Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV

ATLAS Collaboration

doi:10.1140/epjc/s10052-020-7606-6

Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV

ATLAS Collaboration

University Politehnica of Bucharest
Ibn Tofail University
Dep Física and CEFITEC of Faculdade de Ciências e Tecnologia
NOVA University Lisbon
University of Lisbon
Department of Physics
Universidad Andrés Bello
A. Alikhanian Yerevan Institute of Physics
Mohamed I University
Aix-Marseille Université
University of Oklahoma
University of Massachusetts
University of Adelaide
Azerbaijan National Academy of Sciences
Université Paris-Saclay
Royal Holloway University of London
University of Toronto
University of Copenhagen
University of Sussex
Tel Aviv University
Technion-Israel Institute of Technology
Argonne National Laboratory
National Institute for Nuclear Physics
Abdus Salam International Centre for Theoretical Physics
The University of Tokyo
Johannes Gutenberg University Mainz
AGH University of Science and Technology
Northern Illinois University
Ludwig Maximilian University of Munich
Bogazici University
Rutherford Appleton Laboratory
University of California at Santa Cruz
Alexandru Ioan Cuza University of Iaşi
Laboratório de Instrumentação e Física Experimental de Partículas-LIP
University of Granada
Joint Institute for Nuclear Research
University of Rome Tor Vergata
Kyoto University
Lund University
University of Geneva
RAS - P.N. Lebedev Physics Institute
University of Bologna
University of Victoria BC
Consejo Nacional de Investigaciones Científicas y Técnicas
Radboud University Nijmegen
CERN
Horia Hulubei National Institute of Physics and Nuclear Engineering
Humboldt University of Berlin
National Technical University of Athens
Czech Technical University in Prague
The University of Chicago
University of Washington
University of Oregon
University of Birmingham
University of Naples Federico II
University of Glasgow
University of Valencia
Universidade Federal do Rio de Janeiro
McGill University
University of Oxford
Brandeis University
University of Michigan, Ann Arbor
University of Coimbra
German Electron Synchrotron
Iowa State University
University of Sheffield
Université Paris-Saclay
University of Texas at Austin
Heidelberg University
University of Bern
University of Milan
Université Clermont Auvergne
University of Amsterdam
Columbia University
RAS - Budker Institute of Nuclear Physics
Novosibirsk State University
University of California at Irvine
High Energy Accelerator Research Organization, Tsukuba
Michigan State University
Duke University
University of Montreal
University of Iowa
Queen Mary University of London
Alikhanov Institute for Theoretical and Experimental Physics
Harvard University
Uppsala University
Brookhaven National Laboratory
Comenius University
University of Cape Town
University of Illinois
University of Siegen
University of Science and Technology of China
CAS - Institute of High Energy Physics
York University
University of Salento
University of Rome La Sapienza
Cracow
Simon Fraser University
Yale University
University of Texas at Arlington
University of Sydney
Weizmann Institute of Science
University of Bonn
University of Wisconsin-Madison
University of Wuppertal
University of Melbourne
University of Genoa
Max Planck Institute for Physics (Werner Heisenberg Institute)
SLAC National Accelerator Laboratory
Shanghai Jiao Tong University
Lawrence Berkeley National Laboratory
Universidad Autónoma de Madrid
Lancaster University
Mohammed V University in Rabat
University of Cambridge
California State University Long Beach
Ohio State University
Sorbonne Université
Tufts University
University of Göttingen
University of Freiburg
Gaziantep University
Bahcesehir University
Stony Brook University
Innsbruck Medical University
University College London
Carleton University
National and Kapodistrian University of Athens
Moscow Engineering Physics Institute
University of Hassan II Casablanca
Université Grenoble Alpes
University of Arizona
Stockholm University
Oskar Klein Centre
University of Manchester
University of Pittsburgh
University of Pisa
Technische Universität Dresden
Boston University
Pontificia Universidad Católica de Chile
Lomonosov Moscow State University
University of Liverpool
Institute for High Energy Physics
Institute for High Energy Physics
Universidad de Buenos Aires
University of Johannesburg
Tokyo Metropolitan University
Universidad Técnica Federico Santa Maria
Slovak Academy of Sciences
University of Bergen
University of Oslo
TU Dortmund University
Academia Sinica - Institute of Physics
SUNY Albany
Ankara University
Indiana University Bloomington
Oklahoma State University
University of Calabria
Charles University
University of Minho
Istanbul Bilgi University
Roma Tre University
Universidade Federal de Juiz de Fora
Tbilisi State University
TRIUMF
University of Pennsylvania School of Arts and Sciences
Nanjing University
Tsinghua University
Kobe University
Chinese University of Hong Kong
University of Chinese Academy of Sciences
National Tsing Hua University
Aristotle University of Thessaloniki
Czech Academy of Sciences
Palacký University Olomouc
University of Ljubljana
University of Edinburgh
University of Udine
University of British Columbia
New York University
Shandong University
Southern Methodist University
Universidade Federal de São João del-Rei
Universidade de São Paulo
Justus Liebig University Giessen
Cadi Ayyad University
University of Warwick
Russian Research Centre Kurchatov Institute
University of Pavia
INFN-TIFPA
University of Trento
Nagasaki Institute of Applied Science
University of Alberta
West University of Timisoara
University of New Mexico
University of Tsukuba
University of Würzburg
Belarus Academy of Sciences
Shinshu University
University of the Witwatersrand
Osaka University
Nagoya University
Belarusian State University
Tokyo Institute of Technology
University of Texas at Dallas
Ivane Javakhishvili Tbilisi State University
Waseda University
Kyushu University
Tomsk State University
Ochanomizu University
University of Belgrade
Istanbul Aydin University
Hong Kong University of Science and Technology
The University of Hong Kong
Universidad Antonio Nariño
KTH Royal Institute of Technology
Hiroshima Institute of Technology
Okayama University
Jagiellonian University in Kraków
National Institute for Research and Development of Isotopic and Molecular Technologies
IN2P3 - Institut National de Physique Nucléaire et de Physique Des Particules
Louisiana Tech University
TOBB University of Economics and Technology
Kyoto University of Education
Transilvania University of Brasov

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

16 Citations (Scopus)

Abstract

Results are presented from the measurement by ATLAS of long-range (| Δ η| > 2) dihadron angular correlations in s=8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb ^{- 1} of s=8 TeV data recorded during Run 1 of the LHC and 36.1 fb ^{- 1} of s=13 TeV data recorded during Run 2. Two-particle correlation functions are measured as a function of relative azimuthal angle over the relative pseudorapidity range 2 < | Δ η| < 5 for different intervals of charged-particle multiplicity and transverse momentum. The measurements are corrected for the presence of background charged particles generated by collisions that occur during one passage of two colliding proton bunches in the LHC. Contributions to the two-particle correlation functions from hard processes are removed using a template-fitting procedure. Sinusoidal modulation in the correlation functions is observed and quantified by the second Fourier coefficient of the correlation function, v_{2 , 2}, which in turn is used to obtain the single-particle anisotropy coefficient v₂. The v₂ values in the Z-tagged events, integrated over 0.5 < p_T< 5 GeV, are found to be independent of multiplicity and s, and consistent within uncertainties with previous measurements in inclusive pp collisions. As a function of charged-particle p_T, the Z-tagged and inclusive v₂ values are consistent within uncertainties for p_T< 3 GeV.

Original language	English
Article number	64
Journal	European Physical Journal C
Volume	80
Issue number	1
DOIs	https://doi.org/10.1140/epjc/s10052-020-7606-6
Publication status	Published - 1 Jan 2020

ASJC Scopus subject areas

Engineering (miscellaneous)
Physics and Astronomy (miscellaneous)

Access to Document

10.1140/epjc/s10052-020-7606-6

Cite this

@article{06c9870c3d594d6bb979d462c910bb35,

title = "Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV",

abstract = "Results are presented from the measurement by ATLAS of long-range (| Δ η| > 2) dihadron angular correlations in s=8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb - 1 of s=8 TeV data recorded during Run 1 of the LHC and 36.1 fb - 1 of s=13 TeV data recorded during Run 2. Two-particle correlation functions are measured as a function of relative azimuthal angle over the relative pseudorapidity range 2 < | Δ η| < 5 for different intervals of charged-particle multiplicity and transverse momentum. The measurements are corrected for the presence of background charged particles generated by collisions that occur during one passage of two colliding proton bunches in the LHC. Contributions to the two-particle correlation functions from hard processes are removed using a template-fitting procedure. Sinusoidal modulation in the correlation functions is observed and quantified by the second Fourier coefficient of the correlation function, v2 , 2, which in turn is used to obtain the single-particle anisotropy coefficient v2. The v2 values in the Z-tagged events, integrated over 0.5 < pT< 5 GeV, are found to be independent of multiplicity and s, and consistent within uncertainties with previous measurements in inclusive pp collisions. As a function of charged-particle pT, the Z-tagged and inclusive v2 values are consistent within uncertainties for pT< 3 GeV.",

author = "\{ATLAS Collaboration\} and M. Aaboud and G. Aad and B. Abbott and Abbott, \{D. C.\} and O. Abdinov and B. Abeloos and Abhayasinghe, \{D. K.\} and Abidi, \{S. H.\} and AbouZeid, \{O. S.\} and Abraham, \{N. L.\} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, \{B. S.\} and S. Adachi and L. Adam and \{Adam Bourdarios\}, C. and L. Adamczyk and L. Adamek and J. Adelman and M. Adersberger and A. Adiguzel and T. Adye and Affolder, \{A. A.\} and Y. Afik and C. Agapopoulou and C. Agheorghiesei and Aguilar-Saavedra, \{J. A.\} and F. Ahmadov and G. Aielli and S. Akatsuka and {\AA}kesson, \{T. P.A.\} and E. Akilli and Akimov, \{A. V.\} and Alberghi, \{G. L.\} and J. Albert and \{Alconada Verzini\}, \{M. J.\} and S. Alderweireldt and M. Aleksa and Aleksandrov, \{I. N.\} and C. Alexa and D. Alexandre and T. Alexopoulos and M. Alhroob and B. Ali and G. Alimonti and J. Alison and Connell, \{S. H.\} and N. Govender and L. Truong",

note = "Publisher Copyright: {\textcopyright} 2020, CERN for the benefit of the ATLAS collaboration.",

year = "2020",

month = jan,

day = "1",

doi = "10.1140/epjc/s10052-020-7606-6",

language = "English",

volume = "80",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer Nature",

number = "1",

}

TY - JOUR

T1 - Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV

AU - ATLAS Collaboration

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abbott, D. C.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - AbouZeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adachi, S.

AU - Adam, L.

AU - Adam Bourdarios, C.

AU - Adamczyk, L.

AU - Adamek, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agapopoulou, C.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Alconada Verzini, M. J.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexandre, D.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Ali, B.

AU - Alimonti, G.

AU - Alison, J.

AU - Connell, S. H.

AU - Govender, N.

AU - Truong, L.

PY - 2020/1/1

Y1 - 2020/1/1

N2 - Results are presented from the measurement by ATLAS of long-range (| Δ η| > 2) dihadron angular correlations in s=8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb - 1 of s=8 TeV data recorded during Run 1 of the LHC and 36.1 fb - 1 of s=13 TeV data recorded during Run 2. Two-particle correlation functions are measured as a function of relative azimuthal angle over the relative pseudorapidity range 2 < | Δ η| < 5 for different intervals of charged-particle multiplicity and transverse momentum. The measurements are corrected for the presence of background charged particles generated by collisions that occur during one passage of two colliding proton bunches in the LHC. Contributions to the two-particle correlation functions from hard processes are removed using a template-fitting procedure. Sinusoidal modulation in the correlation functions is observed and quantified by the second Fourier coefficient of the correlation function, v2 , 2, which in turn is used to obtain the single-particle anisotropy coefficient v2. The v2 values in the Z-tagged events, integrated over 0.5 < pT< 5 GeV, are found to be independent of multiplicity and s, and consistent within uncertainties with previous measurements in inclusive pp collisions. As a function of charged-particle pT, the Z-tagged and inclusive v2 values are consistent within uncertainties for pT< 3 GeV.

AB - Results are presented from the measurement by ATLAS of long-range (| Δ η| > 2) dihadron angular correlations in s=8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb - 1 of s=8 TeV data recorded during Run 1 of the LHC and 36.1 fb - 1 of s=13 TeV data recorded during Run 2. Two-particle correlation functions are measured as a function of relative azimuthal angle over the relative pseudorapidity range 2 < | Δ η| < 5 for different intervals of charged-particle multiplicity and transverse momentum. The measurements are corrected for the presence of background charged particles generated by collisions that occur during one passage of two colliding proton bunches in the LHC. Contributions to the two-particle correlation functions from hard processes are removed using a template-fitting procedure. Sinusoidal modulation in the correlation functions is observed and quantified by the second Fourier coefficient of the correlation function, v2 , 2, which in turn is used to obtain the single-particle anisotropy coefficient v2. The v2 values in the Z-tagged events, integrated over 0.5 < pT< 5 GeV, are found to be independent of multiplicity and s, and consistent within uncertainties with previous measurements in inclusive pp collisions. As a function of charged-particle pT, the Z-tagged and inclusive v2 values are consistent within uncertainties for pT< 3 GeV.

UR - https://www.scopus.com/pages/publications/85078365024

U2 - 10.1140/epjc/s10052-020-7606-6

DO - 10.1140/epjc/s10052-020-7606-6

M3 - Article

AN - SCOPUS:85078365024

SN - 1434-6044

VL - 80

JO - European Physical Journal C

JF - European Physical Journal C

IS - 1

M1 - 64

ER -

Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this