Measurement of the Z-Boson Mass

LHCb Collaboration

Research output: Contribution to JournalArticleAcademicpeer-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: m_{Z}=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
Pages (from-to)161802
Number of pages1
JournalPhysical review letters
Volume135
Issue number16
Early online date17 Oct 2025
DOIs
Publication statusPublished - 2025

Fingerprint

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

Cite this