Measurement of Z0-boson production at large rapidities in Pb–Pb collisions at sNN=5.02TeV

ALICE Collaboration

doi:10.1016/j.physletb.2018.03.010

Measurement of Z⁰-boson production at large rapidities in Pb–Pb collisions at s_NN=5.02TeV

ALICE Collaboration

Physics Education

Variable Energy Cyclotron Centre India
Czech Academy of Sciences
Lund University
Panjab University
CERN
Polytechnic University of Turin
Indian Institute of Technology Bombay
Korea Institute of Science and Technology Information
Yale University
Alikhanov Institute for Theoretical and Experimental Physics
GSI Helmholtz Centre for Heavy Ion Research
Universidade Estadual de Campinas
Russian Research Centre Kurchatov Institute
National Institute for Nuclear Physics
Universidad Nacional Autónoma de México
COMSATS University Islamabad
Enrico Fermi Center
University of Bologna
NASU - Bogolyubov Institute for Theoretical Physics
University of Bergen
Goethe University Frankfurt
St. Petersburg State University
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Birmingham
Heidelberg University
Creighton University
Ruder Boskovic Institute
Lawrence Berkeley National Laboratory
Nantes Université
Technische Universität München
Technical University of Munich
University of Oslo
Aligarh Muslim University
Inha University
Konkuk University

Research output: Contribution to journal › Journal article › peer-review

16 Scopus citations

Abstract

The production of Z⁰ bosons at large rapidities in Pb–Pb collisions at s_NN=5.02TeV is reported. Z⁰ candidates are reconstructed in the dimuon decay channel (Z⁰→μ⁺μ⁻), based on muons selected with pseudo-rapidity −4.0<η<−2.5 and p_T>20GeV/c. The invariant yield and the nuclear modification factor, R_AA, are presented as a function of rapidity and collision centrality. The value of R_AA for the 0–20% central Pb–Pb collisions is 0.67±0.11(stat.)±0.03(syst.)±0.06(corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions.

Original language	English
Pages (from-to)	372-383
Number of pages	12
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	780
DOIs	https://doi.org/10.1016/j.physletb.2018.03.010
State	Published - 2018.05.10

Quacquarelli Symonds(QS) Subject Topics

Physics & Astronomy

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10.1016/j.physletb.2018.03.010

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@article{3f0999949cf84e78b91108d2c009578c,

title = "Measurement of Z0-boson production at large rapidities in Pb{\textendash}Pb collisions at sNN=5.02TeV",

abstract = "The production of Z0 bosons at large rapidities in Pb{\textendash}Pb collisions at sNN=5.02TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0→μ+μ−), based on muons selected with pseudo-rapidity −4.0<η<−2.5 and pT>20GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0{\textendash}20\% central Pb{\textendash}Pb collisions is 0.67±0.11(stat.)±0.03(syst.)±0.06(corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0{\textendash}90\% centrality class and by 3σ in the 0{\textendash}20\% central collisions.",

author = "\{ALICE Collaboration\} and S. Acharya and D. Adamov{\'a} and J. Adolfsson and Aggarwal, \{M. M.\} and \{Aglieri Rinella\}, G. and M. Agnello and N. Agrawal and Z. Ahammed and Ahn, \{S. U.\} and S. Aiola and A. Akindinov and M. Al-Turany and Alam, \{S. N.\} and Albuquerque, \{D. S.D.\} and D. Aleksandrov and B. Alessandro and \{Alfaro Molina\}, R. and Y. Ali and A. Alici and A. Alkin and J. Alme and T. Alt and L. Altenkamper and I. Altsybeev and C. Andrei and D. Andreou and Andrews, \{H. A.\} and A. Andronic and M. Angeletti and V. Anguelov and C. Anson and T. Anti{\v c}i{\'c} and F. Antinori and P. Antonioli and N. Apadula and L. Aphecetche and H. Appelsh{\"a}user and S. Arcelli and R. Arnaldi and Arnold, \{O. W.\} and Arsene, \{I. C.\} and M. Arslandok and B. Audurier and A. Augustinus and R. Averbeck and Azmi, \{M. D.\} and A. Badal{\`a} and Baek, \{Y. W.\} and S. Bagnasco and Kim, \{E. J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 The Author(s)",

year = "2018",

month = may,

day = "10",

doi = "10.1016/j.physletb.2018.03.010",

language = "English",

volume = "780",

pages = "372--383",

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

issn = "0370-2693",

}

TY - JOUR

T1 - Measurement of Z0-boson production at large rapidities in Pb–Pb collisions at sNN=5.02TeV

AU - ALICE Collaboration

AU - Acharya, S.

AU - Adamová, D.

AU - Adolfsson, J.

AU - Aggarwal, M. M.

AU - Aglieri Rinella, G.

AU - Agnello, M.

AU - Agrawal, N.

AU - Ahammed, Z.

AU - Ahn, S. U.

AU - Aiola, S.

AU - Akindinov, A.

AU - Al-Turany, M.

AU - Alam, S. N.

AU - Albuquerque, D. S.D.

AU - Aleksandrov, D.

AU - Alessandro, B.

AU - Alfaro Molina, R.

AU - Ali, Y.

AU - Alici, A.

AU - Alkin, A.

AU - Alme, J.

AU - Alt, T.

AU - Altenkamper, L.

AU - Altsybeev, I.

AU - Andrei, C.

AU - Andreou, D.

AU - Andrews, H. A.

AU - Andronic, A.

AU - Angeletti, M.

AU - Anguelov, V.

AU - Anson, C.

AU - Antičić, T.

AU - Antinori, F.

AU - Antonioli, P.

AU - Apadula, N.

AU - Aphecetche, L.

AU - Appelshäuser, H.

AU - Arcelli, S.

AU - Arnaldi, R.

AU - Arnold, O. W.

AU - Arsene, I. C.

AU - Arslandok, M.

AU - Audurier, B.

AU - Augustinus, A.

AU - Averbeck, R.

AU - Azmi, M. D.

AU - Badalà, A.

AU - Baek, Y. W.

AU - Bagnasco, S.

AU - Kim, E. J.

PY - 2018/5/10

Y1 - 2018/5/10

N2 - The production of Z0 bosons at large rapidities in Pb–Pb collisions at sNN=5.02TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0→μ+μ−), based on muons selected with pseudo-rapidity −4.0<η<−2.5 and pT>20GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67±0.11(stat.)±0.03(syst.)±0.06(corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions.

AB - The production of Z0 bosons at large rapidities in Pb–Pb collisions at sNN=5.02TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0→μ+μ−), based on muons selected with pseudo-rapidity −4.0<η<−2.5 and pT>20GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67±0.11(stat.)±0.03(syst.)±0.06(corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions.

UR - https://www.scopus.com/pages/publications/85044134122

U2 - 10.1016/j.physletb.2018.03.010

DO - 10.1016/j.physletb.2018.03.010

M3 - Journal article

AN - SCOPUS:85044134122

SN - 0370-2693

VL - 780

SP - 372

EP - 383

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 Z⁰-boson production at large rapidities in Pb–Pb collisions at s_NN=5.02TeV

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