Measurement of the Z -Boson Mass

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Aaij, R ORCID: 0000-0003-0533-1952, Abdelmotteleb, ASW ORCID: 0000-0001-7905-0542, Abellan Beteta, C ORCID: 0009-0009-0869-6798, Abudinén, F ORCID: 0000-0002-6737-3528, Ackernley, T ORCID: 0000-0002-5951-3498, Adefisoye, AA ORCID: 0000-0003-2448-1550, Adeva, B ORCID: 0000-0001-9756-3712, Adinolfi, M ORCID: 0000-0002-1326-1264, Adlarson, P ORCID: 0000-0001-6280-3851, Agapopoulou, C ORCID: 0000-0002-2368-0147 et al (show 90 more authors) , Aidala, CA ORCID: 0000-0001-9540-4988, Ajaltouni, Z, Akar, S ORCID: 0000-0003-0288-9694, Akiba, K ORCID: 0000-0002-6736-471X, Albicocco, P ORCID: 0000-0001-6430-1038, Albrecht, J ORCID: 0000-0001-8636-1621, Alessio, F ORCID: 0000-0001-5317-1098, Aliouche, Z ORCID: 0000-0003-0897-4160, Alvarez Cartelle, P ORCID: 0000-0003-1652-2834, Amalric, R ORCID: 0000-0003-4595-2729, Amato, S ORCID: 0000-0002-3277-0662, Amey, JL ORCID: 0000-0002-2597-3808, Amhis, Y ORCID: 0000-0003-4282-1512, An, L ORCID: 0000-0002-3274-5627, Anderlini, L ORCID: 0000-0001-6808-2418, Andersson, M ORCID: 0000-0003-3594-9163, Andreola, P ORCID: 0000-0002-3923-431X, Andreotti, M ORCID: 0000-0003-2918-1311, Anelli, A ORCID: 0000-0002-6191-934X, Ao, D ORCID: 0000-0003-1647-4238, Archilli, F ORCID: 0000-0002-1779-6813, Areg, Z ORCID: 0009-0001-8618-2305, Argenton, M ORCID: 0009-0006-3169-0077, Arguedas Cuendis, S ORCID: 0000-0003-4234-7005, Artamonov, A ORCID: 0000-0002-2785-2233, Artuso, M ORCID: 0000-0002-5991-7273, Aslanides, E ORCID: 0000-0003-3286-683X, Ataíde Da Silva, R ORCID: 0009-0005-1667-2666, Atzeni, M ORCID: 0000-0002-3208-3336, Audurier, B ORCID: 0000-0001-9090-4254, Bacher, D ORCID: 0000-0002-1249-367X, Bachiller Perea, I ORCID: 0000-0002-3721-4876, Bachmann, S ORCID: 0000-0002-1186-3894, Bachmayer, M ORCID: 0000-0001-5996-2747, Back, JJ ORCID: 0000-0001-7791-4490, Baladron Rodriguez, P ORCID: 0000-0003-4240-2094, Balagura, V ORCID: 0000-0002-1611-7188, Balboni, A ORCID: 0009-0003-8872-976X, Baldini, W ORCID: 0000-0001-7658-8777, Balzani, L ORCID: 0009-0006-5241-1452, Bao, H ORCID: 0009-0002-7027-021X, Baptista De Souza Leite, J ORCID: 0000-0002-4442-5372, Barbero Pretel, C ORCID: 0009-0001-1805-6219, Barbetti, M ORCID: 0000-0002-6704-6914, Barbosa, IR ORCID: 0000-0002-3226-8672, Barlow, RJ ORCID: 0000-0002-8295-8612, Barnyakov, M ORCID: 0009-0000-0102-0482, Barsuk, S ORCID: 0000-0002-0898-6551, Barter, W ORCID: 0000-0002-9264-4799, Bartz, J ORCID: 0000-0002-2646-4124, Bashir, S ORCID: 0000-0001-9861-8922, Batsukh, B ORCID: 0000-0003-1020-2549, Battista, PB ORCID: 0009-0005-5095-0439, Bay, A ORCID: 0000-0002-4862-9399, Beck, A ORCID: 0000-0003-4872-1213, Becker, M ORCID: 0000-0002-7972-8760, Bedeschi, F ORCID: 0000-0002-8315-2119, Bediaga, IB ORCID: 0000-0001-7806-5283, Behling, NA ORCID: 0000-0003-4750-7872, Belin, S ORCID: 0000-0001-7154-1304, Belous, K ORCID: 0000-0003-0014-2589, Belov, I ORCID: 0000-0003-1699-9202, Belyaev, I ORCID: 0000-0002-7458-7030, Benane, G ORCID: 0000-0002-8176-8315, Bencivenni, G ORCID: 0000-0002-5107-0610, Ben-Haim, E ORCID: 0000-0002-9510-8414, Berezhnoy, A ORCID: 0000-0002-4431-7582, Bernet, R ORCID: 0000-0002-4856-8063, Bernet Andres, S ORCID: 0000-0002-4515-7541, Bertolin, A ORCID: 0000-0003-1393-4315, Betancourt, C ORCID: 0000-0001-9886-7427, Betti, F ORCID: 0000-0002-2395-235X, Bex, J ORCID: 0000-0002-2856-8074, Bezshyiko, I ORCID: 0000-0002-4315-6414, Bezshyyko, O ORCID: 0000-0001-7106-5213, Bhom, J ORCID: 0000-0002-9709-903X, Bieker, MS ORCID: 0000-0001-7113-7862, Biesuz, NV ORCID: 0000-0003-3004-0946, Billoir, P ORCID: 0000-0001-5433-9876, Biolchini, A ORCID: 0000-0001-6064-9993, Birch, M ORCID: 0000-0001-9157-4461, Bishop, FCR ORCID: 0000-0002-0023-3897, Bitadze, A ORCID: 0000-0001-7979-1092, Bizzeti, A ORCID: 0000-0001-5729-5530, Blake, T ORCID: 0000-0002-0259-5891, Blanc, F ORCID: 0000-0001-5775-3132, Blank, JE ORCID: 0000-0002-6546-5605, Blusk, S ORCID: 0000-0001-9170-684X, Bocharnikov, V ORCID: 0000-0003-1048-7732 and Boelhauve, JA ORCID: 0000-0002-3543-9959 (2025) Measurement of the Z -Boson Mass Physical Review Letters, 135 (16). 161802-. ISSN 0031-9007, 1079-7114

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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.

Item Type:	Article
Uncontrolled Keywords:	LHCb Collaboration
Divisions:	Faculty of Humanities & Social Sciences Faculty of Science & Engineering Faculty of Science & Engineering > School of Engineering Faculty of Science & Engineering > School of Physical Sciences Faculty of Science & Engineering > School of Physical Sciences > Physics Faculty of Humanities & Social Sciences > School of the Arts Faculty of Humanities & Social Sciences > School of the Arts > Architecture Faculty of Science & Engineering > School of Engineering > Civil and Environmental Engineering
Depositing User:	Symplectic Admin
Date Deposited:	08 Dec 2025 16:54
Last Modified:	22 Jan 2026 08:49
DOI:	10.1103/ydn7-qx1d
Open Access URL:	https://journals.aps.org/prl/pdf/10.1103/ydn7-qx1d
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3195989
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