Scientific article
Open access

Tevatron Run II combination of the effective leptonic electroweak mixing angle

ContributorsCDF Collaboration; D0 Collaboration
Published inPhysical Review. D, vol. 97, no. 11
  • Open Access - SCOAP3
Publication date2018

Drell-Yan lepton pairs produced in the process pp¯→ℓ+ℓ−+X through an intermediate γ*/Z boson have an asymmetry in their angular distribution related to the spontaneous symmetry breaking of the electroweak force and the associated mixing of its neutral gauge bosons. The CDF and D0 experiments have measured the effective-leptonic electroweak mixing parameter sin2θefflept using electron and muon pairs selected from the full Tevatron proton-antiproton data sets collected in 2001-2011, corresponding to 9–10 fb−1 of integrated luminosity. The combination of these measurements yields the most precise result from hadron colliders, sin2θefflept=0.23148±0.00033. This result is consistent with, and approaches in precision, the best measurements from electron-positron colliders. The standard model inference of the on-shell electroweak mixing parameter sin2θW, or equivalently the W-boson mass MW, using the zfitter software package yields sin2θW=0.22324±0.00033 or equivalently, MW=80.367±0.017 GeV/c2.

Citation (ISO format)
CDF Collaboration, D0 Collaboration. Tevatron Run II combination of the effective leptonic electroweak mixing angle. In: Physical Review. D, 2018, vol. 97, n° 11. doi: 10.1103/PhysRevD.97.112007
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Article (Published version)
ISSN of the journal0556-2821

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Creation07/05/2018 12:09:39 PM
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