Measurement of the W → μν cross-sections as a function of the muon transverse momentum in pp collisions at 5.02 TeV



Aaij, R, Abdelmotteleb, ASW, Beteta, C Abellan, Abudinen, F, Ackernley, T, Adefisoye, AA, Adeva, B, Adinolfi, M, Adlarson, P, Agapopoulou, C
et al (show 1179 more authors) (2026) Measurement of the W → μν cross-sections as a function of the muon transverse momentum in pp collisions at 5.02 TeV JOURNAL OF HIGH ENERGY PHYSICS, 2026 (3). 148-. ISSN 1126-6708, 1029-8479

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Abstract

The pp → W<sup>±</sup>(→ μ<sup>±</sup>ν<inf>μ</inf>)X cross-sections are measured at a proton-proton centre-of-mass energy s=5.02 TeV using a dataset corresponding to an integrated luminosity of 100 pb<sup>−1</sup> recorded by the LHCb experiment. Considering muons in the pseudorapidity range 2.2 < η < 4.4, the cross-sections are measured differentially in twelve intervals of muon transverse momentum between 28 < p<inf>T</inf>< 52 GeV. Integrated over p<inf>T</inf>, the measured cross-sections are (Formula presented.) where the first uncertainties are statistical, the second are systematic, and the third are associated with the luminosity calibration. These integrated results are consistent with theoretical predictions. This analysis introduces a new method to determine the W-boson mass using the measured differential cross-sections corrected for detector effects. The measurement is performed on this statistically limited dataset as a proof of principle and yields (Formula presented.) where the first uncertainty is experimental and the second is theoretical.

Item Type: Article
Uncontrolled Keywords: Electroweak Interaction, Hadron-Hadron Scattering, Vector Boson Production
Divisions: Faculty of Humanities & Social Sciences
Faculty of Science & 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
Depositing User: Symplectic Admin
Date Deposited: 13 Apr 2026 08:59
Last Modified: 22 May 2026 16:55
DOI: 10.1007/JHEP03(2026)148
Open Access URL: https://link.springer.com/content/pdf/10.1007/JHEP...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3197868
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