Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at root s=7 TeV

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F24%3A00390183" target="_blank" >RIV/68407700:21220/24:00390183 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21240/24:00390183 RIV/68407700:21340/24:00390183 RIV/68407700:21670/24:00390183
Result on the web
<a href="https://doi.org/10.1140/epjc/s10052-024-13190-x" target="_blank" >https://doi.org/10.1140/epjc/s10052-024-13190-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epjc/s10052-024-13190-x" target="_blank" >10.1140/epjc/s10052-024-13190-x</a>

Result language
angličtina
Original language name
Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at root s=7 TeV
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics

Project
<a href="/en/project/EH22_008%2F0004632" target="_blank" >EH22_008/0004632: Fundamental constituents of matter through frontier technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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