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Article
Report number arXiv:1806.00863 ; CMS-SMP-16-007 ; CERN-EP-2018-126 ; CMS-SMP-16-007-003
Title Measurement of the weak mixing angle using the forward-backward asymmetry of Drell-Yan events in pp collisions at 8 TeV
Author(s) CMS Collaboration  Visa alla 2293 författare
Publication 2018-09-01
Imprint 03 Jun 2018
Number of pages 41
Note Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-16-007 (CMS Public Pages)
In: Eur. Phys. J. C 78 (2018) 701
DOI 10.1140/epjc/s10052-018-6148-7 (publication)
Subject category Particle Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; CMS
Free keywords electroweak interaction
Abstract A measurement is presented of the effective leptonic weak mixing angle (sin2θeff) using the forward-backward asymmetry of Drell-Yan lepton pairs (μμ and ee) produced in proton-proton collisions at s= 8 TeV at the CMS experiment of the LHC. The data correspond to integrated luminosities of 18.8 and 19.6 fb1 in the dimuon and dielectron channels, respectively, containing 8.2 million dimuon and 4.9 million dielectron events. With more events and new analysis techniques, including constraints obtained on the parton distribution functions from the measured forward-backward asymmetry, the statistical and systematic uncertainties are significantly reduced relative to previous CMS measurements. The extracted value of sin2θeff from the combined dilepton data is sin2θeff= 0.23101 ± 0.00036 (stat) ± 0.00018 (syst) ± 0.00016 (theo) ± 0.00031 (parton distributions in proton) = 0.23101 ± 0.00053.
Related document supersedes: CMS-PAS-SMP-16-007
Copyright/License Preprint: © 2018-2025 CERN (License: CC-BY-4.0)



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


 Journalen skapades 2018-06-03, och modifierades senast 2024-12-27


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