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In 1997 each LEP experiment collected approximately 55 inv. pb of data at a center-of-mass energy of 183 GeV. These data yield a sample of candidate e+e- -> WW events from which the mass of the W boson, Mw, is measured. The LEP combined…

High Energy Physics - Experiment · Physics 2007-05-23 D. Glenzinski

We describe a measurement of the charge asymmetry of leptons from W boson decays in the rapidity range 0<|y_l|<2.5 using W --> enu, munu events from 110+/-7 pb^{-1}of data collected by the CDF detector during 1992-95. The asymmetry data…

High Energy Physics - Experiment · Physics 2010-05-12 F. Abe et. al , The CDF Collaboration

We study a lepton portal dark matter model, motivated by the deviation of the $W$ boson mass reported by the CDF collaboration. We introduce vector-like leptons and a scalar dark matter (DM) which exclusively couples to the extra leptons…

High Energy Physics - Phenomenology · Physics 2022-07-20 Junichiro Kawamura , Shohei Okawa , Yuji Omura

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

After the first observations of W bosons in leptonic interactions, about 4000 WW candidate events per experiment have been collected at LEP2. This data allows the measurement of the WW production cross section at different centre-of-mass…

High Energy Physics - Experiment · Physics 2014-11-17 M. Campanelli

We review the physics of purely leptonic decays of $\pi^\pm$, $K^\pm$, $D^{\pm}$, $D_s^\pm$, and $B^\pm$ pseudoscalar mesons. The measured decay rates are related to the product of the relevant weak-interaction-based CKM matrix element of…

High Energy Physics - Experiment · Physics 2010-04-22 Jonathan L. Rosner , Sheldon Stone

A crucial test of the Standard Model is the measurement of electroweak gauge-boson scattering. In this paper, we describe a generic parameterization aimed at a realistic simulation of weak-boson scattering at the LHC. The parameterization…

High Energy Physics - Phenomenology · Physics 2010-02-03 Ana Alboteanu , Wolfgang Kilian , Juergen Reuter

Electroweak precision observables, being highly sensitive to loop contributions of new physics, provide a powerful tool to test the theory and to discriminate between different models of the underlying physics. In that context, the $W$…

High Energy Physics - Phenomenology · Physics 2015-10-28 Oscar Stål , Georg Weiglein , Lisa Zeune

We investigate the associated production of charged Higgs bosons (H^\pm) and W bosons at the CERN Large Hadron Collider, using the leptonic decay H^+ -> tau^+ nu_tau and hadronic W decay, within different scenarios of the Minimal…

High Energy Physics - Phenomenology · Physics 2007-10-18 David Eriksson , Stefan Hesselbach , Johan Rathsman

We explore the possibility of explaining the $W$ boson mass with an extra gauge boson mixing with the $Z$ boson at tree level. Extra boson mixing with the $Z$ boson will change the expression of the $Z$ boson mass, thus altering the $W$…

High Energy Physics - Phenomenology · Physics 2023-03-15 Yu-Pan Zeng , Chengfeng Cai , Yu-Hang Su , Hong-Hao Zhang

We introduce a framework, based on an effective field theory approach, that allows one to perform characterisation studies of the boson recently discovered at the LHC, for all the relevant channels and in a consistent, systematic and…

High Energy Physics - Phenomenology · Physics 2015-06-16 P. Artoisenet , P. de Aquino , F. Demartin , R. Frederix , S. Frixione , F. Maltoni , M. K. Mandal , P. Mathews , K. Mawatari , V. Ravindran , S. Seth , P. Torrielli , M. Zaro

The TWIST Collaboration has completed its measurement of the three muon decay parameters \rho, \delta, and P_\mu\xi. This paper describes our determination of \rho, which governs the shape of the overall momentum spectrum, and \delta, which…

Most cosmic-ray air shower arrays have focused on detecting electromagnetic shower particles and low energy muons. A few groups (most notably MACRO + EASTOP and SPASE + AMANDA) have studied the high energy muon component of showers.…

Astrophysics · Physics 2008-11-26 Spencer R. Klein

We review the physics of purely leptonic decays of $\pi^\pm$, $K^\pm$, $D^{\pm}$, $D_s^\pm$, and $B^\pm$ pseudoscalar mesons. The measured decay rates are related to the product of the relevant weak-interaction-based CKM matrix element of…

High Energy Physics - Experiment · Physics 2013-09-13 Jonathan L. Rosner , Sheldon Stone

We present a selection of results from our recent study of $pp\to t\bar{t}W^\pm$ production matched to partons showers at NLO QCD at the LHC. Theoretical predictions are obtained at perturbative orders $\mathcal{O}(\alpha_s^3\alpha)$ and…

High Energy Physics - Phenomenology · Physics 2021-10-26 Manfred Kraus

The potential to discover a Standard-Model-like Higgs boson at the LHC in the mass range from 150-180 GeV, decaying into a pair of W bosons with subsequent leptonic decays, has been established during the last 10 years. Assuming that such a…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Davatz , M. Dittmar , F. Pauss

This note presents search for the Standard Model Higgs boson in $WW$, $\tau\tau$ and $\mu\mu$ decay channels with the proton-proton collision data collected by the CMS experiment at the LHC. The results have been derived using different…

High Energy Physics - Experiment · Physics 2017-10-13 Arun Kumar

This study searches for the kinematic selection criteria for estimation of measurable MPI fraction in p-p collisions at \sqrt{s} = 14 TeV. The process under study is the Monte-Carlo production of pair of W+ gauge bosons decaying…

High Energy Physics - Phenomenology · Physics 2012-06-21 Miroslav Myska

In 1997 each LEP experiment collected approximately $55 {pb}^{-1}$ of data at a center-of-mass energy of 183 GeV. These data yield a sample of candidate $e^+e^- \to W^+W^-$ events from which the mass of the W boson, M_W, is measured. The…

High Energy Physics - Experiment · Physics 2007-05-23 D. Glenzinski

The process $p+p\to W^\pm W^+ W^-$ with lepton decays of $W$-bosons is shown to be promising for improving conditions for studies of parameter $\lambda$, which is the anomalous triple $W$-bosons interaction coupling constant.

High Energy Physics - Phenomenology · Physics 2019-05-08 B. A. Arbuzov , I. V. Zaitsev
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