Measurement of the W-boson mass in pp collisions at √s=7TeV with the ATLAS detector

Atlas Collaboration

Research output: Contribution to journalArticle

Abstract

A measurement of the mass of the W boson is presented based on proton–proton collision data recorded in 2011 at a centre-of-mass energy of 7 TeV with the ATLAS detector at the LHC, and corresponding to 4.6fb-1 of integrated luminosity. The selected data sample consists of 7.8 × 10 6 candidates in the W→ μν channel and 5.9 × 10 6 candidates in the W→ eν channel. The W-boson mass is obtained from template fits to the reconstructed distributions of the charged lepton transverse momentum and of the W boson transverse mass in the electron and muon decay channels, yielding (Formula presented.) where the first uncertainty is statistical, the second corresponds to the experimental systematic uncertainty, and the third to the physics-modelling systematic uncertainty. A measurement of the mass difference between the W+ and W- bosons yields mW+-mW-=-29±28 MeV.

Original languageEnglish (US)
Article number110
JournalEuropean Physical Journal C
Volume78
Issue number2
DOIs
StatePublished - Feb 1 2018

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Bosons
bosons
Detectors
collisions
detectors
transverse momentum
center of mass
leptons
muons
Luminance
Momentum
templates
Physics
luminosity
physics
Electrons
decay
Uncertainty
electrons
energy

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Measurement of the W-boson mass in pp collisions at √s=7TeV with the ATLAS detector. / Atlas Collaboration.

In: European Physical Journal C, Vol. 78, No. 2, 110, 01.02.2018.

Research output: Contribution to journalArticle

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