Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at √s=7 TeV
- NázevTitle
- Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at √s=7 TeVMeasurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at √s=7 TeV
- Druh výsledkuResult type
- Článek v časopiseJournal article
- AutořiAuthors
- G. Aad, E. Aakvaag, B. Abbott, S. Abdelhameed, B. Ali, K. Augsten, B. Bergmann, H. Day-Hall, P. Fiedler, Z. Hubáček, S. Mondal, M. Myška, L. Novotný, V. Petousis, S. Pospíšil, K. Smolek, A. Sopczak, V. Vacek, P. Vokáč, O. Zaplatílek
- DOIDOI
- 10.1140/epjc/s10052-024-13190-x
- Časopis / citaceJournal / citation
- European Physical Journal C. 2024, 84(12), ISSN 1434-6044.
- RokYear
- 2024
- JazykLanguage
- eng
- WoSWoS
- 001439557600001
- ScopusScopus
- 2-s2.0-105008498904
- RIVRIV
- RIV/68407700:21220/24:00390183!RIV26-MSM-21220___
- ProjektProject
- CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026)CERN-CZ III - Výzkumná infrastruktura pro experimenty v CERN - LM2023040 (2023–2026); Výzkum základních stavebních kamenů hmoty s využitím špičkových technologiíFundamental constituents of matter through frontier technologies; Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
AbstraktAbstract
Proton-proton collision data recorded by the ATLAS detector in 2011, at a centre-of-mass energy of 7 TeV, have been used for an improved determination of the W-boson mass and a first measurement of the W-boson width at the LHC. Recent fits to the proton parton distribution functions are incorporated in the measurement procedure and an improved statistical method is used to increase the measurement precision. The measurement of the W-boson mass yields a value of m(W) = 80,366.5 +/- 9.8 (stat.) +/- 12.5 (syst.) MeV = 80,366.5 +/- 15.9 MeV, and the width is measured as Gamma(W) = 2202 +/- 32 (stat.) +/- 34 (syst.) MeV = 2202 +/- 47 MeV. The first uncertainty components are statistical and the second correspond to the experimental and physics-modelling systematic uncertainties. Both results are consistent with the expectation from fits to electroweak precision data. The present measurement of mW is compatible with and supersedes the previous measurement performed using the same data.
Proton-proton collision data recorded by the ATLAS detector in 2011, at a centre-of-mass energy of 7 TeV, have been used for an improved determination of the W-boson mass and a first measurement of the W-boson width at the LHC. Recent fits to the proton parton distribution functions are incorporated in the measurement procedure and an improved statistical method is used to increase the measurement precision. The measurement of the W-boson mass yields a value of m(W) = 80,366.5 +/- 9.8 (stat.) +/- 12.5 (syst.) MeV = 80,366.5 +/- 15.9 MeV, and the width is measured as Gamma(W) = 2202 +/- 32 (stat.) +/- 34 (syst.) MeV = 2202 +/- 47 MeV. The first uncertainty components are statistical and the second correspond to the experimental and physics-modelling systematic uncertainties. Both results are consistent with the expectation from fits to electroweak precision data. The present measurement of mW is compatible with and supersedes the previous measurement performed using the same data.