaven National Laboratory
Yale University
Ludwig Maximilian University of Munich
Didcot
University of Belgrade
Laboratório de Instrumentação e Física Experimental de Partículas
University of Granada
University of Bern
Boston University
Joint Institute for Nuclear Research
University of Rome Tor Vergata
Lund University
The University of Tokyo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences
University of Bologna
University of Victoria BC
Université Grenoble Alpes
Instituto de Física La Plata
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Geneva
National Technical University of Athens
University of Udine
The University of Chicago
University of Birmingham
Lancaster University
University of Liverpool
University of Manchester
University of Naples Federico II
University of Copenhagen
Kobe University
Queen Mary University of London
Columbia University
High Energy Accelerator Research Organization, Tsukuba
Universidade Federal do Rio de Janeiro
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
University of Lisbon
University of Freiburg
University of Sheffield
Heidelberg University
University of Milan
National and Kapodistrian University of Athens
Technische Universität Dresden
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Moscow Engineering Physics Institute
Slovak Academy of Sciences
University of Oxford
SLAC National Accelerator Laboratory
Duke University
University of Montreal
German Electron Synchrotron
Bogazici University
Universidad Autónoma de Madrid
University of Cambridge
University of Bonn
Alikhanov Institute for Theoretical and Experimental Physics
Argonne National Laboratory
Comenius University
University of Illinois at Urbana-Champaign
University of Siegen
Czech Technical University in Prague
University of Johannesburg
TRIUMF
Roma Tre University
CEA Saclay (Commissariat a lʼEnergie Atomique)
Aristotle University of Thessaloniki
University of Rome La Sapienza
CAS - Institute of High Energy Physics
University College London
Charles University
Polish Academy of Sciences
University of Wisconsin-Madison
University of Wuppertal
Weizmann Institute of Science
University of Melbourne
University of Genoa
Max Planck Institute for Physics (Werner Heisenberg Institute)
University of California at Berkeley
Université Savoie Mont Blanc
Harvard University
University of Sussex
University of Glasgow
University of California at Santa Cruz
California State University Fresno
Laboratoire de Physique Nucléaire et de Hautes Energies
Tufts University
University of Pisa
University of Washington
Gaziantep University
Stony Brook University
McGill University
Carleton University
University of Massachusetts
University of Hassan II Casablanca
York University Toronto
University of Regina
Humboldt University of Berlin
Louisiana Tech University
Royal Holloway University of London
Radboud University Nijmegen
University of Edinburgh
University of Pittsburgh
University of Göttingen
The University of Sydney
Johannes Gutenberg University Mainz
Belarus Academy of Sciences
Czech Academy of Sciences
Lomonosov Moscow State University
Institute for High Energy Physics of National Research Centre ‘Kurchatov Institute’
Autonomous University of Barcelona
SUNY Albany
Université Clermont Auvergne
Mohamed I University
University of Texas at Arlington
Tokyo Metropolitan University
University of Oregon
University of Pennsylvania
Uppsala University
University of the Witwatersrand
Universidad Técnica Federico Santa Maria
Indiana University Bloomington
University of Bergen
Simon Fraser University
University of Oslo
Northern Illinois University
TU Dortmund University
University of Alberta
University of Valencia
Ankara University
Southern Methodist University
University of Calabria
Pontificia Universidad Católica de Chile
Universidade Federal de Juiz de Fora
Dogus University
Iowa State University
Shandong University
Nanjing University
Mohammed V University in Rabat
University of Arizona
Palacký University Olomouc
University of Iowa
University of Ljubljana
University of Pavia
University of Naples Parthenope
Institute of Particle Physics
University of California at Irvine
New York University
Ivane Javakhishvili Tbilisi State University
Universidade Federal de São João del-Rei
NOVA University Lisbon
Universidade de São Paulo
Justus Liebig University Giessen
Cadi Ayyad University
The University of Osaka
Petersburg Nuclear Physics Institute (PNPI)
University of Warwick
Peter the Great St. Petersburg Polytechnic University
University of British Columbia
Innsbruck Medical University
Ohio State University
University of Science and Technology of China
National Center for Energy, Nuclear Science and Technology
University of the Aegean
Universidad de Buenos Aires
University of New Mexico
University of Salento
ICREA
A. Alikhanian Yerevan Institute of Physics
University of Cape Town
University of Tsukuba
Nagoya University
Shinshu University
Institute of Science Tokyo
Waseda University
University of Texas at Austin
Kyoto University
University of Texas at Dallas
Adelaide University
Ilia State University
KTH Royal Institute of Technology
Kyushu University
Ochanomizu University
Manhattan College
Novosibirsk State University
Shanghai Jiao Tong University
Universidad Antonio Nariño
National Institute of Science Education and Research
Hampton University
Moscow Institute of Physics and Technology
Hiroshima Institute of Technology
Okayama University
University of Minho
Jagiellonian University in Kraków
International School for Advanced Studies
National Institute for Research and Development of Isotopic and Molecular Technologies
National University of Science and Technology POLITEHNICA Bucharest
West University of Timisoara
University of South Carolina
CNRS/IN2P3
University of Würzburg
Sun Yat-Sen University
Nagasaki Institute of Applied Science
TOBB University of Economics and Technology
Kyoto University of Education
Ritsumeikan University
Massachusetts Institute of Technology
Wigner Research Centre for Physics
Turkish Atomic Energy Authority
University of Hamburg
University of KwaZulu-Natal
Belarusian State University
Gazi University

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton–proton collisions at s=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb⁻¹. The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-k_t jet algorithm with R=0.4, that have low angular separation and form a dijet with p_T>200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σ_Z→bb¯ ^fid=2.02±0.20 (stat.) ±0.25 (syst.)±0.06 (lumi.) pb=2.02 ±0.33 pb, in good agreement with next-to-leading-order theoretical predictions.

Original language	English
Pages (from-to)	25-43
Number of pages	19
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	738
DOIs	https://doi.org/10.1016/j.physletb.2014.09.020
State	Published - 10 Nov 2014
Externally published	Yes

Keywords

Boosted bb¯ topologies
LHC

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10.1016/j.physletb.2014.09.020

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@article{760382d112f34eda81b2798b88ea946d,

title = "Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector",

abstract = "This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton–proton collisions at s=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb−1. The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-kt jet algorithm with R=0.4, that have low angular separation and form a dijet with pT>200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σZ→bb¯ fid=2.02±0.20 (stat.) ±0.25 (syst.)±0.06 (lumi.) pb=2.02 ±0.33 pb, in good agreement with next-to-leading-order theoretical predictions.",

keywords = "Boosted bb¯ topologies, LHC",

author = "\{ATLAS Collaboration\} and G. Aad and B. Abbott and J. Abdallah and \{Abdel Khalek\}, S. and O. Abdinov and R. Aben and B. Abi and M. Abolins and AbouZeid, \{O. S.\} and H. Abramowicz and H. Abreu and R. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and L. Adamczyk and Adams, \{D. L.\} and J. Adelman and S. Adomeit and T. Adye and T. Agatonovic-Jovin and Aguilar-Saavedra, \{J. A.\} and M. Agustoni and Ahlen, \{S. P.\} and F. Ahmadov and G. Aielli and H. Akerstedt and {\AA}kesson, \{T. P.A.\} and G. Akimoto and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and S. Albrand and \{Alconada Verzini\}, \{M. J.\} and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and G. Alexander and G. Alexandre and T. Alexopoulos and M. Alhroob and G. Alimonti and L. Alio and J. Alison and Allbrooke, \{B. M.M.\} and Allison, \{L. J.\} and Allport, \{P. P.\} and J. Almond and A. Aloisio and A. Alonso and L. Yuan",

note = "Publisher Copyright: {\textcopyright} 2014",

year = "2014",

month = nov,

day = "10",

doi = "10.1016/j.physletb.2014.09.020",

language = "英语",

volume = "738",

pages = "25--43",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector

AU - ATLAS Collaboration

AU - Aad, G.

AU - Abbott, B.

AU - Abdallah, J.

AU - Abdel Khalek, S.

AU - Abdinov, O.

AU - Aben, R.

AU - Abi, B.

AU - Abolins, M.

AU - AbouZeid, O. S.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abreu, R.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adamczyk, L.

AU - Adams, D. L.

AU - Adelman, J.

AU - Adomeit, S.

AU - Adye, T.

AU - Agatonovic-Jovin, T.

AU - Aguilar-Saavedra, J. A.

AU - Agustoni, M.

AU - Ahlen, S. P.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akerstedt, H.

AU - Åkesson, T. P.A.

AU - Akimoto, G.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albrand, S.

AU - Alconada Verzini, M. J.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexandre, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Alimonti, G.

AU - Alio, L.

AU - Alison, J.

AU - Allbrooke, B. M.M.

AU - Allison, L. J.

AU - Allport, P. P.

AU - Almond, J.

AU - Aloisio, A.

AU - Alonso, A.

AU - Yuan, L.

PY - 2014/11/10

Y1 - 2014/11/10

N2 - This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton–proton collisions at s=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb−1. The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-kt jet algorithm with R=0.4, that have low angular separation and form a dijet with pT>200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σZ→bb¯ fid=2.02±0.20 (stat.) ±0.25 (syst.)±0.06 (lumi.) pb=2.02 ±0.33 pb, in good agreement with next-to-leading-order theoretical predictions.

AB - This Letter reports the observation of a high transverse momentum Z→bb¯ signal in proton–proton collisions at s=8 TeV and the measurement of its production cross section. The data analysed were collected in 2012 with the ATLAS detector at the LHC and correspond to an integrated luminosity of 19.5 fb−1. The Z→bb¯ decay is reconstructed from a pair of b-tagged jets, clustered with the anti-kt jet algorithm with R=0.4, that have low angular separation and form a dijet with pT>200 GeV. The signal yield is extracted from a fit to the dijet invariant mass distribution, with the dominant, multi-jet background mass shape estimated by employing a fully data-driven technique that reduces the dependence of the analysis on simulation. The fiducial cross section is determined to be σZ→bb¯ fid=2.02±0.20 (stat.) ±0.25 (syst.)±0.06 (lumi.) pb=2.02 ±0.33 pb, in good agreement with next-to-leading-order theoretical predictions.

KW - Boosted bb¯ topologies

KW - LHC

UR - https://www.scopus.com/pages/publications/85040634121

U2 - 10.1016/j.physletb.2014.09.020

DO - 10.1016/j.physletb.2014.09.020

M3 - 文章

AN - SCOPUS:85040634121

SN - 0370-2693

VL - 738

SP - 25

EP - 43

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Measurement of the cross section of high transverse momentum Z→bb¯ production in proton–proton collisions at √s=8 TeV with the ATLAS detector

Abstract

Keywords

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