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Type: Journal article
Title: Measurement of the W-boson mass in pp collisions at √s = 7 TeV with the ATLAS detector
Other Titles: Measurement of the W-boson mass in pp collisions at root s = 7 TeV with the ATLAS detector
Author: Aaboud, M.
Aad, G.
Abbott, B.
Abdallah, J.
Abdinov, O.
Abeloos, B.
Abidi, S.
AbouZeid, O.
Abraham, N.
Abramowicz, H.
Abreu, H.
Abreu, R.
Abulaiti, Y.
Acharya, B.
Adachi, S.
Adamczyk, L.
Adams, D.
Adelman, J.
Adersberger, M.
Adye, T.
et al.
Citation: European Physical Journal C, 2018; 78(2):110-1-110-61
Publisher: Springer
Issue Date: 2018
ISSN: 1434-6044
1434-6052
Statement of
Responsibility: 
M. Aaboud ... P. Jackson ... L. Lee ... A. Petridis ... M.J. White ... [et al.] (The ATLAS Collaboration)
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 4.6 fb⁻¹ of integrated luminosity. The selected data sample consists of 7.8×10⁶ candidates in the W→μν channel and 5.9×10⁶ 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: mW = 80370 = ± 7 (stat.) ± 11 (exp. syst.) ±14 (mod. syst.) MeV = 80370 ±19MeV, 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.
Rights: © CERN for the benefit of the ATLAS collaboration 2018. This article is an open access publication
RMID: 0030082797
DOI: 10.1140/epjc/s10052-017-5475-4
Appears in Collections:Physics publications

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