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Article
Report number arXiv:2206.07110 ; CMS-SMP-18-014 ; CERN-EP-2022-088 ; CMS-SMP-18-014-003
Title Precision measurement of the Z boson invisible width in pp collisions at s = 13 TeV
Author(s) CMS Collaboration  ყველა 2352 ავტორის ჩვენება
Corporate Author(s) CMS Collaboration
Publication 2023-05-22
Imprint 2022-06-14
Number of pages 14
Note All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-18-014 (CMS Public Pages)
In: Phys. Lett. B 842 (2023) 137563
DOI 10.1016/j.physletb.2022.137563 (publication)
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords electroweak interaction
Abstract A precise measurement of the invisible width of the Z boson produced in proton-proton collisions at a center-of-mass energy of 13 TeV is presented using data recorded by the CMS experiment at the LHC, corresponding to an integrated luminosity of 36.3 fb1. The result is obtained from a simultaneous fit to kinematic distributions for two data samples of Z boson plus jets: one dominated by Z boson decays to invisible particles and the other by Z boson decays to muon and electron pairs. The invisible width is measured to be 523 ± 3 (stat) ± 16 (syst) MeV. This result is the first precise measurement of the invisible width of the Z boson at a hadron collider, and is the single most precise direct measurement to date, competitive with the combined result of the direct measurements from the LEP experiments.
Related document supersedes: CMS-PAS-SMP-18-014
Copyright/License publication: © 2022-2025 The Author(s) (License: CC BY 4.0), sponsored by SCOAP³
preprint: © 2022-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: cms-publication-committee-chair@cern.ch


 ჩანაწერი შექმნილია 2022-06-14, ბოლოს შესწორებულია 2024-12-27


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2206.07110 - სრული ტექსტის ჩამოტვირთვაPDF
d8ee8d323b9ab80b63f3837ca02ace0c - სრული ტექსტის ჩამოტვირთვაPDF
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