Measurement of the Z -Boson Mass

  • (LHCb Collaboration)

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number161802
JournalPhysical Review Letters
Volume135
Issue number16
DOIs
StatePublished - 17 Oct 2025
Externally publishedYes

Fingerprint

Dive into the research topics of 'Measurement of the Z -Boson Mass'. Together they form a unique fingerprint.

Cite this