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Constraints on new physics in the electroweak sector are limited by the precision of direct measurements of the $W$ boson mass ($m_W$). A new measurement is hereby reported, using proton-proton collision data recorded by the LHCb experiment…

High Energy Physics - Experiment · Physics 2021-10-26 Ross Hunter

Measurements of electroweak boson production in pp collisions at $\sqrt{s} = 7$ TeV are presented using the decays $W \rightarrow \mu\nu$, $Z \rightarrow \mu\mu$ and $Z \rightarrow \tau\tau$ recorded using the LHCb detector at the LHC. For…

High Energy Physics - Experiment · Physics 2019-08-13 Jonathan Anderson

Pair-production and single-production of $W$ bosons provide many opportunities to look for new physics via precision measurements, for instance via scrutinising the involved triple-gauge vertices or by measuring CKM matrix elements in an…

High Energy Physics - Experiment · Physics 2024-10-23 Jenny List , Ulrich Einhaus , Andre Filipe Silva , Leonhard Reichenbach

The four-lepton ($4\ell$, $\ell = e, \mu$) production cross section is measured in the mass range from 80 to 1000 GeV using 20.3 fb$^{-1}$ of data in $pp$ collisions at $\sqrt{s}=8$ TeV collected with the ATLAS detector at the LHC. The…

High Energy Physics - Experiment · Physics 2016-01-14 ATLAS Collaboration

Previous studies of the physics potential of LEP2 indicated that with the design luminosity of 500 inverse picobarn one may get a direct measurement of the mass of the W-boson with a precision in the range 30 - 50 MeV. This report presents…

We present a study of the LHC sensitivity to the W boson mass based on simulation studies. We find that both experimental and phenomenological sources of systematic uncertainties can be strongly constrained with Z measurements: the…

High Energy Physics - Experiment · Physics 2019-08-13 N. Besson , M. Boonekamp , E. Klinkby , T. Petersen , S. Mehlhase

A search is presented for narrow diboson resonances decaying to $WW$ or $WZ$ in the final state where one $W$ boson decays leptonically (to an electron or a muon plus a neutrino) and the other $W/Z$ boson decays hadronically. The analysis…

High Energy Physics - Experiment · Physics 2015-08-26 ATLAS Collaboration

A study of the Standard Model (SM) three electroweak boson production, $WV\gamma$ where V = W or Z gauge boson, is presented concerning events with a leptonically decaying W boson accompanied by a photon and two or more jets. We are using…

High Energy Physics - Experiment · Physics 2019-08-14 Patricia Rebello Teles

A search for the leptonic decays of W bosons produced in the reaction e^+ p\to e^+ W^\pm X at a centre-of-mass energy of 300 GeV has been performed with the ZEUS detector at HERA using an integrated luminosity of 47.7 pb^-1 . Three events…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration

An updated study of measuring the W mass from a polarized threshold scan at ILC is presented with an emphasis on evaluating scan strategies that control experimental systematics. Highly longitudinally polarized beams of electrons and…

High Energy Physics - Experiment · Physics 2020-01-01 Graham W. Wilson

High-precision measurements by the ATLAS Collaboration are presented of inclusive $W^+\to\ell^+\nu$, $W^-\to\ell^-\bar{\nu}$ and $Z/\gamma^*\to\ell\ell$ ($\ell=e,\mu$) Drell-Yan production cross sections at the LHC. The data were collected…

High Energy Physics - Experiment · Physics 2017-06-09 ATLAS Collaboration

A measurement of the W boson mass and width has been performed by the DELPHI collaboration using the data collected during the full LEP2 programme (1996-2000). The data sample has an integrated luminosity of 660 pb^-1 and was collected over…

High Energy Physics - Experiment · Physics 2009-02-02 The DELPHI Collaboration , J. Abdallah

We have measured the W-boson mass MW using data corresponding to 2.2/fb of integrated luminosity collected in proton-antiproton collisions at 1.96 TeV with the CDF II detector at the Fermilab Tevatron collider. Samples consisting of 470126…

High Energy Physics - Experiment · Physics 2019-08-13 T. Aaltonen

A measurement of the ratio of the branching fractions, $R_{\tau/e} = B(W \to \tau \nu)/ B(W \to e \nu)$, is performed using a sample of $W$ bosons originating from top-quark decays to final states containing $\tau$-leptons or electrons.…

High Energy Physics - Experiment · Physics 2025-06-05 ATLAS Collaboration

After the recent discovery of a 125 GeV Higgs-like particle at the Large Hadron Collider (LHC), it is crucial to examine its role in unitarizing high energy W_LW_L scattering, which may reveal its possible deviation from a Standard Model…

High Energy Physics - Phenomenology · Physics 2014-03-03 Yanou Cui , Zhenyu Han

This Letter describes the search for an enhanced production rate of events with a charged lepton and a neutrino in high-energy pp collisions at the LHC. The analysis uses data collected with the CMS detector, with an integrated luminosity…

High Energy Physics - Experiment · Physics 2013-05-01 CMS Collaboration

We evaluate the measurement precision of the production cross section times the branching ratio of the Higgs boson decaying into tau lepton pairs at the International Linear Collider (ILC). We analyze various final states associated with…

High Energy Physics - Experiment · Physics 2016-01-27 Shin-ichi Kawada , Keisuke Fujii , Taikan Suehara , Tohru Takahashi , Tomohiko Tanabe

This letter reports a measurement of the muon charge asymmetry from $W$ bosons produced in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS experiment at the LHC. The asymmetry is measured in the $W \rightarrow…

High Energy Physics - Experiment · Physics 2019-01-16 The ATLAS Collaboration

The production cross sections of W$^\pm$W$^{\pm}$ and WZ boson pairs in association with two jets in proton-proton collisions are measured at $\sqrt{s}$ = 13.6 TeV. The data sample corresponds to an integrated luminosity of 171 fb$^{-1}$,…

High Energy Physics - Experiment · Physics 2026-05-18 CMS Collaboration

A search for the Higgs boson in H -> WW -> ll(l = e, mu) decays in ppbar collisions at a center-of-mass energy of sqrt{s}=1.96 TeV is presented. The data have been collected by the Run II DO detector between April 2002 and June 2008,…

High Energy Physics - Experiment · Physics 2008-10-22 Bjoern Penning