Measurement of the Z -Boson Mass

(LHCb Collaboration)

doi:10.1103/ydn7-qx1d

Measurement of the Z -Boson Mass

(LHCb Collaboration)

National Institute for Subatomic Physics
University of Warwick
University of Zurich
University of Liverpool
Syracuse University
Instituto Galego de Física de Altas Enerxías (IGFAE)
University of Bristol
University of Glasgow
Uppsala University
Université Paris-Saclay
University of Michigan, Ann Arbor
Université Clermont Auvergne
National Institute for Nuclear Physics
TU Dortmund University
Lamarr Institute for Machine Learning and Artificial Intelligence
CERN
University of Manchester
University of Cambridge
Sorbonne Université
Universidade Federal do Rio de Janeiro
Peking University
University of Milan - Bicocca
University of Chinese Academy of Sciences
University of Rome Tor Vergata
Consejo Nacional de Rectores (CONARE)
Authors Affiliated with An Institute Formerly Covered by A Cooperation Agreement with Cern
CPPM
Swiss Federal Institute of Technology Lausanne
Massachusetts Institute of Technology
University of Oxford
Heidelberg University
Laboratoire Leprince-Ringuet
Pontifícia Universidade Católica do Rio de Janeiro
University of Edinburgh
AGH University of Krakow
CAS - Institute of High Energy Physics
Centro Brasileiro de Pesquisas Físicas
Ramon Llull University
Kyiv National Taras Shevchenko University
Henryk Niewodniczanski Institute of Nuclear Physics of the Polish Academy of Sciences
University of Bonn
Imperial College London
Université Savoie Mont Blanc
University of Modena and Reggio Emilia
University of Victoria BC
Los Alamos National Laboratory
Maastricht University
Monash University
Cracow University of Technology
Ohio State University
University of Padua
Tsinghua University
Wuhan University
University of Ferrara
University of Barcelona
Facultad de Ciencias Fisicas
University of Bologna
University of Genoa
University of Milan
NASU - Institute of Nuclear Research
University of A Coruna
Horia Hulubei National Institute of Physics and Nuclear Engineering
University of Cincinnati
National Autonomous University of Honduras
Central China Normal University
Hunan University
University of Cagliari
University of Groningen
Centro Federal de Educação Tecnológica Celso Suckow da Fonseca
University of Bari
Eötvös Loránd University
University College Dublin
South China Normal University
Rutherford Appleton Laboratory
University of Perugia
University of Valencia
University of Maryland, College Park
NASU - Kharkov Institute of Physics and Technology
University of Freiburg
National Centre for Nuclear Research
University of Pisa
RWTH Aachen University
Universidad Nacional de Colombia
University of Birmingham
University of Amsterdam
Scuola Normale Superiore di Pisa
Henan Normal University
Institution No. 8
Lanzhou University
University of Florence
University of Bergamo
Ruhr University Bochum
Universidad de Ingeniería y Tecnología
University of Siena
Vilnius University
University of Basilicata
Max Planck Institute for Nuclear Physics
University of Alcalá
University of Urbino

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Resumen

The first dedicated Z-boson mass measurement at the LHC with Z→μ+μ- decays is reported. The dataset uses proton-proton collisions at a center-of-mass energy of 13 TeV, recorded in 2016 by the LHCb experiment, and corresponds to an integrated luminosity of 1.7 fb-1. A template fit to the μ+μ- mass distribution yields the following result for the Z-boson mass: mZ=91,185.7±8.3±3.9 MeV, where the first uncertainty is statistical and the second systematic. This result is consistent with previous measurements and predictions from global electroweak fits.

Idioma original	Inglés
Número de artículo	161802
Publicación	Physical Review Letters
Volumen	135
N.º	16
DOI	https://doi.org/10.1103/ydn7-qx1d
Estado	Publicada - 17 oct 2025
Publicado de forma externa	Sí

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title = "Measurement of the Z -Boson Mass",

abstract = "The first dedicated Z-boson mass measurement at the LHC with Z→μ+μ- decays is reported. The dataset uses proton-proton collisions at a center-of-mass energy of 13 TeV, recorded in 2016 by the LHCb experiment, and corresponds to an integrated luminosity of 1.7 fb-1. A template fit to the μ+μ- mass distribution yields the following result for the Z-boson mass: mZ=91,185.7±8.3±3.9 MeV, where the first uncertainty is statistical and the second systematic. This result is consistent with previous measurements and predictions from global electroweak fits.",

author = "\{(LHCb Collaboration)\} and R. Aaij and Abdelmotteleb, \{A. S.W.\} and \{Abellan Beteta\}, C. and F. Abudin{\'e}n and T. Ackernley and Adefisoye, \{A. A.\} and B. Adeva and M. Adinolfi and P. Adlarson and C. Agapopoulou and Aidala, \{C. A.\} and Z. Ajaltouni and S. Akar and K. Akiba and P. Albicocco and J. Albrecht and F. Alessio and Z. Aliouche and \{Alvarez Cartelle\}, P. and R. Amalric and S. Amato and Amey, \{J. L.\} and Y. Amhis and L. An and L. Anderlini and M. Andersson and P. Andreola and M. Andreotti and A. Anelli and D. Ao and F. Archilli and Z. Areg and M. Argenton and \{Arguedas Cuendis\}, S. and A. Artamonov and M. Artuso and E. Aslanides and \{Ata{\'i}de Da Silva\}, R. and M. Atzeni and B. Audurier and D. Bacher and \{Bachiller Perea\}, I. and S. Bachmann and M. Bachmayer and Back, \{J. J.\} and \{Baladron Rodriguez\}, P. and V. Balagura and A. Balboni and W. Baldini and \{Calderon Ramirez\}, S.",

note = "Publisher Copyright: {\textcopyright} 2025 CERN. ",

year = "2025",

month = oct,

day = "17",

doi = "10.1103/ydn7-qx1d",

language = "Ingl{\'e}s",

volume = "135",

journal = "Physical Review Letters",

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T1 - Measurement of the Z -Boson Mass

AU - (LHCb Collaboration)

AU - Aaij, R.

AU - Abdelmotteleb, A. S.W.

AU - Abellan Beteta, C.

AU - Abudinén, F.

AU - Ackernley, T.

AU - Adefisoye, A. A.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adlarson, P.

AU - Agapopoulou, C.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Akiba, K.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Aliouche, Z.

AU - Alvarez Cartelle, P.

AU - Amalric, R.

AU - Amato, S.

AU - Amey, J. L.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andersson, M.

AU - Andreola, P.

AU - Andreotti, M.

AU - Anelli, A.

AU - Ao, D.

AU - Archilli, F.

AU - Areg, Z.

AU - Argenton, M.

AU - Arguedas Cuendis, S.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Ataíde Da Silva, R.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bacher, D.

AU - Bachiller Perea, I.

AU - Bachmann, S.

AU - Bachmayer, M.

AU - Back, J. J.

AU - Baladron Rodriguez, P.

AU - Balagura, V.

AU - Balboni, A.

AU - Baldini, W.

AU - Calderon Ramirez, S.

PY - 2025/10/17

Y1 - 2025/10/17

N2 - The first dedicated Z-boson mass measurement at the LHC with Z→μ+μ- decays is reported. The dataset uses proton-proton collisions at a center-of-mass energy of 13 TeV, recorded in 2016 by the LHCb experiment, and corresponds to an integrated luminosity of 1.7 fb-1. A template fit to the μ+μ- mass distribution yields the following result for the Z-boson mass: mZ=91,185.7±8.3±3.9 MeV, where the first uncertainty is statistical and the second systematic. This result is consistent with previous measurements and predictions from global electroweak fits.

AB - The first dedicated Z-boson mass measurement at the LHC with Z→μ+μ- decays is reported. The dataset uses proton-proton collisions at a center-of-mass energy of 13 TeV, recorded in 2016 by the LHCb experiment, and corresponds to an integrated luminosity of 1.7 fb-1. A template fit to the μ+μ- mass distribution yields the following result for the Z-boson mass: mZ=91,185.7±8.3±3.9 MeV, where the first uncertainty is statistical and the second systematic. This result is consistent with previous measurements and predictions from global electroweak fits.

UR - https://www.scopus.com/pages/publications/105020651847

U2 - 10.1103/ydn7-qx1d

DO - 10.1103/ydn7-qx1d

M3 - Artículo

C2 - 41172198

AN - SCOPUS:105020651847

SN - 0031-9007

VL - 135

JO - Physical Review Letters

JF - Physical Review Letters

IS - 16

M1 - 161802

ER -

Measurement of the Z -Boson Mass

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