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

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. © 2018, CERN for the benefit of the ATLAS collaboration.

Details

Authors
Organisations
External organisations
  • Mohamed Premier University
  • Aix-Marseille University
  • University of Oklahoma
  • University of Texas
  • Institute of Physics Azerbaijan National Academy of Sciences
  • University of Paris-Sud
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number110
JournalEuropean Physical Journal C
Volume78
Issue number2
Publication statusPublished - 2018
Publication categoryResearch
Peer-reviewedYes

Bibliographic note

Export Date: 21 February 2018