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

ATLAS Collaboration; Paul Newman

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

ATLAS Collaboration, Paul Newman

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Proton-proton 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=80366.5 ± 9.8(stat.) ± 12.5(syst.) MeV = 80366.5 ± 15.9 MeV, and the width is measured as Γ_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 m_W is compatible with and supersedes the previous measurement performed using the same data.

Original language	English
Journal	European Physical Journal C
Publication status	Accepted/In press - 5 Aug 2024

Bibliographical note

Not yet published as of 10/09/2024.

Cite this

@article{861d658c6f6c4b1daefd7661065eb6fe,

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

abstract = "Proton-proton 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 mW=80366.5 ± 9.8(stat.) ± 12.5(syst.) MeV = 80366.5 ± 15.9 MeV, and the width is measured as ΓW=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.",

author = "{ATLAS Collaboration} and Paul Newman",

note = "Not yet published as of 10/09/2024.",

year = "2024",

month = aug,

day = "5",

language = "English",

journal = "European Physical Journal C",

issn = "1434-6044",

publisher = "Springer",

}

TY - JOUR

T1 - Measurement of the W-boson mass and width with the ATLAS detector using proton-proton collisions at √s = 7 TeV

AU - ATLAS Collaboration

AU - Newman, Paul

N1 - Not yet published as of 10/09/2024.

PY - 2024/8/5

Y1 - 2024/8/5

N2 - Proton-proton 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 mW=80366.5 ± 9.8(stat.) ± 12.5(syst.) MeV = 80366.5 ± 15.9 MeV, and the width is measured as ΓW=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.

AB - Proton-proton 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 mW=80366.5 ± 9.8(stat.) ± 12.5(syst.) MeV = 80366.5 ± 15.9 MeV, and the width is measured as ΓW=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.

UR - https://link.springer.com/journal/10052

M3 - Article

SN - 1434-6044

JO - European Physical Journal C

JF - European Physical Journal C

ER -